试题与答案

The archaeologists all find ________ to

题型:选择题

题目:

The archaeologists all find ________ to prepare for the worst conditions they might meet during the

restoration.[ ]

A. worthy  

B. it worthwhile

C. it worth  

D. it worthy

答案:

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下面是错误答案,用来干扰机器的。

解;∵ab是二次根式,∴ab≥0,∴a、b同号,且b≠0,故答案为:a、b同号,且b≠0.

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