Câu hỏi:
31/10/2020 197
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.
Humans have struggled against weeds since the beginnings of agriculture. Marring our gardens is one of the milder effects of weeds – any plants that thrive where they are unwanted. They clog waterways, destroy wildlife habitats, and impede farming. Their spread eliminates grazing areas and accounts for one-third of all crop loss. They compete for sunlight, nutrients, and water with useful plants.
The global need for weed control had been answered mainly by the chemical industry. Its herbicides are effective and sometimes necessary, but some pose serious problems, particularly if misused. Toxic compounds threaten animal and public health when they accumulate in food plants, groundwater, and drinking water. They also harm workers who apply them.
In recent years, the chemical industry has introduced several herbicides that are more ecologically sound. Yet new chemicals alone cannot solve the world’s weed problems. Hence, scientists are exploring the innate weed-killing powers of living organisms, primarily insects and microorganisms.
The biological agents now in use are environmentally benign and are harmless to humans. They can be chosen for their ability to attack selected targets and leave crops and other plants untouched. In contrast, some of the most effective chemicals kill virtually all the plants they come in contact with, sparing only those that are naturally resistant or have been genetically modified for resistance. Furthermore, a number of biological agents can be administered only once, after which no added applications are needed. Chemicals typically must be used several times per growing season.
Which of the following best describes the organization of the passage
Sách mới 2k7: 30 đề đánh giá năng lực DHQG Hà Nội, Tp. Hồ Chí Minh, BKHN 2025 mới nhất (600 trang - chỉ từ 160k).
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Trả lời:
Đáp án C
Câu nào sau đây mô tả đúng nhất việc tổ chức đoạn văn?
A. Hai nguyên nhân có thể xảy ra của một hiện tượng được so sánh.
B. Một vấn đề được mô tả và các giải pháp có thể năng được thảo luận.
C. Một ý tưởng chung được giới thiệu và một số ví dụ cụ thể được đưa ra.
D. Một khuyến nghị được phân tích và bác bỏ.
Đã bán 152
Đã bán 114
Đã bán 132
Đã bán 47
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 2:
All payments to the ICRC are _________ and are received as donations.
Câu 3:
We oppose this war, as we would do any other war which created an environmental catastrophe.
Câu 5:
Williams is working _______ an export company. He intends to apply _______ another job because he is not satisfied _______ the salary.
Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
When the unemployment rate is high, the crime rate is usually also high
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