Have you ever seen people building houses? To build a house, you need workers．They use their hands, tools(工具)and machines to put things together．Building the ISS(国际太空站)is the same．The difference is that the workers are astronauts．They walk in space and use robots’ arms and hands to do their work．
In the space station ,astronauts are comfortable．The temperature there is about 21℃．But outside the station, it can be too hot or cold for people．In the sunlight, it’s about 120℃．In the shadow(阴暗处)of the station, it’s about -85℃．So when astronauts walk in space, they have to wear heavy clothes----spacesuits．
Spacesuits also keep astronauts safe from flying rubbish(垃圾)in space．Each time people go into space, they leave rubbish there．So astronauts should be careful because there’s a lot of rubbish, some rubbish goes many times as fast as a plane!
Space walking is not easy, and it can be dangerous．So getting ready for it takes a lot of time to learn．Astronauts will need to do 160 space walks to finish their work in the ISS．That will take about 1,900man-hour of work．
(1)
What’s the temperature in the space station?
[ ]
A．
21℃
B．
120℃
C．
－85℃
D．
－21℃
(2)
The astronauts work in space with ________
[ ]
A．
scientists’ hands
B．
tools in their hands
C．
robots’ arms and hands
D．
workers’ hands
(3)
Which of following is TRUE according to the passage?
[ ]
A．
Space walking is very comfortable
B．
Space walking is difficult
C．
Astronauts needn’t wear spacesuits when walking in space．
D．
Space walking is very safe
(4)
What does the underlined word“spacesuit”mean in Chinese?
[ ]
A．
太空服
B．
防暴服
C．
羽绒服
D．
雨衣
(5)
Which of following is not TRUE according to the passage?
[ ]
A．
Spacesuits can keep astronauts warm
B．
Spacesuits can keep astronauts safe
C．
Flying rubbish in space goes very slowly
D．
Outside the station ,it can be too cold or hot for people．
How much sleep do we need? The answers are different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Amexicans sleep for an average of seven to eight hours a night. After age fifty, the average sleep hours go down to 6.5 hours a night.
Most people will have a bad night when they can't fall asleep. About one in three Americans has a problem with sleep. Many of these people cannot fall asleep. The name of this problem is called insomnia(失眠症).
This is not a new problem. Many famous people in history had insomnia .Some of these people had their own ways to sleep well. Benjamin Franklin(本杰明·富兰克林), the famous inventor, had four beds.He moved from one to another to fall asleep. King Louis XIV (国王路易十四) of France had 413 beds and hoped to fall asleep in one of them. Mark Twain, the famous writer, had a different way: he hy on his side(侧卧) across the end of the bed!
(1)
Most Americans usually sleep for about _________ hours a night.
A. 3 B. 5～6 C. 10 D. 7～8
[ ]
(2)
As people grow older,they need __________ at night.
A. less sleeping time
B. more sleeping time
C. the same amount of sleeping time
D. a fixed time to sleep
[ ]
(3)
If there are 100 million people in the US hav-ing a problem with sleep,what's the popula-tion of it? About _______.
A. 200 million B. 300 million C. 600 million D. 900 million
[ ]
(4)
Franklin tried to go to sleep by __________.
A. moving from one to another of his 413 beds B. moving from one to another of his 4 beds
C. inventing a bed for himself D. lying on his side across the end of the bed
[ ]
(5)
It's not mentioned in the passage,but we know that Mark Twain was ___________.
