Đề KT chất lượng đầu năm lớp 11D

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<b> NGUYEN THIEN THANH HIGH SCHOOL ENGLISH TEST OF THE BEGINNING </b>
<b> FOR THE GIFTED </b> <b> SCHOOL YEAR: 2015-2016, CLASS 11D</b>

ALLOTTED TIME 60 MINUTES

(There are 5 pages)

Full name: ______________________ , Class: 11D CODE
<i><b>Students write answers on the test</b></i>

<b>I. Supply each blank with the correct tense / form of the verb (1 M)</b>

A. You (1) (be) _________________ sure the answer (2) (be) _________ what it (3) (be)
____________? In my opinion, it isn’t right. Surely you (4) (forget) _____________ (5) (include)
_________ something essential?

B. While I ___________ (6) (wait) at the bus stop, I _________ (7) (see) my teacher go past in a
car.

C. Every summer we _____________ (8) (stay) at an apartment that _____ (9) (belong) to my uncle.
D. My brother told me that our goldfish __________ (10) (die).

<b>II. Supply the correct form of the words in brackets: (1 M)</b>

1. People think I am ____________ when in fact I have trouble communicating in English. (social)
2. A few of the students displayed an ___________ attitude toward the cheating student. (differ)
3. Whenever he lost ____________for his current job, he'd nose around within the company for
something new. (enthuse)

4. " I can't wait to see her on the first day," he went on ____________. (cheer)

5. Being recognized in the street is part and parcel of being a ______________ . (celebrate)
<b>III. Choose the best answer: (3 Ms)</b>

1. This sort of thing doesn’t happen in Nigeria, _____ ?

A. isn’t it B. does it C. doesn’t it D. can’t it
2. Einstein gradually became _____ in the discussion.

A. absorbent B. absorbing C. to absorb D. absorbed
3. Whenever we meet, we stop ________.

A. talking B. for talking C. to talk D. to talking
4. Our teacher didn’t _____ the joke I told so I had to explain it to her.

A. find B. take C. have D. get

5. Are your plans for this weekend still ______

A. the same B. identical C. same D. like

6. He _____ for the national team in 65 matches so far.

A. is playing B. has been playing C. played D. has played
7. There is one television programme which is above all ______ in popularity.

A. others B. other C. the other D. another

8. These are my ________ three children.

A. Tim’s brother- B. brother Tim C. brother Tim’s D. brother is Tim

9. The room was _____ small to accommodate the Council.

A. as B. too C. much D. as much

10. We ______ some research into the state of the Swedish car industry

A. did B. conducted C. undertook D. All are correct

11. I don’t think it’s nice to make fun _____ kids who are younger than you.

A. of B. to C. at D. with

12. Even if the railways had no competition, Parliament would see that their charges were fair and
______

A. reason B. reasonably C. reasonable D. reasonless
13. American children learn Lincoln’s Gettysburg speech __________

A. by heart B. in heart C. with heart D. to heart
14. I never feel sure what ______ by the word ‘democratic’.

A. means B. is meant C. is the meaning D. to mean

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15. “Do you think we’re all created equal?” — “No, not ______ all.”

A. in B. over C. to D. at

16. My _____ house is not very far away.

A. father-in law’s B. father-in-law C. fathers’-in-laws’ D. fathers’-in-law

17. People who make pigs of _____ by overeating should be made to go on a diet.

A. himself B. them C. themselves D. ourselves

18. I’m going to try to get _______ shape before the summer holidays.

A. off B. in C. over D. on

19. The building _____ the earthquake but then _____ by a fire.

A. was survived — destroyed B. was survived — was destroyed
C. survived — destroyed D. survived — was destroyed
20. We shall have to stop soon because the car is almost _____ petrol.

A. out off B. not having C. out of D. lacking

21. At one o’clock Mr. Taylor will close his shop and go out to have _______.

A. lunch B. the lunch C. a lunch D. lunches

22. Now the shares Mr. Brown bought in 1967 have gone up _______ value.

A. by B. on C. at D. in

23. The reason why we didn’t see her at the railway station was that she took a plane _________

A. besides B. instead C. sometimes D. soon

24. There is nothing very _____ to do in that small town.

A. enjoy B. enjoyed C. enjoyable D. enjoying

25. The doctor gave me a _____ for some medicine for my throat.

A. prescription B. diagnosis C. recipe D. cure
26. I’m really disappointed. I _____ for the team again.

A. didn’t pick B. wasn’t picked C. didn’t get to be picked D. wasn’t got picked
27. I can’t find my purse anywhere; I _____ it at the cinema.

