产生社会互动的条件包括（）。A、限于两个人之间 B、具有一定的互动结构 C、互相依赖 D、

阅读理解。

     All over the world, people enjoy sports. Sports are good for people's health. Many people like to

watch others play games. They buy tickets or turn on their TV sets or may be online to watch.

     Sports change with the seasons. People play different games in different seasons. Sometimes they play

inside the room. Sometimes they play outside. We can find sports here and there. Some sports are rather

interesting and people everywhere like them. Football, for example, is very popular in the world. People

from different countries cannot understand each other, but after a game they often become very friendly 

to each other.

1. Sports are good for _______.

A. the players

B. people's health

C. the coaches

D. people who like sports

2. If you like sports, you can _______.

A. buy tickets to watch the games

B. watch the games on TV

C. watch the games on the Internet

D. A、B and C

3. People play _______ in different seasons.

A. the same game

B. different games

C. any games

D. all kinds of games

4. _______ is very popular in the world.

A. Table tennis

B. Baseball

C. Football

D. Skating

5. From this passage we can see that _______ can become very friendly.

A. people from different countries all

B. people from the same country

C. people who do the same sports

D. after a game, people from different countries

The canteen is ________ the first floor.[ ]

A. on          

B. in      

C. at

下面说法不正确的是[ ]

A．三角形的面积一定，底和高成反比例

B．长方形的周长一定，长和宽不成比例

C．订阅《少年报》的份数和总钱数成正比例 

D．因为圆周长C= πd，所以π与d成反比例

电动潜油泵井正常生产时，井口装置中各闸阀所处的开关状态，称电动潜油泵井（）。

A、正常生产流程

B、停产流程

C、洗井流程

D、地质关井流程

消防泵电机运转时有什么注意事项？