沉井法是在不稳定含水地层中开凿井筒的一种特殊施工法，属于（）方法 A.同期支护 B.
题型：单项选择题
问题：
沉井法是在不稳定含水地层中开凿井筒的一种特殊施工法，属于（）方法
A.同期支护
B.超前支护
C.后期支护
D.滞后支护
题型：单项选择题
看图阅读下面短文，并借助上下文补充所缺信息。每个空只能填写一个形式正确、意义相符的单词。
China has the largest number of smokers in the world. Each year, about one million Chinese die 小题1: smokingrelated illnesses. Official statistics (统计) in 2014 showed that China 小题2: 380 million smokers, with another 650 million people forced to breathe in.
China began 小题3: part in the World Health Organization Framework Convention on Tobacco Control (《世界烟草控制框架公约》) in 2006.Governments at different levels have paid more 小题4: to tobacco control in the last few years. Beijing, Shanghai and Hangzhou have tobacco control rules. Half of China's public health institutions have been nonsmoking spaces 小题5: 2010.Smoking in some indoor public spaces and special 小题6: work spaces has not been allowed since January, 2011.
Selling tobacco to 小题7: younger than 18 is not allowed. The seller should ask the buyer to 小题8: his or her ID card if he can not 小题9: how old the buyer is.
For others and for yourself, please 小题10: up smoking.