阅读理解。 Excused from recycling (回收利用) bec

题目：

阅读理解。

     Excused from recycling (回收利用) because you live in a high rise with a rubbish chute (垃圾道)?

You won't be for long. Miami's Mark Shantzis has made it simple for those living in tall buildings to use

the chute and recycle too.

     In Shantzis' Hi-Rise Recycling System, a chute leads to a pie-shaped container with six boxes that

can turn around when operated. The system, which fits in the same space as the chute and container now

in use, enables glass, plastic, paper, metal, and other rubbish to go into separate boxes.

     The system is controlled from a board next to the chute door. The board has a button for each class

of recycling materials (as well as for unrecyclables).At the press of a button, a microcomputer locks all

other floors' chute door and sets the recycling container turning until the right box comes under the chute.

The computer also counts the loads and gives a signal by phone when the box is full. And a particular

piece of equipment breaks up the nonrecyclables.

     Sorting (分类) recyclables before they are collected saves the use of expensive materials recovery

equipment which otherwise has to do the sorting. Such equipment often makes recycled materials very

expensive, so expensive that tons of recyclables remain wasted. Shantzis believes his system could help

recycled materials become more cost-effective.

1.The purpose in writing this text is _________.

A. to encourage people to recycle their rubbish

B. to explain the need for rubbish collection in high rises

C. to describe the use of computer technology in recycling

D. to introduce a recycling system for high rises    

2. When he says "You won't be for long", the writer means that ________.

A. you'll soon be living in a cleaner building

B. rubbish chutes will become out of date before long

C. it won't be long before you'll have to recycle your rubbish

D. you won't wait long for your turn to recycle rubbish

3. Before dropping rubbish into the chute you have to _________.

A. press the correct button

B. check if the container is full

C. lock the other floors' chute doors      

D. break up the rubbish

4. The biggest advantage of this new system is that __________.

A. it makes better use of the existing recovery equipment

B. it saves time and space

C. it saves money for people living in high rises          

D. it reduces the cost of recycling