如图所示，L为一自感系数很大的有铁芯的线圈，电压表与线圈并联接入电路，在下列哪种情况下，有可能使电压表损坏（电压表量程为3V）

A．开关S闭合的瞬间

B．开关S闭合电路稳定时

C．开关S断开的瞬间

D．以上情况都有可能损坏电压表

用所给单词的正确形式填空。

1. Uncle Li is repairing the broken watch to make it              (use)．

2. It's important to pay attention to the             between English and Chinese. (different)

3. He needn't              (coach) these kids for the coming football match.

4. It's a pity they put off              (start) the museum.

5.             (use) extra words helps to make language more polite.