问题 问答题

压强计是测量______的仪器,当金属盒的橡皮膜受到压强作用时,U形管左右两侧液面产生______,液面______的大小反映出橡皮膜所受______的大小.

答案

压强计是测量液体压强的仪器,当金属盒的橡皮膜受到压强作用时,U形管左右两侧液面产生高度差,液面高度差的大小反映出橡皮膜所受压强的大小.

故答案为:液体压强;高度差;高度差;压强.

名词解释
阅读理解

阅读理解

       After SARS happened in Beijing, people's lifestyle changed a lot. People were busy exercising

every day in the backyards. Parks looked like busy shopping areas. People wanted to breathe clean

air and enjoy nature. It is necessary for people to take exercise outdoors. Skateboarding, swimming,

running-everyone has a way of building up their bodies. Badminton (羽毛球) and table tennis are good

choices.

       Liu Tong said, "I didn't exercise much before, because I was always too busy with work. But now

with the spread of SARS, I come here after work everyday."

       The virus (病毒) gave us a chance to think about a lot of things around us. Health became the first

thing for everybody. The sports goods (东西) became the most needed in Beijing.

1. After the SARS outbreak (爆发), people in Beijing were busy ______.

A. buying things

B. staying at home

C. exercising

D. taking medicine

2. During the time, people in Beijing liked _______.

A. skateboarding

B. doing outdoor exercise

C. swimming

D. running

3. What does the underlined word"here"mean?

A. Parks.

B. Shopping areas.

C. Offices.

D. Hospitals.

4. Why didn't Liu Tong do exercise much before?

A. Because he was very strong before.

B. Because he was always too busy.

C. Because he had no place to do exercise.

D. There was SARS virus around the world.

5. Which is the main idea of the passage?

A. SARS is a very serious virus, but everyone in Beijing isn't afraid of it.

B. Body-building machines and equipment are very popular in Beijing after SARS.

C. We should stay at home to fight against SARS.

D. SARS makes people pay attention to (注意、重视) their health.