A. must have been B. must leave C. must be leaving D. must have left
28. My sister’s tooth still gives her some pain. She _____ gone to the dentist yesterday.

A. should have B. would have C. must have D. could be

29. My friend was going to call me as soon as he arrived this morning but he didn’t call. He _____ the
train.

A. had to miss B. should have missed C. must have missed D. would have missed
30. Flight nineteen from New York and Washington is now arriving at _________

A. gate two B. the gate two C. the two gate D. second gate
<b>IV. Reading:</b>

<b>A. Read the following passage and decide which answer (A, B, C, or D) best fits each gap. (1 M)</b>
A lot of people like to play their records as loudly as possible. The (1) _______ is that the rest of
the family and the neighbours often complain (2) _______ they don’t like the music. One (3) _______
to this problem is to wear headphones, but headphones are usually uncomfortable.’ An armchair which
has a record-player system built into it has just been (4) _______ by a British engineer, Stephen Court.

The armchair looks like an ordinary armchair with a high back. However, each of the two sides of
the chair has three loudspeakers inside to reproduce middle and high sounds. Low sounds are
reproduced by a pair of loudspeakers in a hollow (5) _______ under the seat. Anyone who sits in the
chair hears sounds coming from all around his/her head.

Because we cannot tell the exact (6) ________ from which low sounds come, it doesn’t (7)
_______ that they come from underneath or behind. It is the higher sounds coming from the sides of
the chair that create a stereo effect.

These sounds travel only a few inches to reach the listener’s ears. (8) _______, it takes only a little
power to make the music sound very loud. Only a small amount of sound leaks out from behind the
chair into the room to (9) _______ others. Most of the sound is (10) _______ by the listener.

1. A. conclusion B. impact C. sequence D. result

2. A. if B. for C. lest D. since

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4. A. drawn B. discovered C. imagined D. designed

5. A. hole B. set C. location D. space

6. A. destination B. reason C. source D. departure

7. A. matter B. care C. make sense D. mean

8. A. Surprisingly B. Strangely C. Consequently D. Eventually

9. A disappoint B. dismiss C. deter D. disturb

10. A. integrated B. absorbed C. admitted D. accommodated

<b>B. Read the passage and choose the best answer (A, B, C or D) to the questions. (1 M)</b>

The ecosystems of the Earth provide an array of free public services that are essential for the
support of civilizations. They maintain the quality of the atmosphere, provide food from the sea,
manufacture and replenish soils, recycle wastes and nutrients, control the overwhelming majority of
crop pests and disease vectors, and so on. People have no idea how to take over these activities
satisfactorily. They do know, however, that the theory once advanced in the 19th century - that the
productivity of the land can be infinitely increased by the application of capital, labour, and science - is
wrong. History has shown that once the natural life - support systems of a civilization have been
sufficiently damaged, they cannot usually be replaced. The ancient deforestation and overgrazing of
the Mediterranean region is a famous example. And today, a global civilization is ruining the global
environment.

1. What is the main topic of this passage?

A. Free public services B. Support needed for civilizations
C The value of ecosystems D. The vastness of the Earth
2. The word they refers to _______.

A. ecosystems B. civilizations

C. sea D. people

3. The author mentions the Mediterranean region as an example of _______
A. the ability of nature to remedy human destruction

B. the ability of people to make use of natural-resources
C. the manner in which people replenish the environment
D. the effects of human abuse of natural resources

4. The author suggests that civilizations can survive only if they _______.
A. greatly expand scientific research

B. do not destroy the balance of natural processes
C. replant the forests in the Mediterranean region

D. invent new procedures to replace obsolete ecosystems

5. The author suggests that the difference between the ancient and the modern situation is that today
the problem is _______.

