The boy was saved because the doctor arrived there it was too late.A. beforeB. sinceC. or

发布时间：2020-08-16 22:34:40

The boy was saved because the doctor arrived there      it was too late.
A. before
B. since
C. or
D. while

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(答案→)A. before
B. since
C. or
D. while
解析：考查状语从句。因为医生及时到达久了那个男孩一命，根据题意，医生在太晚之前到达，也就是说及时到达。
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