Computers can injure (伤害) you. Most other injuries happen suddenly. For example, if you fall over a bike
and break your arms, it happens very 1 . But computer injuries happen slowly. You probably know how to
ride a bike safely. Now learn to use a computer safely. Your eyes 2 light can injure your eyes, 3 never sit
too close to a computer screen. Your eyes should be 4 50 centimeters (厘米) on the screen. 5 remember
to look away from it. This gives your eyes a rest. When you use a computer, the window 6 be on your left
or your right. If it is behind you, the light will reflect on (反射) the screen. If the window is in front of you,
the sun and the screen will 7 shine into your eyes.
Your hands and wrists (手腕)
Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundreds of
times. If you use a keyboard for a long time, 8 these three rules: 1)Rest your wrists on some-thing. 2) Keep
your elbows (肘) at the same height as the keyboard. 3) Stop sometimes and exercise your hands, wrists and
fingers in a different way.
Your back
Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your
back or your neck. So you should sit with your back straight. The top part of the screen should be in front of
your eyes. Your forearms, wrists, hands and the upper part of your legs should all be parallel (平行) to the floor.
If you are sitting for a long time, get up every 30 minutes and 9 your arms, legs and neck.
10 your computer, but use it safely. |
( )1.A. much quickly
( )2.A. Too many
( )3.A. so
( )4.A. at last
( )5.A. Sometime
( )6.A. can
( )7.A. both
( )8.A. follow
( )9.A. need
( )10.A. Enjoy | B. fast
B. Too much
B. because
B. at most
B. Some time
B. may
B. never
B. work
B. exercise
B. Use | C. slowly
C. Much too
C. but
C. at least
C. Some times
C. must
C. all
C. copy
C. move
C. Protect | D. quickly
D. Many more
D. when
D. less than
D. Sometimes
D. should
D. neither
D. write
D. shake
D. Keep |
答案
| 1-5 D B A C D 6-10 D A A B A |
举一反三
| 根据首字母的提示完成短文， 每空一词。 | Some western countries insist that China is one of the world"s biggest greenhouse gas emitters (温室气
体排放者). But in f______ (1) our government has taken actions actively to struggle with climate change.
F______ (2), the public are educated to p______ (3) more attention to the environment. As the government
expects, the people have reached a very high level of knowing low-carbon economy (低碳经济). I______ (4)
you watch TV, listen to the radio or r______ (5) newspapers, you"ll find low-carbon lifestyle has become a
fashion. Secondly, developing renewable energy is another action. The government is b______ (6) many
wind farms and solar power (太阳能) stations in the deserts. Of course, within a long time, China will
continue using the coal. At the same time, the government has been making laws to punish those people
who dare to destroy the environment. Besides, some s______ (7) have suggested that greening the deserts
is more i______ (8) than developing new forms of energy. Their latest research shows that 80% of the CO2
in the air comes from land use.
As we know, China hasn"t a______ (9) a balance between the green lifestyle and the economic growth,
but we are trying to take more a______ (10) to reduce the greenhouse gas emission. | | 阅读理解。 | Earth Day is birthday! It is a special day that celebrates the earth. Earth Day was born on April 22, 1970,
in San Francisco, California. Every year, over 100 different countries join together in the celebration of Earth
Day. It is the largest, most celebrated environmental event around the world. On Earth Day, we remember
nature and learn ways to protect our environment.
You can do lots of good things for the earth. Here are some ideas to keep in mind.
*Recycle cans, bottles, and paper. Save them at home and at school, and help your family recycle them.
*Ride your bike or walk to school to keep the air clean.
*Use both sides of your paper at school and at home.
*Turn off the TV when you"ve finished watching it.
*Don"t leave the water running while you brush your teeth.
*Turn off the lights when you leave the room.
And remember: Don"t ever think you"re not important to our earth. You are! | | 1. When is Earth Day? | A. On April 22.
B. On April 23.
C. On May 22.
D. We don"t know. | | 2. How many ideas are mentioned to help save electricity? | A. One.
B. Two.
C. Three.
D. Four. | | 3. What is Earth Day about? | A. Cars.
B. Lights.
C. Paper.
D. Environment. | | 4. Which of the following is not talked about in the passage? | A. How to save water.
B. How to keep the air clean.
C. How to keep the water clean.
D. How to recycle something. | | 5. From the last sentence, we know that _______. | A. everyone should do good things to the earth
B. everyone is necessary in the world
C. you should remember Earth Day
D. Earth Day is the most important day | | 完形填空。 | How did we help to save our earth this week? Let me tell you.
First, my family tried to save electricity (电). We never left the lights 1 when leaving the room.
