题目内容

21、A vast area north of the Yangtze River        by the first heavy snow of the new year, causing difficulties to the post – festival road transport.

A.were affected   B.has affected     C.had affected     D.was affected

试题答案

21、D

涓€棰樹竴棰樻壘绛旀瑙f瀽澶參浜�
涓嬭浇浣滀笟绮剧伒鐩存帴鏌ョ湅鏁翠功绛旀瑙f瀽
绔嬪嵆涓嬭浇
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