A. worldwide B. better understood

C. more manageable D. economic

<b>C. Read the passage and choose the best answers (A, B, C or D) to the questions. (1 M)</b>
<b>GREEN ICEBERGS</b>

Icebergs are massive blocks of ice, irregular in shape; they float with only about 12 percent of their
mass above the sea surface. They are formed by glaciers - large rivers of ice that begin inland in the
snows of Greenland, Antarctica, and Alaska - and move slowly toward the sea. The forward
movement, the melting at the base of the glacier where it meets the ocean, and waves and tidal action
cause blocks of ice to break off and float out to sea.

Icebergs are ordinarily blue to white, although they sometimes appear dark or opaque because they
carry gravel and bits of rock. They may change color with changing light conditions and cloud cover,
glowing pink or gold in the morning or evening light, but this color change is generally related to the
low angle of the Sun above the horizon. However, travelers to Antarctica have repeatedly reported
seeing green icebergs in the Weddell Sea and, more commonly, close to the Amery Ice Shelf in East
Antarctica.

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optical illusion when blue ice is illuminated by a near-horizon red Sun, but green icebergs stand out
among white and blue icebergs under a great variety of light conditions. Another suggestion is that the
color might be related to ice with high levels of metallic compounds, including copper and iron.
Recent expeditions have taken ice samples from green icebergs and ice cores - vertical, cylindrical ice
samples reaching down to great depths - from the glacial ice shelves along the Antarctic continent.
Analyses of these cores and samples provide a different solution to the problem.

The ice shelf cores, with a total length of 215 meters (705 feet), were long enough to penetrate
through glacial ice - which is formed from the compaction of snow and contains air bubbles - and to
continue into the clear, bubble-free ice formed from seawater that freezes onto the bottom of the
glacial ice. The properties of this clear sea ice were very similar to the ice from the green iceberg. The
scientists concluded that green icebergs form when a two-layer block of shelf ice breaks away and
capsizes (turns upside down), exposing the bubble-free shelf ice that was formed from seawater.

A green iceberg that stranded just west of the Amery Ice Shelf showed two distinct layers: bubbly
blue-white ice and bubble-free green ice separated by a one-meter-long ice layer containing sediments.
The green ice portion was textured by seawater erosion. Where cracks were present, the color was light
green because of light scattering; where no cracks were present, the color was dark green. No air
bubbles were present in the green ice, suggesting that the ice was not formed from the compression of
snow but instead from the freezing of seawater. Large concentrations of single-celled organisms with
green pigments (coloring substances) occur along the edges of the ice shelves in this region, and the
seawater is rich in their decomposing organic material. The green iceberg did not contain large
amounts of particles from these organisms, but the ice had accumulated dissolved organic matter from
the seawater. It appears that unlike salt, dissolved organic substances are not excluded from the ice in
the freezing process. Analysis shows that the dissolved organic material absorbs enough blue
wavelengths from solar light to make the ice appear green.

Chemical evidence shows that platelets (minute flat portions) of ice form in the water and then
<b>accrete and stick to the bottom of the ice shelf to form a slush (partially melted snow). The slush is</b>

compacted by an unknown mechanism, and solid, bubble free ice is formed from water high in soluble
organic substances. When an iceberg separates from the ice shelf and capsizes, the green ice is
exposed.

The Amery Ice Shelf appears to be uniquely suited to the production of green icebergs. Once
detached from the ice shelf, these bergs drift in the currents and wind systems surrounding Antarctica
and can be found scattered among Antarctica’s less colorful icebergs.

1. According to paragraph 1, all of the following are true of icebergs EXCEPT:
A. They do not have a regular shape.

B. They are formed where glaciers meet the ocean.
C. Most of their mass is above the sea surface.
D. Waves and tides cause them to break off glaciers.

2. According to paragraph 2, what causes icebergs to sometimes appear dark or opaque?
A. A heavy cloud cover

B. The presence of gravel or bits of rock
C. The low angle of the Sun above the horizon
D. The presence of large cracks in their surface

3. The word penetrate in the passage is closest in meaning to

A. collect B. pierce C. melt D. endure

4. According to paragraph 4, how is glacial ice formed?
A. By the compaction of snow

B. By the freezing of seawater on the bottom of ice shelves

C. By breaking away from the ice shelf

D. By the capsizing of a two-layer block of shelf ice

5. According to paragraph 4, ice shelf cores helped scientists explain the formation of green icebergs
by showing that

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C. glacial ice is lighter and floats better than sea ice

