What can’t be inferred from the 1st paragraph? Now scientists have found in the past few years ______.

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问题 What can’t be inferred from the 1st paragraph?
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、mart knows nothing about DNA
D、man has much to learn about DNA

答案D

解析 细节辨析题,通过理解原文即可推判得知答案。承接第4段末尾人们对DNA的再认识(But just in the last few years has become almost unbelievably complex, filled with strange parts whose functions are beyond today’s imagining),作者在第5段指出了对DNA研究的态度:继续深入地开展下去。由此确定答案为D。
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