At one point along an open highway,I came to a crossroads with a traffic light.I was alone on the road by now,but　 1　 I drove up to the light,it turned red,and I braked to a halt.I looked left,right,and behind me.Nothing.　 2　 a car,no suggestion of headlights,but there I sat,　 3　 (wait)the light to change,the only human being for at least a mile in any direction.

I started wondering　 4　 I refused to run the light.I was not afraid of　 5　 (catch)by the police,because there was obviously no cop anywhere around and　 6　 certainly would have been no danger in going　 7　 it.

Much later that night,the　 8　 question of why I^,d stopped for that light came back to me.I think I stopped because it^,s part of a contract(合同)we all have with each other.It?s not only the law,but it^,s an agreement we have,and we trust each other to honor　 9　 :We don?t go through red lights.Like most of us,I^,m more ready to be stopped from doing something bad by the social agreement that disapproves of it　 10　 by any law against it.　

The world　 1　 (run) out of oil and energy experts believe that there could be serious shortages in ten years time.Not only is each individual using more oil than ever before，as the standard of living in industrialized countries rises，but the population　 2　 (explode) means that each year　 3　 more people will be using oil in some form

?　 4　 other.Until recently we took oil for　 5　 (grant) : it seemed it would never stop flowing.It was so cheap and plentiful that the whole world came to depend on it.Government neglected other sources of energy: electricity was generated　 6　 oil and power stations were fired by it.It found its way into many of the products of light industry.Many people are surprised　 7　 they learn how many items in their homes contain oil.

The increase in the price of oil has brought the world to its senses.Governments are searching for a suitable alternative，?　 8　 so far in vain.They are considering　 9　 they can make better use of the two other major fuels，coal and natural gas，but they have found that　 10　 can take the place of oil in their economies.　

When you start talking about good and bad manners you immediately start meeting difficulties.Many people just cannot agree　 1　 they mean.We asked a lady，who replied that she thought you could tell a well-mannered person　 2　 the way they occupied the space around them.However,　 3　 second person thought that this was　 4　 a question of civilized behavior than good manners.Instead，this other person told us a story about an American who　 5　 (invite) to an Arab meal in one of the countries of the Middle East.The American hadn^,t been told much about the kind of food he might expect.　 6　 he had known about Arab food，he might have behaved better.Immediately before him was a very flat piece of bread that looked，to him，very much like a napkin.　 7　 (pick) it up，he put it into his collar，so that it fell across his shirt.His Arab host，who had been watching，said nothing，　 8　 immediately copied the　 9　 (act) of his guest.And that，said　 10　 second person，was a fine example of good manners.