Emergencies (紧急情况) don't happen very often. But when they do you want to get help first. No one wants to spend time looking up the phone numbers. In 1967 the United States government wanted one number that people could call for emergencies. They decided that 911 was easy to remember and people could dial it quickly. The very first 911 call was made on February 16 1968 in Alabama. Today 911 is used for emergencies in most parts of the United States and many parts of Canada. Other countries may use other numbers. In Great Britain it's 999. If you’re not sure which emergency number is used in your area check your phone book. When to call Never call 911 as a joke or just to see what might happen. The only time you should call 911 is when a person is badly hurt or in danger right now!So call when there is a fire a car accident or sudden sickness etc. When in an emergency call When you dial 911 it's always OK to give out your information. Speak slowly and clearly when you explain what's happening. What happened? Where are you? Who needs help? Don’t hang up (挂断) ！ If you have to call 911 do not hang up until the operator (接线员) tells you it's OK to do so. That way you can be sure that the operator has all the information to offer help fast. A dog named Faith dialed 911 when her owner who was in a wheelchair fell and needed help. She had been taught to use a speed-dial (快速拨号) function. 49. The emergency number 911 was first used in____ in the USA. A. 1958 B. 1968 C. 1978 D. 1999 50. Why was 911 chosen to be the emergency number?____ A. Because other countries also used the number. B. Because it was suggested by the phone pany. C. Because it was simple and easy to remember and dial. D. Because it was also used in many parts of Canada. 51. Which is the right thing to do?____ A. Wait for the operator's words to end the call. B. Tell the operator what has happened and hang up. C. Test if your phone can get through to 911. D. Tell the operator everything as quickly as possible.
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【答案】 49. B 50. C 51. A[阅读C篇短文大意]发生紧急情况时，人们需要拨打报警 电话。文章主要介绍了美国报警电话911的一些情况。49. B 由第二段中的The very first 911 call was made on February 16. 1968.in Alabama可知，美国报警电话911是在1968 年被首次使用的。50. C 由第二段中的” They decided that 911 was easy to remember and people could dial it quickly可知应选C.51. A 由文中的If you have to call 911.do not hang up until the operator (接线员) tells you it's OK to do so可知 A 项正确。