（二）

Scientists are developing a new kind of machine to take the place of humans. These machines can do jobs in places that are too dangerous for humans. For example, they are being developed to work in nuclear power center, deep under the oceans and in outer space.

John Marrit, a psychologist(心理學(xué)家) in Williamsburg Massachusetts, helped develop the new machine. This is how they work. A machine is placed in an area far away from the person who operates it. The person wears special hard hat with television screens and sound equipment. The screens and sound equipment let the person see and hear exactly what the machine is seeing and hearing. Mr. Marrit says this gives the person the feeling of being in the same place as the machine. The idea, he says, is being there without going there. The person uses an electronic control to make the machine move. The machine copies the person’s movements exactly. If the person raises his right arm, the machine raises the right arm, too. This means an expert can do a dangerous job while staying in the safe place. For example, a person can direct the machine to destroy a bomb without going near the bomb himself.

1. The new kind of machine being introduced in the passage is _______.

A. in existence B. only an idea

C. being tried out D. being researched and developed

2. The machine _______.

A. follows the person’s order

B. is controlled by a computer

C. does exactly what the person does

D. is controlled by a television on the person’s head

3. The difference between such a new machine and a robot is that _______.

A. the new machine is more difficult to make than a robot

C. a robot is controlled by man indirectly

D. a robot can’t be used in places too dangerous or faraway

【答案與解析】科學(xué)家正在開發(fā)一種代替人的機(jī)器，這種機(jī)器能代替人們從事一些危險(xiǎn)的工作。

1. D。判斷題。從第1句話Scientists are developing a new kind of machine to take the place of humans 可以看出，既然是正在開發(fā)當(dāng)中，那肯定還未形成。

2. C。語(yǔ)義理解題。從第2段中的The machine copies the person’s movements exactly 可以明顯看出為什么選C的原因。A項(xiàng)有一定的干擾性，但這種機(jī)器是人通過電控開關(guān)控制的，所以應(yīng)排除。

3. A。判斷題。這種機(jī)器還在開發(fā)當(dāng)中，而機(jī)器人則有幾十年歷史了，由此可以肯定答案應(yīng)該選A。