下列对物质世界的认识正确的是（ ） A．太阳是宇宙的中心 B．原子是不可再分的最

阅读理解。

    Mr. Brown lived in a small town, but he got a job in a big city, so he moved there with his wife and his

two children last Tuesday.

    The next day Mr. Brown took his new car out of the garage and was washing it when a neighbour came.

The neighbour stopped and looked at the new car for a minute. Then Mr. Brown turned and saw him.

    The neighbour said, "That's a new car. Is it yours?"

    "Sometimes," Mr. Brown answered.

    The neighbour was surprised. "Sometimes?" he said. "What do you mean?"

    "Well," answered Mr. Brown slowly, "when there's a party in town, it belongs to my daughter, Jean.

When there's a football game, it belongs to my son, Joe. When I have washed it and it looks really nice and

clean, it belongs to my wife, Mary. And when it needs gas, it's mine."

New words:

1. garage n. 车库

2. neighbour n. 邻居

3. surprise v. 使惊奇

4. belong to 属于

5. gas n. 汽油

1. There are ______ people in the story. [ ]

A. three

B. four

C. six

D. five

2. Mr. Brown worked in ______. [ ]

A. a small town

B. a big city

C. the garage

D. the gas station

3. When Mr. Brown was washing the new car, his neighbour came to ask him ______. [ ]

A. if the car was new

B. what car it was

C. if the car was Mr. Brown's

D. whose car it was

4. When there was a football match, the car belonged to ______. [ ]

A. Mr. Brown

B. the neighbour

C. Jean's brother

D. Jean

5. "Sometimes" in the story means that ______. [ ]

A. when there was a party in town, the car belonged to his daughter

B. when there was a football game, it was his son's

C. when the car looked nice and clean, it was his wife's

D. when the car wanted gas, it belonged to him

E. all above.

相对数是（）。

A．两个数或两个指标的比值

B．数值的相对可靠度

C．两事物联系程度的指标

D．进行动态分析的唯一指标

E．计数数据大小的指标

流体的压头

败毒散的君药是

A．柴胡、前胡

B．人参

C．川芎、枳壳

D．羌活、独活

氯水换热器的结构、材质、作用是什么？