下水前观察游泳处的环境，若有（），则不能在此游泳。
A.危险警告
B.安全标志
C.青山绿水
D.以上都不对
参考答案：A
根据句意及首字母补全在本课中出现的单词.
1. At first, the girl was n_____.
2. Could you give me some good a_____.
3. I'm c_____ in myself.
4. Is that boy an e_____ student.
5. My deskmate is a hard w_____.
6. I hope you can give me c_____ to speak English.
7. Could you talk about your t_____ for learning English?
8. We all s_____ to do well in school.
中国海运的基本险中不包括（）。
A.战争险
B.平安险
C.水渍险
D.一切险
