问题 选择题

The police failed to come up with ______ evidence, and on that account the suspect was released.

A.effective

B.valid

C.subtle

D.considerate

答案

答案:B

词义辨析. A.有效地;实际的;起作用的  B. 有根据的;正当的 C.微妙的;狡猾的  D. 体贴的;考虑周到的.根据题意,警方不能提供有效地证据,由于这个原因嫌疑犯被释放了.故选B,证据应该是有根据的.

单项选择题
单项选择题 B型题