题目内容
A large number of children ________ standing outside the office when I got there. The number of the children _____ 2,500.
|
A．is; are |
B．is ; is |
C．are ; is |
D．are ; are |
C
【解析】此题考查a number of与the number of的区别。它们修饰名词作主语时，谓语的数是不一样的。a number of为量词短语，表示“许多……”，中心词是这个短语所修饰的复数名词，所以作主语时，谓语动词用复数形式。the number of表示“……的数量”，中心词为number，指的是of后边名词的数量，数量是个抽象概念，因此谓语动词用单数。根据语境的含义可知选择C。
Sam with his friend Helen _______ in Class Three. They are in Class One.
|
A．isn’t |
B．aren’t |
C．wasn’t |
D．weren’t |
Digital cameras are becoming very popular, though some still _____ too much.
|
A．pay |
B．spend |
C．sell |
D．cost |
What do people do with their old, out-of-date but still useful computers?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（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）.
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.How many computer companies are mentioned in the second paragraph？
|
A．One. |
B．Two. |
C．Three. |
D．Four. |
3.According tothe laws in some countries, computer companies must .
|
A．collect and recycle most of their products |
B．collect all their used products |
|
C．repair and upgrade old computers |
D．make more cheaper computers |
4. 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. |
5.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. |
If parents leave their children on own, do you think the home is tidy or untidy when they return?
|
A．they |
B．them |
C．theirs |
D．their |
Tony’s trousers are ____ his twin brother’s. They have the same colour and size.
|
A．different from |
B．the same |
C．similar to |
D．the same to |