按大气的温度结构分层有()
A.对流层
B.平流层
C.中层
D.热成层
参考答案:A, B, C, D
根据句意及首字母或汉语提示完成单词。
1. China is a l _____ country with a long history.
2. What s _____ shoes would you like?
3. We often have rice,meat, _____ (马铃薯) for lunch every day.
4. What _____ (饮料) would you have?
5. We have many great _____ (特色菜) in the restaurant.
干粉灭火器不会堵管,使用时不必特别注意。()