用括号内所给动词的适当形式填空。

小题1:I ________ (read) a novel last night when I heard knocks at the door.

小题2:The young man ________ (live) alone since he graduated from college.

小题3:Be careful ___________ (not fall) off the ladder.

小题4:The actor and director ________(be) coming to give us a speech next weekend.

小题5:I overslept this morning. By the time I got to the train station, the train ________ (leave).

以下关于解磷定对急性有机磷农药中毒的作用的叙述哪项不正确（）

A.尽早使用

B.副作用有视力模糊

C.连续使用72小时

D.与阿托品合用最理想

E.可解除烟碱样和毒蕈碱样作用