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问题 不定项选择题

某温度下，一定量CH4燃烧后得到的产物CO、CO2、H2O(g)，此混合气质量为49.6g，当其缓缓通过足量浓

H2SO4时气体质量减少25.2g，则此甲烷完全燃烧还需要O2体积（SPT）为[ ]

A．8.96L

B．6.72L

C．4.48L

D．2.24L

答案

答案：C

补全对话，情景问答

情景交际,每空一词。

A: Hi, Li Yan! Have you ever been    l      the local library before?

B: You mean the one near the Dragon Tower?

A: That's the one.

B: I go to the English Corner in the library every Saturday. A lot of' English lovers practice spoken English

   together. Why   2    you join us?

A: Sounds great! Could you tell me how to get there?

B: The No.7 bus will take you right there.

A: How _3   is it?

B: It's about twenty minutes' ride.

A: _4 _  is the nearest bus stop?

B: Walk along the street and take the first turning on the left. It's opposite the post office. You can't   5  it.

A: Thanks a lot.

B : You're welcome.
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选择题

 Our school is       children         6—12.

A．in; for

B．for; in

C．of; for

D．for; of
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