practice for unit 15 e11

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<b>EXERCISES FOR UNIT 15</b>

<b>I. Circle the word whose underlined part is pronounced differently from that of the other words.</b>

1) A. appoint B. aspiration C. astronaut D. caption

2) A. cosmonaut B. orbit C. astronaut D. biography

3) A. venture B. pressure C. congress D. tragic

4) A. certainty B. biography C. psychological D. gravity

5) A. reminder B. orbit C. mission D. feat

<b>II. Circle the word that has stress pattern different from that of the other words.</b>

1) A. venture B. shuttle C. gravity D. appoint

2) A. artificial B. satisfaction C. pioneer D. extreme

3) A. breakthrough B. challenge C. conquest D. impossible

4) A. human B. national C. desire D. spacecraft

5) A. beautiful B. attention C. scientist D. cosmonaut

<b>III. Give the correct form of the given words to complete the following sentences.</b>
1) Gagarin’s flight into space was a (history) event.

2) When being in a spacecraft, astronauts eat and drink in (weigh).

3) In the recent time there have been more and more (psychology) diseases.
4) His (fail) in running his business made him go bankrupt.

5) There are many (certain) around the issue that whether or not there is life on the Moon.
6) Please pay (attend) when the teacher is talking.

7) His study results are very (satisfy), which of course makes his parents (satisfy).
8) (Technique) problems are not easy to fix, especially for a girl as you.

<b>IV. Fill in each blank with an appropriate preposition.</b>

1) When being caught by the police, he had been driving …… a speed ….. 120 km/h.
2) Can you imagine how people will react …. such a behavior?

3) The Chinese spacecraft is now …. orbit … the Earth.

4) Before Gagarin’s flight, no one knew precisely what would happen … a human being …. space.
5) The Russian were the first to make man’s venture … space possible.

6) I would like to share … all of you here your satisfaction … what you have done in the competition.
7) Neil Armstrong was the first human to set foot … the Moon.

<b>V. Complete the following tag questions </b>
1. Somebody is singing, ………?

2. These math problems are easy, ………?
3. Huynh’s never been to the North, ………?

4. Everyone knows how to operate the machine, ………?
5. Phuong’s rarely absent from class, ………?

6. I was right when I refused the offer, ………?
7. I believe you will strongly agree with me, ………?
8. Phu’d like to go to the party with us, ………?

9. Phuc’d left the station when we arrived there, ………?
10. Nobody left school early, ………?

<b>VI.</b> <b>Choose the correct answers, A, B, C, or D</b>
1. I ………….. find the papers I had misplaced yesterday.

A. could C. can

B. was able to D. Both A and B

2. They ……. get in the laboratory because the door was locked.

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B. weren’t able to D. could

3. You said you were going to talk to Mr. Banks yesterday. ……… you talk to him?

A. Could C. Couldn’t

B. Were you able to D. Both A and B

4. No, I ……. talk to Mr. Banks. He was not in his office.

A. couldn’t C. wasn’t able to

B. could D. Both A and C

5. When you went to the mall, _______________find the jacket you were looking for?

A. Could you C. Were you able to

B. Can you D. Both A and C

6. I went to Dillard's, J.C. Penney's, and Foley's, and I still ……….. to find the color and
size I was looking for.

A. couldn’t C. wasn’t able to

B. could D. Both A and C

7. Last year the company ……… sell more products over the Internet than in stores.

A. was able to C. could

B. can D. Both A and C

8. ………. see the pyramids when you were in Mexico City last summer?

A. Could you C. Can you

B. Were you able to D. Both A and B

<b>VII.</b> <b>Read the following passage and decide whether the statements are True (T) or False (F)</b>
Some day people will certainly try to build settlements on the moon. The best places for
houses in a moon town will be a cave or a tunnel. Underground houses will not be squashed by
meteorites that constantly fall on the moon from outer space. This will be important on the moon,

since daytime is so hot that food could be cooked in the rocks, and the nights get bitterly cold
Pioneer moon homes may be made of airtight plastic that can be blown up like a
balloon inside the cave. The reason for this is that the moon has no air around it. The
pioneers will have to take along from the earth the oxygen masks when they are away
from home. But the balloon house itself will be filled with air. Perhaps the house will
have beds, tables, and chairs, built into it. These can be inflated, too. So people will sleep,
eat and work on air! Moon-house building will be easy. The moon’s gravity is less than
the earth’s. Everything weighs only one-sixth as much as it does on the earth.

<i><b>Questions</b></i>

1. In a moon town, what is the best place for houses?

2. Will the people on the moon wear oxygen masks when they leave their homes?

3. Why will the pioneers have to take along from the earth the oxygen they need for breathing?
4. If a stone weighs 18 tons on the earth, how much does it weigh on the moon?

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