Schools in the south tend to be better equipped，those in the north are relatively poor.A.

发布时间：2020-08-17 14:41:51

Schools in the south tend to be better equipped，    those in the north are relatively poor.
A. while
B. since
C. when
D. as

网友回答

(答案→)A. while
B. since
C. when
D. as
解析：这几个连词都可以表原因或时间，但while还有强调对比的意思,“而且”。
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