D. the clear sea ice at the bottom of the ice shelf is similar to ice from a green iceberg ‘

6. Why does the author mention that “The green ice portion was textured by seawater erosion’’?
A. To explain why cracks in the iceberg appeared light green instead of dark green

B. To suggest that green ice is more easily eroded by seawater than white ice is
C. To support the idea that the green ice had been the bottom layer before capsizing
D. To explain how the air bubbles had been removed from the green ice

7. The word accumulated in the passage is closest in meaning to

A. collected B. frozen C. released D. covered

8. The word accrete in the passage is closest in meaning to

A. advance B transfer C. flatten out D. come together

9. Which of the following is NOT explained in the passage?
A. Why blocks of ice break off where glaciers meet the ocean
B. Why blocks of shelf ice sometimes capsize after breaking off

C. Why green icebergs are commonly produced in some parts of Antarctica
D. Why green icebergs contain large amounts of dissolved organic pigments

10. The passage supports which of the following statements about the Amery Ice Shelf?
A. The Amery Ice Shelf produces only green icebergs.

B. The Amery Ice Shelf produces green icebergs because its ice contains high levels of metallic
compounds such as copper and iron.

C. The Amery Ice Shelf produces green icebergs because the seawater is rich in a particular kind
of soluble organic material.

D. No green icebergs are found far from the Amery Ice Shelf.
<b>V. Rewrite the following sentences as directed: (2 Ms)</b>

1. You had better get down to your studies now.

→ It’s high time _____________________________________________________________
2. Your school results depend on how hard you work.

→ The harder _______________________________________________________________
3. They delay the trip because of a storm.

→ But ____________________________________________________________________
4. Be more active or you will get ill and bored.

→ Unless __________________________________________________________________
5. The form teacher got angry when his students made noise. ROOF

→ The form teacher __________________________________________________________

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<b> NGUYEN THIEN THANH HIGH SCHOOL ENGLISH TEST OF THE BEGINNING </b>
<b> FOR THE GIFTED </b> <b> SCHOOL YEAR: 2015-2016, CLASS 11D</b>

ALLOTTED TIME 60 MINUTES

(There are 5 pages)

Full name: ______________________ , Class: 11D CODE
<i><b>Students write answers on the test</b></i>

<b>I. Supply each blank with the correct tense / form of the verb (1 M)</b>

A. You (1) (be) _________ sure the answer (2) (be) _________ what it (3) (be) _________? In my
opinion, it isn’t right. Surely you (4) (forget) _____________ (5) (include) _________ something
essential?

B. While I ___________ (6) (wait) at the bus stop, I _________ (7) (see) my teacher go past in a
car.

C. Every summer we _____________ (8) (stay) at an apartment that _____ (9) (belong) to my uncle.
D. My brother told me that our goldfish __________ (10) (die).

Key:

1. Are you 2. is 3. should be 4. Have you forgotten 5. to include
6. was waiting 7. saw 8. stayed 9. belonged 10. had died

<b>II. Supply the correct form of the words in brackets: (1 M)</b>

1. People think I am ____________ when in fact I have trouble communicating in English. (social)
2. A few of the students displayed an ___________ attitude toward the cheating student. (differ)
3. Whenever he lost ____________for his current job, he'd nose around within the company for
something new. (enthuse)

4. " I can't wait to see her on the first day," he went on ____________. (cheer)

5. Being recognized in the street is part and parcel of being a ______________ . (celebrate)
Key:

1. unsociable 2. indifferent 3. enthusiasm 4. cheerfully 5. celebrity
<b>III. Choose the best answer: (3 Ms)</b>

1. This sort of thing doesn’t happen in Nigeria, _____ ?

A. isn’t it B. does it C. doesn’t it D. can’t it
2. Einstein gradually became _____ in the discussion.

A. absorbent B. absorbing C. to absorb D. absorbed
3. Whenever we meet, we stop ________.

A. talking B. for talking C. to talk D. to talking
4. Our teacher didn’t _____ the joke I told so I had to explain it to her.

A. find B. take C. have D. get

5. Are your plans for this weekend still ______

A. the same B. identical C. same D. like

6. He _____ for the national team in 65 matches so far.

A. is playing B. has been playing C. played D. has played
7. There is one television programme which is above all ______ in popularity.

