A few minutes ago, walking back from lunch, I started to cross the street when I heard the sound of a coin dropping. It wasn’t much but, as I turned, my eyes caught the heads of several other people turning too. A woman had dropped what seemed to be a dime（十美分硬币）.

       The sound of a coin dropping on the street catches everybody’s attention. Whatever the coin is, no one ignores（忽视）the sound of it. It got me thinking about sounds again.

       There are so many sounds that catch the most attention. People in New York City seldom turn to look when they hear the siren（警报）of a police car or an ambulance（救护车）.

       When I’m in New York, I’m a New Yorker. I don’t turn either. I hardly hear a siren there.

       At home in my little town in Connecticut, it’s different. The faraway high sound of a police car, an ambulance or a fire siren brings me to my feet if I’m sitting and brings me to the window if I’m in bed.

       It’s the quietest sounds that catch our attention most easily, not the loudest. In the middle of the night, I can hear water dropping a hundred yards away through three closed doors. I’ve been hearing little creaking（吱嘎）noises and sounds in the middle of the night for twenty-five years in our house. Why do I never hear those sounds in the daytime?

1. The sound of a coin dropping made people _______.

   A. think of money                                              B. shout aloud

   C. pay attention to it                                    D. look at each other

2. People in New York _______.

   A. are used to sirens                                    B. don’t hear loud noises

   C. are interested in sounds                           D. don’t care about quiet sounds

3. The writer _______.

   A. has a bad hearing                                    B. stays up late at night

   C. comes from a little town                         D. sleeps next to the window

4. The last paragraph（段落）tells us that _______.

   A. the writer thinks a lot at night                   B. water should be turned off at night

   C. the sounds at night make the writer afraid  D. the quietest sounds at night are easily heard

A smile costs nothing, but gives so ______.

    A. little               B. few          C. many             D. much

A smile costs nothing, but gives so ______.

    A. little               B. few          C. many             D. much

A smile costs nothing, but gives so ______.

  A. little             B. few              C. many             D. much

 

Many young people can use the computer, but few of them know how to look after them．

Remember the following when you use the computer．

Keep your computer in a cool, dry room．Too much or too little heat is bad for computers．Damp is also bad for them．Most computers work best at a temperature of 5-30 degrees centigrade．Computer, just like some people, may prefer（更喜欢）autumn to （比起） summer and winter．Do not let people smoke cigarettes near your computer．Smoke of all kinds is very bad for many parts of a computer and can cause many problems．

Do not eat or drink when you are near your computer． Pieces of food and a little water in the keyboard can also cause many problems．

Make sure that the keyboard and the screen （键盘与屏幕） are the correct height for you．If they are not correct, you'll get backache．

Make sure the screen is the correct distance from your eyes．If you wear glasses, make sure these glasses are correct for using with the computer．Some people use a different pair of glasses when they use a computer．

Keep your screen clean and do not have it too bright．A dirty screen can hurt your eyes．A very bright screen can also be bad for your eyes．If you can afford one, buy a computer screen．It will be better for you than using the screen of a TV set．

1．According to this passage （根据文章）, ____________

A．more and more people can use computers and take care of them．

B．fewer and fewer people know how to the protection of the computers nowadays．

C．many young people can use computers but few of them know how to look after them．

D．Most computer lovers are fond of eating their food while playing computer games．

2．Computer, just like some people, may prefer__________

A．autumn to summer and winter                   B．neither winter nor summer or autumn

C．summer to winter and autumn                   D．both summer and winter

3．Putting the keyboard and screen too high means you ____________

A．will get backache．

B．will have a headache．

C．don't have to look at your manuscript （稿件） while typing

D．are hard-working

4．Some people use a different pair of glasses when they use a computer because they want to______

A．protect the computer

B．prevent （ 防止） their eyes being hurt（被伤害）

C．make them look cool

D．show off（炫耀） his glasses

5．Which is NOT true according to the passage?

A．If the height of the screen isn't correct, you'll get backache．

B．Smoking is bad for a computer and is one of the cause of many problems．

C．You can eat or drink when you are near your computer．

D．Make sure the screen is the correct distance from your eyes．