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  3. A mussel grips a hard surface very firmly to ______. According to Frank Roberto,what is the difficulty for American researchers

A mussel grips a hard surface very firmly to ______. According to Frank Roberto,what is the difficulty for American researchers

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问题 A mussel grips a hard surface very firmly to ______.
According to Frank Roberto,what is the difficulty for American researchers’ mass-production of mussel glue?
选项 A、The gene number that is known is not enough.
B、Mussels are much smarter than we think.
C、They can’t copy the blend of proteins of mussel.
D、Mussels have an amazing power harmful to man.
答案C
解析 由题干中的Frank Roberto定位至末段末句。细节题。末段第四句提到美国科学家已经分离并克隆了5种贻贝的胶水蛋白基因，并打算大批量生产，However话锋一转，指出只有贻贝知道每一种表面需要的复杂的蛋白成份，Frank接着问到：“你如何来模仿这一功能呢?”答案为C)。[避错]A)“贻贝不能被用来制作强力胶水”，与文意不符；B)“贻贝比我们想象的聪明”，与最后一句不符；D)文章谈到过贻贝是non-toxic，所以它是无害的。
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