A. others B. other C. the other D. another

8. These are my ________ three children.

A. Tim’s brother- B. brother Tim C. brother Tim’s D. brother is Tim
9. The room was _____ small to accommodate the Council.

A. as B. too C. much D. as much

10. We ______ some research into the state of the Swedish car industry

A. did B. conducted C. undertook D. All are correct

11. I don’t think it’s nice to make fun _____ kids who are younger than you.

A. of B. to C. at D. with

12. Even if the railways had no competition, Parliament would see that their charges were fair and
______

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A. reason B. reasonably C. reasonable D. reasonless
13. American children learn Lincoln’s Gettysburg speech __________

A. by heart B. in heart C. with heart D. to heart
14. I never feel sure what ______ by the word ‘democratic’.

A. means B. is meant C. is the meaning D. to mean
15. “Do you think we’re all created equal?” — “No, not ______ all.”

A. in B. over C. to D. at

16. My _____ house is not very far away.

A. father-in law’s B. father-in-law C. fathers’-in-laws’ D. fathers’-in-law
17. People who make pigs of _____ by overeating should be made to go on a diet.

A. himself B. them C. themselves D. ourselves

18. I’m going to try to get _______ shape before the summer holidays.

A. off B. in C. over D. on

19. The building _____ the earthquake but then _____ by a fire.

A. was survived — destroyed B. was survived — was destroyed
C. survived — destroyed D. survived — was destroyed
20. We shall have to stop soon because the car is almost _____ petrol.

A. out off B. not having C. out of D. lacking

21. At one o’clock Mr. Taylor will close his shop and go out to have _______.

A. lunch B. the lunch C. a lunch D. lunches

22. Now the shares Mr. Brown bought in 1967 have gone up _______ value.

A. by B. on C. at D. in

23. The reason why we didn’t see her at the railway station was that she took a plane _________

A. besides B. instead C. sometimes D. soon

24. There is nothing very _____ to do in that small town.

A. enjoy B. enjoyed C. enjoyable D. enjoying

25. The doctor gave me a _____ for some medicine for my throat.

A. prescription B. diagnosis C. recipe D. cure
26. I’m really disappointed. I _____ for the team again.

A. didn’t pick B. wasn’t picked C. didn’t get to be picked D. wasn’t got picked
27. I can’t find my purse anywhere; I _____ it at the cinema.

A. must have been left B. must leave C. must be leaving D. must have left
28. My sister’s tooth still gives her some pain. She _____ gone to the dentist yesterday.

A. should have B. would have C. must have D. could be

29. My friend was going to call me as soon as he arrived this morning but he didn’t call. He _____ the
train.

A. had to miss B. should have missed C. must have missed D. would have missed
30. Flight nineteen from New York and Washington is now arriving at _________

A. gate two B. the gate two C. the two gate D. second gate
<b>IV. Reading:</b>

<b>A. Read the following passage and decide which answer (A, B, C, or D) best fits each gap. (1 M)</b>
A lot of people like to play their records as loudly as possible. The (1) _______ is that the rest of
the family and the neighbours often complain (2) _______ they don’t like the music. One (3) _______
to this problem is to wear headphones, but headphones are usually uncomfortable.’ An armchair which
has a record-player system built into it has just been (4) _______ by a British engineer, Stephen Court.

The armchair looks like an ordinary armchair with a high back. However, each of the two sides of
the chair has three loudspeakers inside to reproduce middle and high sounds. Low sounds are
reproduced by a pair of loudspeakers in a hollow (5) _______ under the seat. Anyone who sits in the
chair hears sounds coming from all around his/her head.

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These sounds travel only a few inches to reach the listener’s ears. (8) _______, it takes only a little
power to make the music sound very loud. Only a small amount of sound leaks out from behind the
chair into the room to (9) _______ others. Most of the sound is (10) _______ by the listener.

