考博考试

【单选题】 According to the passage, all of the following statements are true EXCEPT ______.
A．The two strands making up DNA's double helix can find each other easily in a complex chemical mixture
B．Evolution has solved the problem of building a computer smaller than a speck of dust a long time before
C．DNA not only programs cells to replicate themselves but also instructs them how to assemble individual molecules into new materials
D．The read-head components for computer hard drives are constructed by means of the technology known as a molecular beam epitaxy

网考网参考答案：C
网考网解析：
选项A，可以从文章最后一句话看出。选项B，第5段"Building a super-computer... until one realizes that evolution solved such problems..."是说千万年前自然进化就解决了题中所说的问题。选项D在第4段最后一句提到。选项C，文中并没有提及这样一个问题，并且最后一段说这些生物大分子是self assembly(自我组装的)，没有什么东西来instructs them，所以C是不符合原文的。所以此题选C。 查看试题解析出处>>