Question

阅读理解

　　While the artificial (man－made) hand is considerably less useful than the natural one, there may be some jobs that it can do more efficiently. From time to time we have to do rather difficult jobs and feel that one of our fingers is getting in the way. It is possible that on these occasions a specially designed artificial limb(肢体) would be more efficient.

　　Scientists are now studying ways of increasing the power of the human limb, or rather, of its muscles. A machine under development, known as a “man－amplifier(放大器)” consists of a framework which the operator wears. Every movement he makes is repeated by the steel framework he is wearing, but the power which moves the parts of the frame comes from hydraulic(水力的) motors. If the operator bends down to pick something up, the work is done not by his own weak muscles but by the hydraulic motors, which makes it possible for him to lift 450 kilograms in each hand.

　　Another machine called a “HardiMan” has two arms and hands which repeat every movement of the operator's arms and hands, but with much more strength. In this device(装置) the operator controls the movements directly. But just as the operations of a distant unmanned spaceship circling the moon can be controlled by radio signals, so also such devices could be radio－controlled. An astronaut exploring an unknown planet could send out a robot which would do the job for him and send back information. Will the day ever come when the machine, more powerful than man and controlled by a computer brain, takes over from its human inventor?

1．This passage is mainly about ________.

[　　]

A．the weakness of the human limb

B．the power and strength of the artificial hand

C．the use of robots in industry

D．the operation of the artificial hand in space exploration

2．According to the passage, the artificial hand is ________.

[　　]

A．better than the natural hand and very widely used

B．slower in doing some rather difficult jobs

C．operated by a strong man

D．being tried and tested to help people in some ways

3．In the passage, the writer tells us that a “man－amplifier” and a “HardiMan” ________.

[　　]

A．are both driven by hydraulic motors

B．are both controlled by radio signals

C．move as their operators' hands do

D．make it possible to work without natural hands

4．The advantage of a “HardiMan” over a “man－amplifier” mentioned in the passage is ________.

[　　]

A．it can be controlled from a distance

B．it can work with more strength and pick up more weight

C．it is more powerful and easier to operate

D．it is smaller in size

5．The writer of this passage believes that ________.

[　　]

A．artificial hands can take the place of natural ones in doing certain jobs with greater efficiency

B．man seems powerless in face of machines

C．natural hands cannot be compared with artificial. ones

D．machines will eventually(必定) get out of the control of their human inventors

Answer 1

答案：B;D;C;A;A
解析：

1．B　　此文主要讲述人造手臂的机能和力量。 　　2．D　　表明人造手臂正在被试验，以便在某些方面帮助人做事。文章并不认为人造手臂比自然手臂更好，全文第一句就言明此意。因此A项不可选，B，C项显然不宜。 　　3．C　　两种机械手臂都是随着操作者手的运动而动，而不是不用自然手臂。 　　4．A　　两种机械相比，HardiMan的优越之处是可远距离操纵，在文章第三段第三句讲明此意。 　　5．A　　作者相信，人造手臂在某些方面能代替自然手臂以更高的效率工作。全文最后一句言明此意。take over即“接管过来”，表明可代替人的一些工作。