发现氧气瓶内有积水时，充气前应将（），完全排除积水后方可充气。
A、气瓶倒置
B、气瓶横置
C、气瓶竖置
D、轻轻开启瓶阀
参考答案：A, D
我国传统节日中，祭祖、扫墓的日子是（）节日？
用括号里所给单词的适当形式填空。
1. I wish I _____(can go) to London for the Olympic Games．
2. She decided that she _____(visit) the World Expo in Shanghai.
3. Hearing the exciting news, we were beside _____(oneself) with happiness.
4. It can't hurt her _____(say) these words.
5.She wrote her name and phone number on the paper _____(care).
