题目内容：

We’ve all done it at one point or another. You’re driving along to work or school when that familiar sound reaches your ear. You look down, reach into your pocket and begin to read, your steering wheel(驾驶盘) in one hand, your phone in the other. What can go wrong?

What do you think is the number one killer of teens in the U.S.? Drugs? Alcohol? Violence? The answer is “distracted driving(分心驾驶)”. According to a study, over 24 percent of all motor vehicle(车辆) crashes involve(涉及) cellphone use. What’s more, drivers who talk on a cellphone are four more times likely(有可能的) to crash.

When you’re a teenager, the risk of getting into an accident rise. According to the study, more than 3,000 teens die in car accident each year, with about another 450,000 teens being injured. Besides, one text message is equal to 0.08 alcohol level. In most states, that is considered drunk driving. When you’re a teen, it may seem that this weekend’s party is the most important thing going on in your life right now, but anyone would agree that being alive is more important.

So, how do you protect yourself from the dangers of distracted driving? Put your phone away. Put it silent or just turn it off completely while driving. If someone is trying to reach you, you can have a better conversation with them when you’re not doing 60mph down the freeway. If you don’t trust yourself not to use your phone, put it on the back seat.

You may get out with talking on the phone now, but there may be a day when you don’t. Not using your phone may be an inconvenience, but it’s better to be safe while driving.

1. What is the author’s purpose in writing the first paragraph?

A. To tell people about the wide use of cellphone.

B. To advise people to answer the phone while driving.

C. To introduce the topic of distracted driving.

D. To tell people how to be good drivers.

2. According to the study, when driving are four times more likely involved in car accident?

A. people who talk on a cellphone

B. people who quarrel with others

C. people who are drunk 

D people who think about things

3. How can we protect ourselves from the dangers of distracted driving?

①Turn the phone off.   ②Talk on the phone while driving at over 60mph on the freeway.

③Put the phone on silent.  ④Put the phone on the back seat.

A. ①②③ B. ①③④ C. ②③④ D. ①②④

4. What is the main idea of the passage? 

A. The wide use of cellphone among teenagers.

B. The causes of car accidents.

C. The dangers of using phone while driving.

D. Ways to avoid car accidents.