More than 30,000 drivers and passengers who sit in the front of the vehicles are killed or seriously injured each year. At a speed of only 30 miles per hour it is the same as falling from a third-floor building. Wearing a seat belt saves lives: it reduces your chance of death or serious injury by more than a half.
Therefore drivers or front seat passengers over 14 in most vehicles must wear a seat belt. If you do not, you will be fined up to ￡ 50. It will not be up to the drivers to make sure you wear your belt. But it will be the driver's responsibility to make sure that children under 14 do not ride in the front unless they are wearing a seat belt of some kind.
However, when you're reversing your car, you do not have to wear a seat belt; or when you are making a local delivery or collection using a special vehicle; or if you have a valid medical certificate which excuses you from wearing it. Make sure these circumstances apply to you before you decide not to wear your seat belt. Remember that you may be taken to court for not doing so, and you may be fined if you cannot prove that you have been excused from wearing it.

单选题 How many people in the front of the vehicles are killed or seriously injured every year?

单选题 Wearing a seat belt in a vehicle______.

【正确答案】 C

【答案解析】在车上系安全带：reduce your chance of death or serious in—jury by more than a half系安全带可以减少50％的死亡率或重伤几率。选项A：不是公路事故而是死亡率或重伤几率。选项B：以30公里／小时开车时能挽救人的生命。与文章不符，本文是说30公里/小时以上必须系安全带。选项D：每年挽救15，000人的生命。

单选题 It is the driver's responsibility to______.

【正确答案】 B

【答案解析】从第二段最后一句话可知：But it will be the driver's re—sponsibility to make sure that children under 14 do not ride in thefront unless they are wearing a seat belt of some kind。