题目内容：

Last week was Road Safety Week at Jason's school. All the students had to take part in a talk on road safety which was given by a police officer. The following is what the police officer said. “Most traffic accidents shouldn't happen. They happen because people are careless. A frequent cause of traffic accidents is speed. Some people drive too quickly. This means that if they have to stop suddenly, they cannot stop quickly enough to avoid （避免）hitting other vehicles （车辆）or people. You need to remember this when you are crossing the street or walking along the sidewalk.”

“It's not only drivers who cause accidents, however. People on foot－pedestrians, and bicycle riders often cause accidents, too. Pedestrians sometimes walk out into the street without looking. You should always look on both sides before stepping into the street. ”

“Do any of you ride a bike? Bicycle riders can cause accidents by changing directions suddenly or without warning other road users. Before you turn left, for example, you should check behind you to make sure there aren't any cars, trucks or buses coming. You should show with your left hand to tell that you want to turn left. You should not turn until the street is clear. ”

“The rules of the road are very simple. If we learn them and obey （遵守）them, we should not have accidents any more. ”

1.The main idea of the story is _______.

A. obeying the rules of the road can keep you from having accidents

B. it was Road Safety Week at Jason's school

C. it's not only drivers who cause traffic accidents

D. some people have accidents because they drive too quickly

2.Why do most traffic accidents happen?

A. Because people stop their cars suddenly.

B. Because people don't know the rules.

C. Because people don't care if they have an accident.

D. Because people are careless.

3. How can bicycle riders cause accidents?

A. By crossing the road without warning other road users.

B. By turning suddenly or without warning other road users.

C. By making sure there aren't any cars coming.

D. By showing suddenly or without warning other road users.

4.The underlined word “frequent” in the passage means ________ in Chinese.

A. 频繁的       B. 偶尔的

C. 所有的      D. 罕见的

5. Which of the following is the best title of this passage?

A. Road Safety Week

B. A Talk on Safety

C. Safety First

D. Safety and Accidents