1. A. conclusion B. impact C. sequence D. result

2. A. if B. for C. lest D. since

3. A way B. answer C. conclusion D. settlement

4. A. drawn B. discovered C. imagined D. designed

5. A. hole B. set C. location D. space

6. A. destination B. reason C. source D. departure

7. A. matter B. care C. make sense D. mean

8. A. Surprisingly B. Strangely C. Consequently D. Eventually

9. A disappoint B. dismiss C. deter D. disturb

10. A. integrated B. absorbed C. admitted D. accommodated

<b>Key: 1D 2A</b> 3B 4. D 5. D 6C 7A 8C 9D 10B

<b>B. Read the passage and choose the best answer (A, B, C or D) to the questions. (1 M)</b>

The ecosystems of the Earth provide an array of free public services that are essential for the
support of civilizations. They maintain the quality of the atmosphere, provide food from the sea,
manufacture and replenish soils, recycle wastes and nutrients, control the overwhelming majority of
crop pests and disease vectors, and so on. People have no idea how to take over these activities
satisfactorily. They do know, however, that the theory once advanced in the 19th century - that the
productivity of the land can be infinitely increased by the application of capital, labour, and science - is
wrong. History has shown that once the natural life - support systems of a civilization have been
sufficiently damaged, they cannot usually be replaced. The ancient deforestation and overgrazing of
the Mediterranean region is a famous example. And today, a global civilization is ruining the global
environment.

1. What is the main topic of this passage?

A. Free public services B. Support needed for civilizations
C The value of ecosystems D. The vastness of the Earth
2. The word they refers to _______.

A. ecosystems B. civilizations

C. sea D. people

3. The author mentions the Mediterranean region as an example of _______
A. the ability of nature to remedy human destruction

B. the ability of people to make use of natural-resources
C. the manner in which people replenish the environment
D. the effects of human abuse of natural resources

4. The author suggests that civilizations can survive only if they _______.
A. greatly expand scientific research

B. do not destroy the balance of natural processes
C. replant the forests in the Mediterranean region

D. invent new procedures to replace obsolete ecosystems

5. The author suggests that the difference between the ancient and the modern situation is that today
the problem is _______.

A. worldwide B. better understood

C. more manageable D. economic

Key: 1C 2A 3D 4B 5A

<b>C. Read the passage and choose the best answers (A, B, C or D) to the questions. (1 M)</b>
<b>GREEN ICEBERGS</b>

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Icebergs are ordinarily blue to white, although they sometimes appear dark or opaque because they
carry gravel and bits of rock. They may change color with changing light conditions and cloud cover,
glowing pink or gold in the morning or evening light, but this color change is generally related to the
low angle of the Sun above the horizon. However, travelers to Antarctica have repeatedly reported
seeing green icebergs in the Weddell Sea and, more commonly, close to the Amery Ice Shelf in East
Antarctica.

Scientists have differed as to whether icebergs appear green as a result of light conditions or
because of something in the ice itself. One explanation for green icebergs attributes their color to an
optical illusion when blue ice is illuminated by a near-horizon red Sun, but green icebergs stand out
among white and blue icebergs under a great variety of light conditions. Another suggestion is that the
color might be related to ice with high levels of metallic compounds, including copper and iron.
Recent expeditions have taken ice samples from green icebergs and ice cores - vertical, cylindrical ice
samples reaching down to great depths - from the glacial ice shelves along the Antarctic continent.
Analyses of these cores and samples provide a different solution to the problem.

The ice shelf cores, with a total length of 215 meters (705 feet), were long enough to penetrate
through glacial ice - which is formed from the compaction of snow and contains air bubbles - and to
continue into the clear, bubble-free ice formed from seawater that freezes onto the bottom of the
glacial ice. The properties of this clear sea ice were very similar to the ice from the green iceberg. The
scientists concluded that green icebergs form when a two-layer block of shelf ice breaks away and
capsizes (turns upside down), exposing the bubble-free shelf ice that was formed from seawater.

A green iceberg that stranded just west of the Amery Ice Shelf showed two distinct layers: bubbly
blue-white ice and bubble-free green ice separated by a one-meter-long ice layer containing sediments.
The green ice portion was textured by seawater erosion. Where cracks were present, the color was light
green because of light scattering; where no cracks were present, the color was dark green. No air
bubbles were present in the green ice, suggesting that the ice was not formed from the compression of
snow but instead from the freezing of seawater. Large concentrations of single-celled organisms with
green pigments (coloring substances) occur along the edges of the ice shelves in this region, and the

seawater is rich in their decomposing organic material. The green iceberg did not contain large
amounts of particles from these organisms, but the ice had accumulated dissolved organic matter from
the seawater. It appears that unlike salt, dissolved organic substances are not excluded from the ice in
the freezing process. Analysis shows that the dissolved organic material absorbs enough blue
wavelengths from solar light to make the ice appear green.