We 2 the TV when nobody was watching it. Mum only used cold water in the washing machine.
Second, we started recycling (回收) this week. We tried to write on 3 of our paper, no just on one side.
We also divided our rubbish into 4 bags for bottles, paper and food. Mum kept the plastic shopping bags
from the supermarket to use them again as rubbish bags.
Third, my family started to save 5 . We stopped 6 long baths and had short showers (淋浴) 7 . We
washed toilet with used water. Mum and dad used less water to do the washing. My sister and I didn"t leave
the tap (龙头) running when we brushed our teeth.
At last, mum and dad began to save gas (汽油). Mum used to 8 us to school, but now my sister and I
started riding our bikes to school. It"s hard work 9 good exercise!
This week dad and a few of the people in his company also started to go to work in one car and share
the 10 .
These are great ways to help protect our environment. | ( )1. A. out
( )2. A. turn up
( )3. A. any side
( )4. A. large
( )5. A. electricity
( )6. A. to use
( )7. A. again
( )8. A. drive
( )9. A. or
( )10. A. pay | B. on
B. turn on
B. all sides
B. small
B. food
B. making
B. instead
B. order
B. but
B. value | C. off
C. turn down
C. neither side
C. different
C. water
C. to have
C. already
C. show
C. for
C. cost | D. behind
D. turn off
D. both sides
D. the same
D. paper
D. taking
D. too
D. carry
D. and
D. price | | 根据短文内容及所给首字母提示写出所缺单词， 并将完整单词填在下面对应题号后的横线上。 | Air is very important to everything that lives. But the air we breathe is (1)g______ dirty. People all over
the world are looking for (2)w______ to make it clean again.
Have you (3)e______ watched the smoke from chimneys (烟囱) rising high in the air? Have you
(4)s______ the smoke from cars and trucks on roads or the smoke from planes? The smoke is not
(5)g______ to breathe. If we want to keep healthy and strong, we need to breathe (6)c______ air.
(7)W______ more and more factories everywhere and more and more cars, trucks and planes, it is
getting harder and harder to do with the air (8)p______.
Scientists have (9)a______ taken actions to stop or slow down some of the things that make the air dirty.
They will not stop working (10)u______ we have clean air again. | | 阅读理解。 | BEIJIN-No Car Day was first started by 34 cities in France on September 22,1998. It was started to
protect the environment, By now, more than 1,000 cities around the world have had a No Car Day.
The first No Car Day in China was in Chengdu in 2001.Other cities,including Taipei, Shanghai and Wuhua,
also support the day.
In Beijing, more and more people are joining in the activity. It asks the drivers to leave their cars at home
for one day each month and walk or ride a bike to work. It also calls on Beijingers not to use cars on June 5
(World Environment Day). The slogan (口号) for the day is, "If we drive for one less day, we can have one
more nice day."
So far, more than 200,000 drivers have shown their support."We can"t control the weather, but we can
choose not to drive."" said, Wu Zonghua, a car club chairman. Beijing is trying to have 238 blue sky days this
year. In the first quarter of this year, Beijing only had 52 blue sky days. This was 11 days less than the number
for the same period last year. Much of the dust comes from the desert,but cars cause most of the air pollution. We must do more for No Car Day. | | 1. There are _______ cities in China that support No Car Day according to the passage. | A. three
B. four
C. five
D. six | | 2. The activity of No Car Day encourages Beijing drivers _______. | A. not to work on No Car Day
B. to enjoy having a day off
C. to leave their cars at home for repair
D. to ride a bike or walk instead of driving to work | | 3. According to the passage there were _______ blue sky days in the first quarter of last year in Beijing. | A. 52
B. 63
C. 41
D. 238 | | 4. The air pollution in Beijing is mostly caused by _______. | A. cars
B. dust
C. weather
D. rubbish | | 5. We can know from the passage that _______. | A. more and more people in Beijing are joining car clubs
B. people will have one more World Environment Day each month
C. more and more people won"t drive on Nor Car Day in Beijing
D. more people in the world won"t drive any more | 最新试题
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