Many people think that it is making such an experiment.A. valuableB. worthwhileC. conveni

发布时间：2020-08-16 22:39:36

Many people think that it is      making such an experiment.
A. valuable
B. worthwhile
C. convenient
D. important

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A. valuable
(答案→)B. worthwhile
C. convenient
D. important
解析：考察固定句型。It is worthwhile doing sth值得做某事；
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