Đề thi giữa kì 2 lớp 12 môn tiếng anh năm 2021 2022 số 2 vndoc com

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ĐỀ THI GIỮA KÌ 2 LỚP 12 MƠN TIẾNG ANH
CĨ ĐÁP ÁN NĂM 2021 - 2022
Choose the word which has the underlined part pronounced differently from the rest.
1. A. grasses B. stretches C. comprises D. potatoes
2. A. lie B. wide C. circle D. comprise
3. A. picture B. action C. question D. future
4. A. swallow B. below C. slowly D. allow
Choose the correct answer to complete the sentence.
1. A / an _______ species is a population of an organism which is at risk of becoming
extinct.
A. dangerous B. endanger C. endangered D. endangerment
2. Only a few of the many species at risk of extinction actually make it to the lists and obtain
legal ______.
A. protect B. protection C. protective D. protector
3. Probability of extinction depends _______ both the population size and fine details of the
population demography.
A. on B. in C. from D. for

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4. Many modern medicines are derived _______ plants and animals.
A. on B. for C. from D. in
5. 15,589 species (7,266 animal species and 8,323 plant species) are now considered ____
risk _______ extinction.
A. at / of B. on / in C. for / with D. in / at
6. Sometimes it is ________ to find suitable books for our children.

A. difficult B. difficulty C. difficultly D. difficulties
7. A book may be evaluated by a reader or professional writer to create a book ________.
A. review B. reviewing C. reviewer D. reviewed
8. As for me, I consider reading ________ important part of ________ life.
A. an / Ø B. the / a C. Ø / the D. an / a
Choose the best answers to fill in the blanks:
The current global extinction rate is (1) _____ at about 20,000 species per year,
exponentially greater than the background extinction rate. Many biologists believe that we
are in the middle of the greatest mass extinction episode since the (2) _____ of the dinosaurs
65 million years ago.
From what is known about present-day populations and from evolutionary theory, the
change in either the physical (3) _____ the biological environment is the key to extinction.
However, the vulnerability of a species depends (4) _____ a wide variety of factors, such as
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its total population size, geographical distribution, reproductive ability, ecological relations
with other species, and genetic characteristics. For example, more emphasis is put on the
greater vulnerability of species that reproduce slowly as contrasted with those that reproduce
(5) _____. Other factors, such as food-plant specialization, may make many fast reproducers
more vulnerable than species that reproduce more slowly. No matter how fast an insect
species that depends on a certain plan can reproduce; it will still go extinct if that plant's
habitat is destroyed.
It has been estimated that about one half billion species have lived at one time or another,
and today's existing species are only 2% of those that have ever evolveD. The other 98%
have either died out or evolved into something sufficiently different to be called a new
species.
1. A. increased B. distributed C. estimated D. added

2. A. disappearance B. remain C. disposal D. limitation
3. A. so B. and C. nor D. or
4. A. in B. on C. at D. about
5. A. rapidly B. cheaply C. cheerfully D. lastly
ĐÁP ÁN
Choose the word which has the underlined part pronounced differently from the rest.
1 - D; 2 - C; 3 - B; 4 - D;
Choose the correct answer to complete the sentence.

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1 - C; 2 - B; 3 - A; 4 - C; 5 - A; 6 - A; 7 - A; 8 - A;
Choose the best answers to fill in the blanks:
1 - C; 2 - A; 3 - D; 4 - B; 5 - A;
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