影响毛蚴感染力和寿命的因素有()A．温度 B．紫外线照射 C．水的浊度 D．水流速度

连词成句。

1. about, is, it , programme, a, China

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2. it, how, was, different                                                                               

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3. enough, we, food, have, didn't

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4. I, my, TV, watched, with, yesterday, grandchildren

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5. was, years, very, many, ago, different, life

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《中法简明条约》

甲乙两人各进行三次射击，甲每次击中目标的概率为，乙每次击中目标的概率为，则乙恰好比甲多击中目标2次的概率为（）。

A.A

B.B

C.C

D.D

E.E

immunohistochemistry