-When do we need to pay the balance?- September30．A．InB．ByC．DuringD．Within 题目和参考答案——青夏教育精英家教网——

题目内容

16．-When do we need to pay the balance？
-______________ September30．

A．

In

B．

By

C．

During

D．

Within

分析 --我们什么时候需要支付余款？
--到9月30日．

解答答案是B．本题主要考查介词辨析．在月日前应使用介词on；而选项中没有．during意为"在…期间"，后接段时间；within意为"在…内"，后接段时间；by意为"（表示时间）不迟于；在…时候"后接时间点，因此B项最适合．

点评介词辨析要在掌握各介词的基本用法和固定搭配的基础上结合语境做出符合逻辑、常理的推测．

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