Cars are lots of fun, but they could also be dangerous. We have to be careful when we drive them or ride in them.
It's always a good idea to put on your seat belt when you're in a car. Why? Think about this example: You put an egg on a skateboard and give it a push. If the skateboard hits a stone, it will stop, but the egg won't. It will fly through the air, hit the ground and break.
Now, think what would happen if you tied the egg to the skateboard. When the skateboard hits a stone, the egg won't go flying; it will stay safely on the skateboard.
Volvo, a famous Swedish carmaker, was the first to use seat belts in 1849.
Air bags are also very important for car safety, because sometimes a seat belt isn't enough. If the car is going really fast and runs into something, seat belts could even hurt the people who wear them. Most new cars have air bags in front of and next to the seats. When a car hits something, its air bags will come out quickly in less than one second to keep the people inside safe.
【小題1】The passage mainly tells us                  .
A．two important ways to keep safe in carsB．how air bags work to make cars safeC．how seat belts work to make cars safeD．why we must tie the egg to the skateboard
【小題2】The writer gives the example of the egg to _.
A．tell us that eggs are easy to break
B．show how to wear a seat belt
C．show why it's important to wear a seat belt in a car
D．tell us what a skateboard is
【小題3】Seat belts can make us safer because .
A．we are interested in them
B．they can stop us from hitting other cars
C．they can help us stay safely on the seats
D．they are made of strong materials
【小題4】Air bags are important for cars because _.
A．they are made of plastic
B．they can also help us to keep safe in a car
C．they can keep cars running slowly
D．they are put in front of and next to the seats
【小題5】Which of the following is TRUE according to this passage?
A．It won't be dangerous if there are seat belts or air bags in a car.
B．Now most of new cars still have only one air bag.
C．When a car hits something, its air bags will come out a few minutes later.
D．Volvo was the first to use seat belts.

【小題1】A
【小題2】C
【小題3】C
【小題4】B
【小題5】D解析:
文章介紹了駕車(chē)和乘車(chē)時(shí)系安全帶自我保護(hù)的原理，安全氣囊是如何保護(hù)駕車(chē)人和乘車(chē)人安全的。
【小題1】整體理解題通讀文章可知文章介紹了駕車(chē)和乘車(chē)時(shí)系安全帶自我保護(hù)的原理，安全氣囊是如何保護(hù)駕車(chē)人和乘車(chē)人安全的。
【小題2】細(xì)節(jié)理解題通讀文章第二、三段可知由雞蛋系再滑冰板上再碰石頭二雞蛋不破的原理來(lái)告知人們乘車(chē)駕車(chē)系安全帶的重要性。
【小題3】推理判斷題由可知由雞蛋系再滑冰板上再碰石頭二雞蛋不破的原理可知系安全帶可以在作為上處于安全狀態(tài)。
【小題4】細(xì)節(jié)理解題由“When a car hits something, its air bags will come out quickly in less than one second to keep the people inside safe.”可知當(dāng)發(fā)生相撞時(shí)，安全氣囊打開(kāi)同樣起到保護(hù)安全的作用。
【小題5】整體理解題通讀全文由“Volvo, a famous Swedish carmaker, was the first to use seat belts in 1849.”可知。
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