八年级英语下册学习辅导资料-第三章-练习题

2017-07-04 09:44

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课后测试题

Ⅰ.Choose the best answer (选择最佳的答案)：

1. Benny is going to buy ________.

A. some electricities B. an electricity C. a packet of electricity D. two packets of electricities

2. Some rich men like to ______ their treasure under the ground in order not to let others know it.

A. buried B. bury C. are buried D. to be buried

3. Everyone must be ________ electricity.

A. care to B. careful to C. careful with D. careful for

4. We can ________ forms of energy that we can see, hear or feel.

A. change them to B. change it to C. change them into D. change it into

5. Don‟t forget ________ the light before you leave the house.

A. to turn on B. to turn off C. turning on D. turning off

6. He‟s ________ electrician, he can deal with the ________ problem.

A. a, electrical B. an, electrical C. the electrical D. the, electric

7. These ________ thick wires that are buried under the street.

A. connect to B. connect with C. are connected D. are connected to

8. Jane saw a bank robbery ________.

A. on her way to there B. on her way back home C. in her way home D. at the way to home

9. Anyone can answer that question, ________?

A. can he B. can‟t they C. can‟t he D. doesn‟t he

10. —Can I leave this door open at night? —You ________ better not.

A. should B. would C. could D. had

11. John ________ come to see us tonight, but he isn‟t very sure yet.

A. may B. can C. has to D. must 12. They ________ do well in the exam.

A. can be able to B. be able to C. can be able D. are able to

13. You ________ be late for school again next time.

A. mustn‟t B. needn‟t C. don‟t have to D. don‟t need to

14. —Must I do my homework at once? —No, you _________.

A. needn‟t B. mustn‟t C. can‟t D. may not

15. My brother always _________ his head when he‟s in trouble.

A. hits B. knocks C. scratches D. washes

16. Water changes ________ ice when it‟s frozen

. A. in B. to C. into D. onto

17. The father ________ the toy box under a tree and asked the children to look for it.

A. put B. buried C. laid D. set

18. Jane is a shy girl. She always ________ but seldom speaks.

A. grins B. laughs C. joke D. smiles

19. Oh, my god! Our light is broken. Let‟s change the _________ quickly!

A. cable B. bulb C. wire D. battery

20. Which one can produce movement energy?

A. A radio B. A torch C. A fan D. A kettle

Ⅱ.Choose the right words to complete the sentences (选择适当的单词完成句子)：

1. Playing with fire is very ________. (danger, dangerous)

2. Cables are connected ________ a power station. (with, to)

3. Everyone ________ keep quiet in the library. (must, can)

4. You need ________ energy to play squash. (a lot of, many)

5. We get electricity from power station ________ wires and cable. (through, across)

Ⅲ.Fill in the blanks with the words in the box in their proper forms (用方框中动词的适当形式填空)：

trick bury explain connect

1. “I didn‟t catch the six fifty bus this morning, sir.” Sandy ________ why he was late for school.

2. Captain King ________ Gork‟s friends now.

3. My mobile phone is ________ to my computer to come on line.

4. My father ________ my grandpa personally. We all felt very sad at that time.

Ⅳ.Rewrite the sentences as required (按要求改写句子)：

1. Grandpa doesn‟t even know What WTO is. （写出同义句） Grandpa doesn‟t know what WTO is ________ ________.

2. Where are we going next? I forget it. （合并成一句） I forget where ________ ________ next.

3. Tony is so fat that he can‟t jump high. (写出同义句) Tony is ________ fat ________ jump.

4. Gork‟s eye is red, glowing and huge. (对划线部分提问) ________ ________ Gork‟s eye?

5. Everyone likes to be visited late at night. （改为否定句） ________ ________ like to be visited late at night.

Ⅴ.Cloze (完形填空)：

Scientists have ____1____ wanted to know more about the universe. Years ago they know many things about the moon. They knew how big it was and how far away it was from the earth. But they wanted to know ____2____ about it. They thought the best way ____3____ men to the moon.

The moon is about 38,400 kilometers away from the earth. A plane cannot fly to the moon because the air ____4____ only 240 kilometers away from the earth. But ____5____ can fly even when there is no air. That is a rocket.

1. A. ever B. never C. always D. already

2. A. much B. more C. many things D. a lot

3. A. to send B. to take C. to carry D. to have

4. A. is B. are C. travels D. reaches

5. A. it B. that C. something D. someone

Ⅵ.Reading comprehension (阅读理解)：

Most of our energy come from burning coal, oil or gas. But what will happen when we run out of those things? We‟ll have to find other ways to get energy. Here are some types of energy that we‟ll needto use more of one day:

Solar energy: Solar technology uses energy from sun‟s light. Solar cells like silicon(硅) can take in sunlight and turn it into electricity. Small solar cells are used in things like calculators. Bigger ones can be used to light houses or heat building.

Hydro energy: This is sometimes called hydroelectric（水电的）energy. The name comes from the word “hydrogen(氢)”, which is found in water. When water moves fast, it has lots of energy. When moving water goes through hydroelectric dams, it turns a turbine (涡轮), and the turbine turns a generator(发电机). China is now building the world‟s largest hydroelectric dam at Three Gorges(三峡).

Nuclear energy: This kind of energy is not renewable, but it is more efficient to make than fossil fuel energy. We get nuclear energy by putting uranium or plutonium into a nuclear reactor (核反应堆). That‟s a big machine that breaks atoms apart. When atoms break, lots of heat comes out. This heats up water to make steam. The steam turn a turbine., which then turns a generator to make electricity, much like in a hydroelectric dam.

Answer the questions (根据短文内容，回答问题)：

1. What can bigger solar cells be used for?

They can be _________________________ or ___________________________________.

2. Which dam will be the largest hydroelectric one in the world?

_________________________________________________________________________.

3. How can we get nuclear energy?

We can get it by ___________________________________________________________.