It ____ to me that we can telephone our teacher and see whether he knows what to do with the situation.

A．occurs

B．strikes

C．happens

D．takes

氯丙嗪对体温调节影响的特点有（）

A.与某些中枢抑制药合用可降低患者代谢及组织耗氧量

B.使机体体温随环境温度变化而升降

C.对正常人体温不影响

D.可略降低正常人体温

E.抑制下丘脑体温调节中枢，使体温调节失灵