问题补充：
What do people do with their old, out-of-date but still useful computers? Most people don’t know what to do with them. Many old computers are put away in homes. Many more are simply thrown out with the rubbish.
Some companies are thinking of ways to bring down the number of old computers. Sony has agreed to help recycle old Sony products. Dell, Hewlett-Packard and other companies now also take back some old computers.
In some countries, laws are being passed, too. Computer companies will have to collect and recycle their used products. And 70% of computer waste must be recycled. The idea behind the laws is that computer companies themselves should pay the cost. That will encourage them to make computers that are easier and cheaper to repair and upgrade（升级）.
Yet while many people are throwing away good computers, others cannot afford them at all. Hundreds of organizations are working to solve this problem. They collect and repair old computers. Some also teach others how to repair computers.
The computers then go to schools, charities and people who need them. Giving a used computer to one of these organizations can turn one person’s rubbish into someone else’s useful things—and cut down on waste, too.
【小题1】 How do people usually deal with their old computers?
A. They stop using them. B. They give them to others. C. They fix them up.
【小题2】 What do some computer companies do to bring down the number of old computers?
A. They don’t do anything about them.
B. They take back some old ones.
C. They donate them to some charities.
【小题3】According to some countries’ laws, what must computer companies do?
A. Collect and recycle most of computer waste.
B. Repair and upgrade old computers.
C. Make much cheaper computers.
【小题4】 What may people who can’t afford computers think of the used computers?
A. Expensive. B. Useful. C. Out-of -date.
【小题5】 What is the passage about?
A. Repairing old computers.
B. Selling old computers.
C. Recycling old computers. A
答案：
(答案→)A
解析：
【小题1】细节理解题，根据文中语句“Most people don’t know what to do with them. Many old computers are put away in homes. Many more are simply thrown out with the rubbish.”理解可知。许多旧电脑都被搁置了起来，故选A。
【小题2】细节理解题，根据文中语句“Sony has agreed to help recycle old Sony products（产品）. Dell, Hewlett-Packard and other companies now also take back some old computers.”理解可知电脑公司收回旧电脑来减少旧电脑的数量。故选B。
【小题3】细节理解题，根据文中语句“In some countries, laws（法规）are being passed, too. Computer companies will have to pay for collecting and recycling their used products. And 70% of computer waste must be recycled. The idea behind the laws is that computer companies themselves should pay the cost. That will encourage them to make computers that are easier and cheaper to repair and upgrade（升级）.
”理解可知。电脑公司必须回收和升级他们的旧产品。故选A。
【小题4】细节理解题，根据文中语句“They collect and repair old computers. Some also teach others how to repair computers. The computers then go to schools, charities（慈善团体）and people who need them.”理解可知。那些想用电脑而又买不起的人来说旧电脑是有用的，故从B。
【小题5】细节理解题，根据文中语句理解可知，本文的主要内容就是回收利用旧电脑，故选C。。