Chemical evidence shows that platelets (minute flat portions) of ice form in the water and then
<b>accrete and stick to the bottom of the ice shelf to form a slush (partially melted snow). The slush is</b>
compacted by an unknown mechanism, and solid, bubble free ice is formed from water high in soluble
organic substances. When an iceberg separates from the ice shelf and capsizes, the green ice is
exposed.

The Amery Ice Shelf appears to be uniquely suited to the production of green icebergs. Once
detached from the ice shelf, these bergs drift in the currents and wind systems surrounding Antarctica
and can be found scattered among Antarctica’s less colorful icebergs.

The Amery Ice Shelf appears to be uniquely suited to the production of green icebergs. Once
detached from the ice shelf, these bergs drift in the currents and wind systems surrounding Antarctica
and can be found scattered among Antarctica’s less colorful icebergs.

1. According to paragraph 1, all of the following are true of icebergs EXCEPT:
A. They do not have a regular shape.

B. They are formed where glaciers meet the ocean.
C. Most of their mass is above the sea surface.
D. Waves and tides cause them to break off glaciers.

2. According to paragraph 2, what causes icebergs to sometimes appear dark or opaque?
A. A heavy cloud cover

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3. The word penetrate in the passage is closest in meaning to

A. collect B. pierce C. melt D. endure

4. According to paragraph 4, how is glacial ice formed?
A. By the compaction of snow

B. By the freezing of seawater on the bottom of ice shelves
C. By breaking away from the ice shelf

D. By the capsizing of a two-layer block of shelf ice

5. According to paragraph 4, ice shelf cores helped scientists explain the formation of green icebergs
by showing that

A. the ice at the bottom of green icebergs is bubble-free ice formed from frozen seawater
B. bubble-free ice is found at the top of the ice shelf

C. glacial ice is lighter and floats better than sea ice

D. the clear sea ice at the bottom of the ice shelf is similar to ice from a green iceberg ‘

6. Why does the author mention that “The green ice portion was textured by seawater erosion’’?
A. To explain why cracks in the iceberg appeared light green instead of dark green

B. To suggest that green ice is more easily eroded by seawater than white ice is
C. To support the idea that the green ice had been the bottom layer before capsizing
D. To explain how the air bubbles had been removed from the green ice

7. The word accumulated in the passage is closest in meaning to

A. collected B. frozen C. released D. covered

8. The word accrete in the passage is closest in meaning to

A. advance B transfer C. flatten out D. come together

9. Which of the following is NOT explained in the passage?
A. Why blocks of ice break off where glaciers meet the ocean
B. Why blocks of shelf ice sometimes capsize after breaking off

C. Why green icebergs are commonly produced in some parts of Antarctica
D. Why green icebergs contain large amounts of dissolved organic pigments

10. The passage supports which of the following statements about the Amery Ice Shelf?
A. The Amery Ice Shelf produces only green icebergs.

B. The Amery Ice Shelf produces green icebergs because its ice contains high levels of metallic
compounds such as copper and iron.

C. The Amery Ice Shelf produces green icebergs because the seawater is rich in a particular kind
of soluble organic material.

D. No green icebergs are found far from the Amery Ice Shelf.

Key: 1C 2B 3B 4A 5D 6C 7A 8D 9B 10C

<b>V. Rewrite the following sentences as directed: (2 Ms)</b>
1. You had better get down to your studies now.

→ It’s high time _____________________________________________________________
2. Your school results depend on how hard you work.

→ The harder _______________________________________________________________
3. They delay the trip because of a storm.

→ But ____________________________________________________________________
4. Be more active or you will get ill and bored.

→ Unless __________________________________________________________________
5. The form teacher got angry when his students made noise. ROOF

→ The form teacher __________________________________________________________
<b>Key:</b>

1. It’s high time you got down to your studies.

2. The harder you work the better your school results become.
3. But for the storm, they wouldn’t delay the trip.

4. Unless you are more active, you will get ill and bored.
5. The form teacher hit the roof when his students made noise.

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