阅读理解。
What do people do with their old, out-of-date but still useful computers?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.
Finally, some companies are thinking of ways to bring down the number of old computers. Sony
has agreed to help recycle old Sony products（产品）, 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 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）.
Yet while many people are throwing away good computers, others cannot afford them at all.
Hundreds of organizations（组织）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（慈善团体）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.
1. What do many people do with old computers?
A. They repair them.
B. They sell them.
C. They send them to others.
D. They stop using them.
2. What do the organizations do to solve the problem of old computers?
A. Help the computer companies to collect them.
B. Repair and send them to those who need them.
C. Help people to learn to use them.
D. Turn rubbish into useful things.
3. What is the main idea of this passage?
A. Repairing old computers.
B. Encouraging to make cheap computers.
C. Recycling old computers.
D. Helping those who need computers