2024-2025人教版英语九年级unit 13第二课时Section A（3a ~ 4c）课时训练（含答案解析）

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Unit 13 We’re trying to save the earth!
第二课时Section A（3a ~ 4c）
一、根据句意及所给汉语提示，用恰当的短语填空。
1.One third of boys in my class ______________(参加) the running race last week.
2.If you don’t work hard now, you’ll ______________(为……付出代价) it later when you fail your exams.
3.Last month they ________________(采取行动) to prevent water pollution.
4.Insects are fairly low on ________________(食物链).
5.One of his fingers was ________________(切掉) in the accident.
二、完形填空。
A desert is a large area of land. There is 1 rain and not many plants. The size and the place of the world’s deserts are always changing. In the last hundred years, deserts have 2 more and more. That’s mainly 3 men. In the 19th century some people brought a little animal called rabbit to Australia from England. Today there are 4 them .They eat every plant which they can see. The great desert in the center of Australia is becoming 5 .
There are places in North Africa where great cities once stood. There 6 to be gardens and trees and grass. But now these places are deserts. Scientists studied the land to 7 what happened. Many of them thought the land disappeared when the trees were 8 down.
Trees help other plants grow .And they keep the earth from being blown (吹) away. In forests, leaves on the ground keep rainwater from running off.
Men can make deserts, but they can 9 stop them from getting bigger. For example, in China, the Great Green Wall was 10 and it has already saved a lot of land. But more “Great Green Walls” are still needed all over the world. Can we stop deserts from getting bigger and save the land Yes, we can. And we must.
1．A．a little B．a few C．very little D．very few
2．A．formed B．made C．taken D．become
3．A．for B．since C．as D．because of
4．A．thousand B．millions C．thousands D．millions of
5．A．better B．bigger C．less D．smaller
6．A．used B．came C．had D．made
7．A．find B．find out C．look D．look for
8．A．broken B．cut C．pulled D．fallen
9．A．also B．too C．either D．neither
10．A．heard B．won C．built D．Made
三、阅读理解。
Many people know that rubbish is a big problem on planet Earth. What many people don't know is that junk(垃圾)has become a problem in outer space too.
According to BBC News, there are more than 22, 000 pieces of space junk floating around the earth. And these are just the things that we can see from the surface of the earth by telescopes (望远镜). There are also millions of smaller pieces of junk that we can't see.
Objects, like bits of old space rockets or satellites, move around the planet at very high speeds fast that even a very small piece can break important satellites or become dangerous to astronauts. If the tiniest piece of junk crashed into a spaceship, it could damage the vehicle.
To make things worse, when two objects in space crash, they break into many smaller pieces. For example, when a U.S. satellite hit an old Russian rocket in 2009, it broke into more than 2,000 pieces, increasing the amount of space junk.
To reduce additional space junk, countries have agreed that all new space tools can only stay in space for 25 years at most. Each tool must be built to fall safely into the earth's atmosphere after that time. In the upper parts of the atmosphere, it will burn up.
Many scientists also suggesting different ways to clean up space junk. In England scientists are testing a metal net that can be fired into space junk. The net catches the junk and then pulls it into the earth's atmosphere to burn up. The Germans are building robots that can collect pieces of space junk and bring them back to Earth to be safely destroyed.
The problem is becoming more challenging because we're sending more objects into space to help people use their mobile phones and computers,” says Marco Castronuovo, an Italian space researcher.“The time to act is now. The longer we leave the problem, the bigger it will become,” he says.
( )1．What does the underlined word “these” in Paragraph 2 refer to
A．Telescopes. B．Satellites. C．Pieces of space junk. D．BBC news reports.
( )2．Why is space junk considered a problem
A．It buns up after it re-enters the atmosphere B．It often stops the view of telescopes on Earth
C．It could force new space tools to travel at slower speeds
D．It may crash into other space tools causing damage or death
( )3. Countries want future space tools to be able to fall back into the earth's atmosphere so that_______.
