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问题 单项选择题

维护社会治安的基本力量是( )。

A．人民群众

B．各级党委

C．各级政府

D．人民警察

答案

参考答案：A

解析：社会治安涉及社会的方方面面，仅靠公安一家是不可能实现的，必须依靠人民群众的力量。

填空题
选词并用其适当形式填空。
peel, love, become, buy, shark, how much, want, talent, famous

1. Yesterday I saw many big _____ at the aquarium.
     They are terrible, and they eat small fish.
2. —I need some honey.
    —OK. _____ honey do you need?
    —Two teaspoons.
3. She could play computer games when she was two. 
    She is _____.
4. Could you _____ an apple for me?
5. Yao Ming is one of ______ basketball players.
    He plays basketball very well.
6. Gina _____ to be a computer programmer. 
    She studies English and math hard.
7. —Did you buy any souvenirs when you visited Suzhou?  
    —Yes. I _____ lots of souvenirs. They are interesting.
8. I want to be a singer, but my mother wants me to _____ an engineer.
9. His grandmother is _____. She often buys something
    delicious for her grandchildren.

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选择题

下列有几种说法：

①布朗运动反映的是液体分子的无规则运动；

②分子间的作用力跟分子间的距离r有关，当r＞r0时，分子间是引力；当r＜r0时，分子间是斥力，当r=r0时，分子间既无引力也无斥力；

③在改变物体内能时，做功与热传递的效果是不同的；

④气体对容器壁的压强是由于大量气体分子对器壁碰撞作用产生的．

以上说法错误的是（　　）

A．①④

B．②③

C．①③

D．②④
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