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 1568, the Untied 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 Alibama. 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 959. 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

When in an emergency call
When you dial the 911 operator(接线员)，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 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(快递拨号)function.
The emergency number 911 was first used in ____ in the USA.
A. 1958   B. 1968  C. 1978   D. 1999
Why was 911 chose to be the emergency call?

A．Because other countries also used the number.

B．Because it was suggested by the phone company.

C．Because it was simple and easy to remember and dial.

D．Because it was also used in many parts of Canada.

People can’t call 911 when ____.

A．a bus hits a boy badly

B．a girl feels bored

C．an old lady falls off the stairs, unable to stand up

D．some people can’t get out of a burning building

Which is the right thing to do?

A．Wait for the operator’s words to end the call.

B．Tell the operator what his happened and hang up.

C．Test if your phone can get through to 911.

D．Tell the operator everything as quickly as possible.

Which is NOT true according to the passage?

A．911 is an emergency number almost throughout the United States.

B．We haven’t got a worldwide universal(通用的)emergency number yet.

C．Usually phone books list emergency call numbers.

D．The dog Faith pressed the three numbers 9—1—1.

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