—What are you going to do this summer vacation?

—I’m going to start a club to help students _____not interested in schoolwork.

A．who is

B．that is

C．who are

D．which are

用水或注浆的方法灭火时，应将（）。

A.回风侧人员撤出

B.进风侧人员撤出

C.同时在回风侧有防止溃水的措施

D.同时在进风侧有防止溃水的措施