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问题: To be well fie for the job,_______.

To be well fie for the job,_______.

A. a good knowledge of physics is needed

B. one needs to have a good knowledge of physics

C.it is required that one should have a good knowledge of physics

D.a good knowledge of physics is important

解答:

选B,前一分句为目的状语从句,其主语应该是人.