Unit13 We’re trying to save the earth Period 1 同步练习

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Unit13 We're trying to save the earth.
Section A Period1同步练习
1、单词填空。
1．Let's pick up the ________ (垃圾)and put it into the bin.21世纪教育网版权所有
2．Factories should burn less _________to reduce air pollution.2·1·c·n·j·y
3．The book I want is right at the ________ (底部)of the shelf.
4．Many people prefer ________ (木头的)floors to those covered with bricks.
5.The f ________ lost his boat in the storm.
2、单选。
1.It's necessary for the phubbers(低头族) to ________ the time they spend on their smart phones. 【来源：21·世纪·教育·网】
A．cut in B．cut off C．cut down D．cut up
2.Everyone was afraid of him because there were deep_______lines(皱纹)on his face.
A．ugly B．kind
C．beautiful D．peaceful
3. Li Ming used ________ on the right in China, but he soon got used ________ on the left in England.21*cnjy*com
A . to drive; to drive B . driving; driving 21*cnjy*com
C . to driving; to drive D . to drive; to driving
4. —A study shows that good habits play a very important _______in children's education.
—I think so.
A．sense B．part C．reason D．meaning
5.—________ .
—Sorry，I won't.I'll pick it up.
A．Try to keep the classroom clean.
B．Don't throw litter everywhere.
C．Don't make any noise in public.
D．Let's pick up the litter on the ground.
三、情景对话。
A. What should we do to protect our Earth B. What are you reading C. What will our life be like in the future D. What should we do in public places E. Because our Earth is being damaged seriously now.F. We should also learn to save water. G. What can you do to help us
A: Hi, Millie ___________________
B: I'm reading a report about our life in the near future. www.21-cn-jy.com
A: ___________________
B: It says we have to move to another planet in the future.【来源：21cnj*y.co*m】
A: Why
B: ___________________ It will not be a good place for people to live after a few years.【出处：21教育名师】
A: ___________________
B: We should plant more trees.
A: I agree. What else
A: ___________________
A: Yes. We can do it by taking a shorter shower.
B: You're right,
四、阅读。（2017台州)
Our factories and homes burn coal and oil. Every year we have forest fires somewhere. Many scientists believe that the weather is changing.21教育网
The earth will perhaps be warmed by about 7℃ at the South Pole(极) and the North Pole. The ice will be melt(融化). The sea level(平面) will rise by about 7 meters. As a result, water will cover cities like London, Tokyo and New York. Some ports(港口) and towns along the coasts will disappear under water.21·世纪*教育网
Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block out(封闭) the ultraviolet rays(紫外线). Then the earth will become colder and great sheets of ice will cover Europe and North America.
When chemicals in the air mix with rain, we have acid(酸) rain. Acid rain can bring us great harm. It destroys(破坏) forests and kills life in lakes and rivers.
People are beginning to see how serious the problem is. They find it important to work with nature instead of against it. They are trying to save the earth in many different ways. But one of the most important things to do is to make people understand that saving the earth is saving ourselves.21cnjy.com
（1）What do our factories and homes do
A . They burn coal and oil.
B . They cut down the trees.
C . They burn down forests.
D . They have acid rain.
（2）Some scientists believe that ____________ . 2-1-c-n-j-y
A . the earth is growing warmer
B . we have to burn down the forests every year
C . we can find oil in our forests
D . we need coal in our forests
（3）Ice at the poles will ____________ if the earth gets warmer.
A . become thicker by seven meters
B . cover cities like London and Tokyo
C . raise the sea level by 7 degrees
D . become water and make the sea rise
（4）What can we learn from the third paragraph
A . The dust together with pollution from coal, wood and oil fires will bring us more heat from the sun. 【版权所有：21教育】
B . The ultraviolet rays will come more because of the dust and pollution from fires.
C . According to the scientists, the change in weather hardly has anything to do with the pollution. 21·cn·jy·com
D . As a result of the dust and pollution from coal, wood and oil fires, the earth will become colder.www-2-1-cnjy-com
Unit13 We're trying to save the earth.
Section A Period1同步练习答案
一、1.litter 2.coal 3.bottom 4.wooden 5.fishman21教育名师原创作品
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