[单选题]The members in the testing team were quite ()and could schedule upon request.

A

sophisticated

B

gentle

C

substantial

D

flexible

正确答案:D
题目解析

sophisticated复杂的;gentle温和的;substantial大量的,实质的;flexible灵活的,柔韧的。根据句意:测试小组成员(时间)非常灵活,可以根据自己要求改变时间表,应选D。

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