题目

.This piece of evidence doesn't _______ what the other witness said. We have to conduct a full investigation.    A. fit in with     B. keep up with    C. come to terms with  D.stay in touch with 答案:A已知向量a、b满足||=1,||=2,|-|=2,则|+|等于( )A.1B.C.D.
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