2. 考研
  3. Scientists are expected to carry out thoroughgoing studies to back up claim’s made concerning new drugs.

Scientists are expected to carry out thoroughgoing studies to back up claim’s made concerning new drugs.

admin2010-01-13  110
问题 Scientists are expected to carry out thoroughgoing studies to back up claim’s made concerning new drugs.
选项 A、support
B、elevate
C、investigate
D、challenge
答案A
解析  画线词back up，在这里的意思是：依靠，支持；其近义词为A support。辨义：A support支持。辨义：通过语义判断，到分辨词汇可分辨义：A．elevate；B．提高；C．investigate调查； D．challenge挑战。故正确答案为A。
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