This English song by his mother at home.A. often sings B. often sang C. is often sang D. is often sung 题目和参考答案——青夏教育精英家教网—

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This English song _______ by his mother at home.

A. often sings B. often sang C. is often sang D. is often sung

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—I still haven't found my pet dog.

—I'm sorry to hear that. You ________ be very sad.

A. can B. should C. will D. must

Car accidents happen everywhere every day and are the main cause of injury in the United States. In order to control the increasing accidents, many states have passed tough laws. Also, car manufacturers(生产商) have been trying to make safer cars to save lives.

However, as there are more and more cars and drivers on the road, these safety measures are not enough to stop the increasing car accidents. The National Highway Traffic Safety Administration(管理部门) reports that a car accident happens every 10 seconds in the United States.

Car accidents may be caused by different reasons. Some accidents are caused by the driver's tiredness and illness or drunk driving. Some may be caused by speeding or running a red light. When this happens, by the time the driver realizes what has happened, it is usually too late. As for ages, young drivers usually don't have enough experience while elderly drivers react slowly. Mechanical defects(机械缺陷) such as a broken brake(刹车) are another cause of car accidents. Poor road and weather conditions can also be causes.

Talking about different causes of car accidents can help us know what precautions(预防措施) to take beforehand. We should tell our friends or family members not to drive in poor health or after drinking wine. We should tell teenage drivers to be careful with road and weather conditions and let elderly friends understand their driving limitation. Besides, we should have our cars checked regularly(规律地). The most important thing for us to remember, however, is that we should always follow the traffic rules.

1.What has the government done to try to control the increasing car accidents?

A. They try to make safer cars.

B. They try to build more roads.

C. They have passed tough traffic laws.

D. They make drivers have their cars examined every month.

2.What does the underlined word “elderly” possibly mean?

A. Middle?aged. B. Young.

C. Rather old. D. Teenage.

3.Which of the following causes is different from the other three?

A. Tiredness. B. Illness.

C. Drunk driving. D. A broken brake.

4.Which has nothing to do with a driver's age?

A. Teenage drivers.

B. Not knowing the traffic rules.

C. Reacting slowly.

D. Driving experience.

5.In order to avoid accidents caused by mechanical defects, we should ________.

A. ．not run a red light

B. drive the car when we are in good health

C. not drive when we are too old

D. have our cars examined regularly

—Why were you late for school this morning?

—Because my alarm clock didn't go off and I ________.

A. overslept B. completed C. changed D. missed

He _____ the book everywhere and _____ it under his bed in the end.

A. found; looked for B. looked for; looked for

C. found; found D. looked for; found

Your ears allow you to hear many different sounds.Some sounds can be pleasant to hear and some are not so pleasant.The louder the sound and the longer you listen to it，the more possible it is to cause damage(损害) to your hearing.

Some sounds not only harm your hearing，but also can make it hard to pay attention while reading or doing homework and prevent you from falling asleep.It is important that you learn about sound and how to identify(辨认) when it is harmful to you.

Sound is measured in units called decibels(分贝)．The greater the number of decibels，the louder the sound and the more harmful it is to your ears.The sound at 85 decibels and above may harm your hearing.

Nowadays，noise pollution is more and more serious，so you should try to protect your hearing.

◇ Turn down the TV，video game，radio，and music player.

◇ Walk away from sound that is too loud.

◇ Wear hearing protectors when needed.

1.What can we learn from the first paragraph?

A. There are two different sounds.

B. All the sounds are pleasant to hear.

C. Some sounds can damage your hearing.

D. It is good for you to listen to louder sounds for a long time.

2.Harmful sounds can ________.

①damage your hearing

②stop you from falling asleep

③keep you from having dinner

④prevent you from paying attention to doing homework

A. ①②③ B. ①②④

C. ②③④ D. ①③④

3.The sound at ________ is harmful to your hearing.

A. 0 B. 60 C. 80 D. 120

4.The sound of ________ is about 140 decibels.

A. busy city traffic B. washing machines

C. rocket launch D. fireworks

5.Which of the following is helpful to protect your hearing?

A. Turning up the music player.

B. Staying in a quiet place.

C. Attending a rock concert.

D. Walking on a busy street.

I want to be an astronaut in the future so that I can do ________ research in the space station.

A. funny B. reusable

C. scientific D. unexpected

It was such an ________ joke that everyone felt really ________.

A. embarrassing；embarrassed

B. embarrassed；embarrassing

C. embarrassed；embarrassed

D. embarrassing；embarrassing

Something special happened ________ Mary ________ the first day of school.

A. at；on B. to；on C. with；in D. about；in

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