二、阅读理解(11-30)
Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are.
Food for space has to be packed in special ways. Some of it goes into tubes that a man can squeeze into his mouth. Bite-sized cookies are packed in plastic. .
There is a good reason for covering each bite. The plastic keeps pieces of food from travelling in the spaceship. On the earth very small pieces of food would simply fall to the floor. But gravity doesn' t pull them to the floor when they are out of the plastic in a spaceship. They move here and there and can get into a man' s eyes or into the spaceship' s instruments. If any of the instruments is blocked, the astronauts may have trouble getting safely home.
As astronauts travel on longer space trips, he must take time to sleep. An astronaut can fit himself to his seat with a kind of seat belt. Or, if he wants to, he can sleep in a sleeping bag which is fixed in place under his seat. But be careful he must put his hands under the belt when he goes to .sleep. This is because he is really afraid that he might touch one of controls that isn't supposed to be touched until later.
11. Why would astronauts cover each bite of food in space?
A. Because small pieces of food would fall down to the floor.
B. Because weightless pieces of food might make trouble when they travel around.
C. Because they haven' t enough food for longer trips.
D. Because astronauts don' t want to waste food.
答案:B
12. In a spaceship, astronauts can__________.
A. walk just as they do on the earth
B. not eat anything because it' s dangerous
C. control the spaceship when they are sleeping
D. not litter small things or it will make trouble
答案:D
13. In what way is food for space packed?
A. Very small pieces of food are put on the floor.
B. Some of it is put into tubes.
C. Small-sized cookies are packed in plastic.
D. Both B and C.
答案:D
14. Why does an astronaut put his hand under his belt when he sleeps?
A. Because he thinks it is comfortable to sleep in that way in space.
B. Because he doesn' t want to touch any controls when he sleeps.
C. Because the instruments of the spaceship are easily broken.
D. Because he is afraid that the seat will move.
答案:B
15. The best title of this article is__________.
A. Eating and Sleeping in Space
B. How Astronauts Eat in Space
C. Food for Space
D. How Astronauts Sleep in Space
答案:A
The Chinese have used a method called acupuncture (针灸) to perform operations for about4,000 years without putting the patient to sleep. This involves placing flexible needles into certain parts of the body. The needles are available in a number of stores in China and anyone may buy them.
To learn how to use the needles takes about one month of training. But to be skillful requires grea-ter time. The person who performs the acupuncture knows how to put in the needles so the needles themselves are not painful. This person also .knows where to place the needles so the patient feels no pain in the area where the operation is to be performed. A particular operation might require 25 or more needles placed in various parts of the body. But now this operation requires only 3 or 4 needles.
Today, the Chinese doctors are trying to learn more about acupuncture. They are trying to de-velop a convincing theory to explain how the needles work in preventing pain, or why a needle in the wrist, for example, would prevent the pain in the area of the mouth,A patient who needs an operation is given a choice between having acupuncture or having one of the chemicals used for putting him to sleep. It has been estimated that over half of the patients choose acupuncture because there is no sickness after the operation but the chemical may make the patient sick for a few hours or a day.
16. Acupuncture is__________.
A. a medical operation
B. a medical needle
C. a medical technique
D. a medical machine
答案:A
17. Which statement is NOT true of the performer of acupuncture?
A. He knows where to place the needles without pain.
B. He knows where the operation is to be performed.
C. He knows how to perform the operation to cure the patient.
D. He knows how to use the needles in an operation.
答案:C
18. To learn how to use the needles, it takes a person__________.
A. several months
B. a couple of weeks
C. a little time
D. almost one month
答案:D
19. It can be learned from the passage that__________.
A. the person performing the acupuncture knows a lot about the making of needles
B. an operation now needs fewer needles than in the past
C. acupuncture has existed in China for as long as 2,000 years
D. few patients prefer acupuncture to chemicals
答案:B
20. Which is implied but not stated in the passage?
A. The Chinese mainly use acupuncture to cure strange disease.
B. The Chinese are learning to be more skillful and efficient in acupuncture.
C. The Chinese have spread acupuncture all over the world.
D. Most Chinese patients prefer acupuncture to chemicals in curing diseases.
答案:B
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