阅读理解。 Young Inventors' Latest Concepts

问题：

阅读理解。

                                                Young Inventors' Latest Concepts

     Students across China, studying in the fields of engineering, science and technology, are developing a

range of inventions that they hope will one day be marketable. Here are three examples from the minds of China's young inventors.

     Foot-Controlled Mouse

     This new kind of mouse is controlled by the feet instead of the hands, to help handicapped people

when surfing the Internet.

     The new device is called a "surf mouse", and looks like a pair of blue slippers. When users press the

slippers with their forefeet, they are clicking the left mouse button; when people press with their heels,

they are clicking the right mouse; when they roll their feet over the slippers, they can view Web pages.

      Dirty Water Filter

     The "pump of life", a filter, can make dirty water drinkable. The pump is over 30 centimeters long and

has a diameter of four centimeters. It has an in-pipe at the top and out-pipe at the end. There are two

main parts: the drive zone to pump water and the material zone to eliminate (去除) harmful substances.

Rain, fish tank water and coalmine water can all be cleaned in the material zone. The invention could be

used for many kinds of disaster relief. Pan told us that water was delivered by helicopters to Wenchuan.

If they had sent water-purifying equipment instead, people could have had more water faster after the

earthquake.

     Transformer Vehicle

     The multi-functional vehicle is named Tranfus. By changing the breadth of tires and the structure of a

car, it can become a motorbike or a luggage carrier. The name Tranfus is a contraction of "transforming

for us."

      Traffic jams can make a driver go crazy. The Tranfus can change into luggage carrier, and users

could walk with it. When started, the roof transforms, turning into a motorbike. But its inventor doesn't

think Tranfus will be on the market soon as some auto companies like it, but none are willing to invest.

1. Who will be most likely to use the Foot-Controlled Mouse?

A. Those who are left-handed.

B. Those absent-minded in classes.

C. Those hoping cheating in exams.

D. Those having disability in hands.

2。 How can users look through Web pages with the Foot-Controlled Mouse?

A. They can force down their forefeet.

B. They can raise their heels.

C. They can roll their feet.

D. They can press their heels.

3. When should Dirty Water Filter be most likely useful?

A. When there is a lack of water because of drought.

B. When there are natural disasters causing clean water shortage.

C. When there are earthquakes in the mountainous areas.

D. When there are too many people in a crowded city.

4. Why CAN'T the Transformer Vehicle be on the market soon?

A. It is only a crazy idea and has no scientifictheory to support it.

B. It is too small to be a car and too big to be a luggage carrier.

C. There are no auto companies offering to invest in it.

D. There are no auto companies showing interest in it.