煤层注水的注水方式中，对地质条件适应性较差的是（）。A、短钻孔注水 B、长钻孔注水

瀑布模型将软件生存周期划分为 【3】 、开发和运行3个阶段。

—Would you like to go with me next Sunday?

—Sorry, ______.[ ]

A. I am not sure    

B. I am not certain    

C. certainly    

D. sure

功能平肝潜阳、软坚散结、收敛固涩的药物是（）

A.鳖甲

B.龟板

C.牡蛎

D.龙骨

E.石决明

贡献毛益

Questions 23～26

A. It is a necessary part of life. B. It is a time of pressure and stress.
C. It is a carefree period of life. D. It is much shorter than it used to be.