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高二英语阅读理解试题及详解-科技类（2）,http://www.170xue.com
Researchers first studied zinc as a way to speed recovery. Dr. Waltor Powys formerly with the United States Air Force noted that the laboratory animals recovered faster when some matters were added to their food. One of these matters was zinc. Dr. Powys later tested the zinc treatment on an American airman recovering from medical operations. The airman who received zinc sulphate(硫酸盐) recovered in half of the usual time. Other doctors studied persons who had a number of strange disorders. The doctors learned that all of these problems were caused by lack of zinc in the body. They treated these disorders successfully by giving the patients zinc sulphate.
The amount of zinc in the body can be found by examining blood and hair. A lack of this important element is not uncommon among people in both industrial and developing countries. Zinc is found in most high protein(蛋白质) foods such as meat, milk, fish and eggs. It is also found in whole grains. But many people do not eat enough of these food. Food markets should add these elements so that more people could get needed amount of these necessary matters.
1. Which of the following statements is true?
A. Scientists found how zinc works a long time ago.
B. People need a large amount of zinc to be healthy.
C. Zinc allows important chemical actions to take place in cells.
D. Zinc must be used in the course of medical operation.
2. One of the results from the study of zinc is that _______.
A. there’s only a little zinc in the human body
B. food rich in protein contains more zinc
C. some physical problems are caused by lack of zinc
D. any patient who receives zinc sulphate gets well immediately
3. The best title for the passage may be _______.
A. A New DiscoveryB. Zinc and Health
C. How Zinc WorksD. Add Zinc to Your Food
【答案解析】
本文是说明文，讲述了锌对人体的保健作用。
1. C。细节题。根据 …but makes it possible for important chemical actions to he carried out in cells.可推知此题答案为C。
2. C。细节题。根据The doctors learned that all of these problems were caused by lack of zinc in the body. 可推知此题答案为C。
3. B。主旨题。根据第一句(主题句) Zinc(锌)is one of about 20 elements necessary for good health.可推知。
(17)
According to a famous optical(光学) expert, Alexander, who recently visited Shanghai, the developed countries in Europe and America have made rules that children must wear resinous(树脂) glasses instead of the traditional glasses made of glass. This is because the glass glasses are more likely to do harm to children’s eyesight.
Alexander pointed out: wearing the right glasses as soon as possible is still the best way to cure and put right children’s eyesight problems.
In America and Japan the resinous glasses have taken up 80 percent of the glasses market. And some European countries and America have made it a law that children, teenagers and drivers must wear resinous glasses. Now, about 10 million children in China have different eyesight problems and they need timely treatment.
But still, too many parents are buying the traditional glass glasses for their children. This is mainly because many parents know little or nothing about the good points of the resinous glasses. Besides, the price for the new glasses is a little higher than the traditional ones.
1. This news article mainly wants to tell us _______.
A. Alexander visited China and introduced a new type of glasses
B. we should wear resinous glasses instead of glass glasses
C. resinous glasses are popular in Europe and America
D. glasses can be made of other materials instead of glass
2. According to Alexander, the “timely treatment” to eyesight problems is _______.
A. to stop wearing glass glasses any more
B. to buy a pair of glasses and wear them right away
C. to wear suitable resinous glasses at the right time
D. to buy glasses made in Europe, Japan or America if possible
3. It can be inferred from this news text that _______.
A. resinous glasses are not on sale in China yet
B. resinous glasses are not acceptable in China
C. glass glasses have disappeared on western market because there is a law against them
D. glass glasses are the first choice in China not only because of their price
【答案解析】
本文指出：传统的玻璃眼镜可能对眼睛产生很大的危害，目前世界上很多国家都在使用树脂眼镜，并建议中国小孩也使用树脂眼镜。
1. B。主旨题。根据文章第 1 段第 1 句 …children must wear resinous(树脂) glasses instead of the traditional glasses made of glass 可推知此题答案为 B。
2. C。推断题。根据文章第 2 段 …wearing the right glasses as soon as possible is still the best way to cure and put right children’s eyesight problems 可推知此题答案为 C。
3. D。细节题。根据文章第 4 段第 2 句 This is mainly because many parents know little or nothing about the good points of the resinous glasses 可推知此题答案为 D。
(18)
With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆) the animal and save the endangered species(物种). That’s similar to what Texas A＆M University researchers have been undertaking(负责) for the past five years in a project called “Noah’s Ark”.
Noah’s Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen(氮). If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A＆M’S College of Veterinary Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2, 000 species of mammals, birds and reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
Chinese scientists said they grew an embryo introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure(过程) could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy(having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A＆M, the first-ever attempt at cloning a dog.
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