Ⅰ. 词汇(共10分，每小题1分)
A) 根据句意及首字母提示补全句中所缺单词。
1. You should wear a pair of s________ when the sun is too bright.
2. Remember to bring your p________ before you leave for America.
3. They are skating on the very thin ice. They must be c________!
4. Paul invited many g________ to his home when he celebrated his birthday.
5. The factory produced a lot of cars last year. Do you know the t________ number of them?
