Question

Scientists would like to place a huge mirror in space above the earth. It might be sixty miles wide. It would be used to catch the rays (光线) of the sun. It would direct the sun’s rays upon the earth as a child might do to make sunlight dance on the wall with a hand mirror.

Why do they want to do this? The sun’s rays could be helpful in many ways. They could light up cities by night. The warm rays could stop frosts (霜冻) which might come at night and hurt fruit crops. They could melt (融化) dangerous icebergs in the ocean. Perhaps they could change cloud movements and bring rain where it is needed.

1.The huge mirror would ______.

A．stand 60 miles in height (高度)             B．be 60 miles from side to side

C．cover 60 miles of the earth                D．be 60 miles above the earth

2.The mirror would be used to ______.

A．reflect (反射) sunlight                    B．absorb (吸收) sunlight

C．see what the earth looks like               D．see how clouds move

3.The strong light from the mirror could possibly ______.

A．hurt fruit crops                         B．set fire to cities

C．bring longer daytime                     D．shine through walls

4.The huge mirror is ______.

A．something in a story                     B．already made

C．just an idea                            D．to be made soon

 

Answer 1

【答案】

1.B

2.A

3.C

4.C

【解析】

试题分析：本文叙述了科学家的一种想象，在地球的上方放一面60英里宽的镜子，它可以用来为城市延长照明的时间，它的能量可以融化霜冻，以防霜冻冻坏庄稼。还可以融化冰山，能够改变云的运动以便在需要雨的地方降雨。

1.细节理解题。根据It might be sixty miles wide.故选B。

2.细节理解题。根据It would be used to catch the rays (光线) of the sun. It would direct the sun’s rays upon the earth as a child might do to make sunlight dance on the wall with a hand mirror. 镜子能反射阳光，故选A。

3.细节理解题。根据They could light up cities by night. 故选C。

4.细节理解题。根据Scientists would like to place a huge mirror in space above the earth. It might be sixty miles wide. 这是科学家的想象出来的，故选C。

考点：科普类短文阅读。

点评：细节题为阅读考题的重头戏，所占比例高达80% ，相对而言较简单，因为这类题虽然要求理解准确，但基本上限于字面意义的理解，范围也限于局部，因此是我们可望得高分的部分。细节题绝大部分体现“中心思想是解”这一原理。本文都是细节理解题，在文中比较容易找到答案。