What CANNOT be inferred from the first paragraph? [br] Now scientists have found

游客2023-09-15  28

问题 What CANNOT be inferred from the first paragraph? [br] Now scientists have found in the past few years ______.

选项 A、the exposure of DNA to the public is unnecessary
B、the tiny cell in DNA is a neat little machine
C、man knows nothing about DNA
D、man has much to learn about DNA

答案 D

解析 推断题。由文章第四段可知,30年前人们将DNA的发现称为生物革命,刚开始时,人们认为DNA细胞很简单,但随着时间的推移,人们发现它其实极为复杂,由此推断,人们还需要进一步研究,所以D正确。
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