A．the tools can be reused later B．the tools don't become space junk
C．the earth’s atmosphere can stay clean D．the effects of space flight can be studied
( )4．How do the Germans plan to deal with space junk
A．Catch it with nets. B．Use robots to collect it.
C．Burn it in the earth's atmosphere. D．Send it further away from the earth.
( )5．In which section of the newspaper would you probably read this article
A．Environment. B．Local News. C．Education. D．Fashion.
四、阅读还原。
How's it going Sorry I haven’t been in touch for a while, but I couldn't use my computer for a few days. You'll never guess what happened to me!
A couple of weeks ago, I decided to take up yoga. Yoga is combination of physical and breathing exercises. 1 . I've been feeling a bit stressed about my school work recently and I thought yoga might help. My dad couldn't give me a lift to the first lesson, so I decided to go to the gym by bike. The lesson was great and I felt really relaxed afterwards. 2 . The next day, I woke up with a bad cold. I couldn't stop coughing and sneezing. I couldn't go to school. because I also had a high temperature. We were having a maths test that day so it was great that I could stay at home. I didn't really enjoy my day off though. I felt awful and stayed in bed. Mum brought me cups of hot tea for my sore throat and you know how much I hate tea 3. I have to keep taking these for a while so I can get stronger.That afternoon Robbie came to visit me. He said he’d got something to cheer me up and pretended it was the math test that I missed. "Mr Banks says do it at home instead ,”he said , but I knew he was joking. 4. . The next day, I was a bit pale and didn't have much energy, but I was feeling better. The day after that, I was able to go back to school.Can you believe my luck 5. .Anyway, you're OK. Write and let me know what you've been up to! Bye for now!
Kate
A .She also went to the chemist’s and got me some vitamin pills. B. On the way home , though, it started raining and I got very wet. C. When I was going home, I fell off the bike and hurt my leg. D. I didn’t think it was very funny, but he did! E. It’s supposed to be good for relaxation and keeping fit.
五、短文填空。
We had a chemistry class yesterday.We learned about the importance of 1 our environment.Mr. Zhao told us that he was very worried about the 2 in our city. He said that our city used to be beautiful. People could enjoy the beauty of 3 , such as green mountains，clean water and fresh air. But in recent years the beauty has gone．
In public places, we can see some people drop litter, spit and draw casually on walls. All of these are bad 4 our environment. As middle school students, we should try our 5 to do something to protect the environment. For example, we can pick up waste paper on the ground and throw 6 into the dustbin（垃圾箱）.
Pollution is not only the problem of our city, but also the problem of our 7 and even in the world. It’s everyone’s 8 to protect the environment, 9 we have only one earth.We should do it from every small thing around 10 . Then we will make our earth more beautiful and cleaner.
2. 3. 4. 5.
6. 7. 8. 9. 10.
参考答案
**第二课时Section A（3a ~ 4c）**
一、根据句意及所给汉语提示，用恰当的短语填空。
1. took part in
2. pay for
3. took action
4. on the food chain
5. cut off
二、完形填空。
1. C. very little
2. D. become
3. D. because of
4. D. millions of
5. B. bigger
6. A. used
7. B. find out
8. B. cut
9. A. also
10. C. built
三、阅读理解。
1. C. Pieces of space junk
2. D. It may crash into other space tools causing damage or death
3. B. the tools don't become space junk
4. B. Use robots to collect it.
5. A. Environment.
四、阅读还原。
1. E. It’s supposed to be good for relaxation and keeping fit.
2. B. On the way home, though, it started raining and I got very wet.
3. A. She also went to the chemist’s and got me some vitamin pills.
4. D. I didn’t think it was very funny, but he did!
5. C. When I was going home, I fell off the bike and hurt my leg.
五、短文填空。
1. protecting
2. pollution
3. nature
4. harm
5. best
6. it
7. world
8. duty
9. because
10. us
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