A.man is covering huge areas with new kinds of plants
B.man is facilitating the spread of animals into new regions.
C.man is killing some species on a large scale
D.man is getting to know the importance of keeping the balance of nature.
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单选题 | According to the author, a bachelor resists marriage chiefly because ____________ . | 查看答案 |
单选题 | Which of the following can tell the main idea of the passage? | 查看答案 |
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单选题 | Wendy | 查看答案 |
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单选题 | Mark | 查看答案 |
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单选题 | Jenny | 查看答案 |
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单选题 | We make a nature sanctuary for rare birds but _______________. | 查看答案 |
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单选题 | According to Paragraph 2, which of the following does not describe the characteristics of a microwave heater? | 查看答案 |
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单选题 | The following examples except _______________ reflect man altering the balance of nature. | 查看答案 |
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单选题 | What is the author trying to tell us? | 查看答案 |