问题 填空题

重力大小的计算公式是:______,式中g=______,它表示的物理意义是 ______.在地球不同的地方,物体所受的重力 ______(相同、不同)

答案

重力大小跟物体的质量成正比,重力与质量的比值大约是9.8N/kg.

用G表示重力,m表示质量,比值用g表示,重力与质量的关系可以写成:G=mg.

9.8N/kg所表示的物理意义是:质量是1kg的物体受到的重力为9.8N.

在地球的不同地方,g值会不同,所以物体所受的重力不同.

故答案为 G=mg,9.8N/kg,质量是1kg的物体受到的重力为9.8N,不同.

阅读理解

阅读理解。

     A mascot (吉祥物) is very important to an event. Do you know what the mascot of Shanghai World

 Expo 2010 is? Well, it is haibao. It can be seen almost everywhere in China now. The inspiration of the

design comes from a Chinese word "ren" which means people in English. It really looks like a man putting

up his hands and saying hello to everyone.

     The name, Haibao, comes from the Chinese phrase "Si Hai Zhi Bao". "Hai" means the sea in English,

and it also implies (隐含) that it was born in Shanghai. "Bao" is a lucky name in Chinese traditional culture.

The name not only means the treasure (宝藏) of the sea, but also means the treasure of Shanghai. Every

part of Haibao's body has its special meaning. For example, Haibao's hair is like the wave of the sea. Its

smiling face shows its friendliness. Haibao was designed by two artists, one from Shanghai and the other

from Taiwan. The design is very successful. It is very easy to remember and it also shows the theme of

Shanghai World Expo "Better City, Better Life". Haibao is confident, lovely and lively. It is a good

ambassador (形象大使) of Shanghai World Expo. It is welcoming friends all over the world with its

opening arms and friendly smile.

1. What's the meaning of the name" Haibao" in the passage?[ ]

A. It means sea water.

B. It means the Chinese word "ren".

C. It means the treasure of the sea and Shanghai.

D. It means a smiling face.

2. How many artists designed the mascot? [ ]

A. Two.

B. Three.

C. Five.

D. Eight.

3. What is the theme of Shanghai World Expo 2010? [ ]

A. Better City, Better Life.

B. One World, One Dream.

C. Welcome Home.

D. Share the Spirit.

4. Which of the following is NOT TRUE according to the passage? [ ]

A. Haibao has curly hair and a smiling face.

B. Haibao looks like a man saying hello to everyone.

C. The artists who designed Haibao come from the same place.

D. Haibao is a lucky name in Chinese culture.

单项选择题