Đề thi học kì 2 lớp 12 môn Tiếng Anh trường THPT Lê Duẩn năm học 2018 - 2019

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ĐỀ THI CUỐI HỌC 2 MÔN TIẾNG ANH LỚP 12
NĂM HỌC 2018 - 2019
I. Read the passage carefully and choose the correct answer.
Plants and animals hold medicinal, agricultural, ecological value. Endangered species
must be protected and saved so that future generations can experience their presence and
value.
Plants and animals are responsible for a variety of useful medications. In fact, about
forty percent of all prescriptions written today are composed from the natural compounds of
different species. These species not only save lives, but they contribute to a prospering
pharmaceutical industry worth over $40 billion annually. Unfortunately, only 5% of known
plant species have been screened for their medicinal values, although we continue to lose up
to 100 species daily. The Pacific yew, a slow-growing tree found in the ancient forests of the
Pacific Northwest, was historically considered a "trash" tree. However, a substance in its
bark was recently identified as one of the most promising treatments for ovarian and breast
cancer. Additionally, more than 3 million American heart disease sufferers would die within
72 hours of a heart attack without digitalis, a drug derived from the purple foxglove.
There are an estimated 80,000 edible plants in the world. Humans depend upon only 20
species of these plants, such as wheat and corn, to provide 90% of the world's food. Wild
relatives of these common crops contain essential disease-resistant material. They also
provide humans with the means to develop new crops that can grow in inadequate lands such
as in poor soils or drought-stricken areas to help solve the world hunger problem. In the
1970s, genetic material from a wild corn species in Mexico was used to stop a leaf fungus
that had previously wiped out 15% of the U.S. corn crop.
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Plant and animal species are the foundation of healthy ecosystems. Humans depend on
ecosystems such as coastal estuaries, prairie grasslands, and ancient forests to purify their air,
clean their water, and supply them with food. When species become endangered, it is an
indicator that the health of these vital ecosystems is beginning to unravel. The U.S. Fish and
Wildlife Service estimates that losing one plant species can trigger the loss of up to 30 other
insect, plant and higher animal species. The northern spotted owl, listed as threatened in
1990, is an indicator of the declining health of the ancient forests of the Pacific Northwest.
These forests are the home to over 100 other old-growth dependent species, which are at risk
due to decades of unsustainable forest management practices. Pollution off the coast of
Florida is killing the coral reefs along the Florida Keys, which serve as habitat for hundreds
of species of fish. Commercial fish species have begun to decline, causing a threat to the
multi-million dollar tourism industry, which depends on the quality of the environment.
1. Plants and animals _______.
A. contain medicaments
B. take no responsibility for medication
C. will not exist until the future generations can experience their value
D. do some harm to medication
2. Which sentence is true?
A. The coast of Florida does not suffer any pollution.
B. The loss of one species may lead to the loss of others.
C. Humans do not depend on ecosystem.
D. Unsustainable forest management practices have no effects on species.
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3. The word trigger has a close meaning to _______.
A. decline B. cause C. pollute D. contaminate
4. Plants and animals _______.
A. take up all recent prescriptions are B. play no role in pharmaceutical industry
C. can be used to save lives D. cause difficulty to pharmaceutical industry
5. According to the text, _______.
A. there is no disease-resistant material in edible plants
B. human beings depend on plants for food and medicine
C. human beings do not like to use plants as medicine
D. edible plants do not include wheat and corn
II. Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to
each of the following questions.
6. Itwas_____ best film I had ever read.
A. the B. Ø C. an D. a
7. I won't change my mind ______ what you say.
A. although B. no matter C. because D. whether
8. An architect is someone..........deigns buildings.
A. who B. which C. whom D. whose
9. He read the Old Man and The Sea, a novel ………..by Ernest Hemingway.
A. written B. writing C. that wrote D. which written

Đề thi Tiếng Anh lớp 12 học kì 2 chương trình mới

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