动词填空  (本大题共8分，每小题1分)

小题1:_________ (make) the little baby stop crying, he tried all the ways he could think of.

小题2:-- What’s the noise?

--- Oh, the students ___________ (plan) their autumn trip excitedly.

小题3:The radio says the temperature ___________ (drop) a lot later today.

小题4:The Smith __________ (fly) back to New York three days ago and they will come back in two days.

小题5:I got up early in order __________ (not be) late for school.

小题6:--- Why didn’t she stop him going out?

--- Sorry, but she ___________ (write) a letter and didn’t see him go out.

小题7:Mr Wu told us that light __________ (travel) much faster than sound.

小题8:I can’t understand why such a story made him __________ (laugh) so happily.

下列哪一项是痢疾志贺菌的特性？（）

A.可产生志贺毒素

B.只有1型

C.迟缓发酵乳糖

D.有15个型

E.培养中常出现扁平的粗糙型菌落