65．The main idea of this article is about . A．unlocking genetic code B．the genes' di——青夏教育精英家教网—

65．The main idea of this article is about . A．unlocking genetic code B．the genes' discovery C．the great human genome D．the genes and the scientists C Believe it or not, optical illusion can cut highway crashes. Japan is a case in point. It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. But stripes, called chevrons, painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down. Now the American Automobile Association Foundation for Traffic Safety in Washington D. C．is planning to repeat Japan’s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes. Excessive speed plays a major role in as much as one fifth of all fatal traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in areas where speed-related hazards are the greatest curves, exit slopes, traffic circles, and bridges. Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bars. Chevrons, scientists say, not only give drivers the impression that they are driving faster than they really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway speed and the number of traffic accidents. 【查看更多】

题目列表(包括答案和解析)

阅读理解

　　June 26, 2000, the Human Genome(基因组)Project, a great ＄3 billion, 15-year task aimed at drawing the genetic map of humans, is now more than 90 percent completed．The scientific and medical communities are very excited about the chances genetic research provides for getting rid of diseases and prolonging human life．But those communities and policy makers also are careful about the scientific door they are opening as the project uncovers the mysteries of life．

　　For the last few years, the genetic advances in the fast developing field of biotechnology have provided material for all kinds of work, but the developments of modern science in unlocking the secrets of the human genetic code have opened a world of possibilities for human health, as well as for the popular imagination．

　　While European and Japanese researchers are making rapid progress in decoding(解码)human DNA, the leading organization for genetic research in the United States, which began in 1990, is“unlocking the code”of the human body to learn how to defeat fatal diseases．Already, the Human Genome Project has become widely known and praised for finding the genes connected with as yet terrible diseases, and making progress toward separating the genes that show a sign of breast cancer or AIDS．

　　Once these genes are found and studied, researchers can develop new ways to attack infections and genetic diseases．Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses．

(1)

Why did the scientists work hard at mapping the Human Genome?
[　　]
A．	Because the Human Genome can destroy many illnesses．
B．	Because the Human Genome's completion can help them get rid of many diseases．
C．	Because they wanted to be better known than others．
D．	Because the Human Genome can provide a lot of chances of work．

(2)

Which country studied the genes most rapidly in the world?
[　　]
A．	Japan．
B．	Germany．
C．	the United States．
D．	China．

(3)

Which of the following is NOT true?
[　　]
A．	If the genes can be found, scientists can study many new ways to cure illnesses．
B．	The United States began the Genes Study early in the 19th century．
C．	Many medical companies show great interest in drawing the Human Genome map．
D．	The scientists have made great progress in connecting the genes with the cancers．

(4)

The author suggests that the Human Genome Project can cause ________．
[　　]
A．	the policy makers to feel very worried and careful
B．	the scientists to work harder
C．	many people to find work harder
D．	a lot of companies to produce many new drugs

(5)

The main idea of this article is about ________．
[　　]
A．	the great human genome
B．	the genes' discovery
C．	unlocking the human genetic code
D．	the genes and the scientists

查看答案和解析>>

阅读理解

　　June 26, 2000－the Human Genome(基因组)Project, a great ＄3 billion, 15-year task aimed at drawing the genetic(遗传的)map of humans, is now more than 90 percent completed．The scientific and medical communities are very excited about the chances genetic research provides for getting rid of diseases and prolonging(延长)human life．But those communities and policy makers also are careful about the scientific door they are opening as the project uncovers the mysteries of life．

　　For the last few years, the genetic advances in the developing field of biotechnology have provides material for all kinds of work, but the developments of modern science in unlocking the secrets of the human genetic code have opened a world of possibilities for human health, as well as for the popular imagination．

　　While European and Japanese researchers are making rapid progress in decoding(解码)human DNA, the leading organization for genetic research is in the United States, which began in 1990, is“unlocking the code”of the human body to learn how to defeat fatal(致命的)diseases．Already, the Human Genome Project has become widely known and praised for finding the genes connected with terrible diseases as yet(迄今), and making progress toward separating the genes that show a sign of breast cancer or AIDS．

　　Once these genes are found and studied, researchers can develop new ways to attack infections, and genetic diseases．Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses．

(1)

Why did the scientists work hard at mapping the human genome?
[　　]
A．	Because the human genome can destroy many illnesses．
B．	Because the human genome's completion can help them get rid of many diseases．
C．	Because they wanted to be better known than others．
D．	Because the human genome can provide a lot of chances of work．

(2)

Which country studied the genes most rapidly in the world?
[　　]
A．	Japan．
B．	Germany．
C．	The United States．
D．	China．

(3)

Which of the following is NOT true?
[　　]
A．	If the genes can be found, scientists can study many new ways to cure illnesses．
B．	The scientists have made great progress in connecting the genes with the cancers．
C．	Many medical companies show great interest in drawing the human genome map．
D．	The United States began the Genes Study early in the 19th century．

(4)

The author suggests that the Human Genome Project can cause ________．
[　　]
A．	the policy makers to feel very worried and careful
B．	the scientists to work harder
C．	many people to find work easily
D．	a lot of companies to produce many new drugs

(5)

The main idea of this article is about ________．
[　　]
A．	unlocking genetic code
B．	the genes' discovery
C．	the great human genome
D．	the genes and the scientists

查看答案和解析>>

阅读理解

　　June 26, 2000－the Human Genome(基因组)Project, a great $3 billion, 15－year task aimed at drawing the genetic(遗传的)map of humans, is now more than 90 percent completed．The scientific and medical communities(团体)are very excited about the chances genetic research provides for getting rid of diseases and prolonging(延长)human life．But those communities and policy(政策)makers also are careful about the scientific door they are opening as the project uncovers the mysteries of life．

　　For the last few years, the genetic advances in the developing field of biotechnology(生物技术)have provides material for all kinds of work, but the developments of modern science in unlocking the secrets of the human genetic code(密码)have opened a world of possibilities for human health, as well as for the popular imagination．

　　While European and Japanese researchers are making rapid progress in decoding(解码)human DNA, the leading organization for genetic research is in the United States, which began in 1990,is “unlocking the code”of the human body to learn how to defeat fatal(致命的)diseases．Already, the Human Genome Project has become widely known and praised for finding the genes(基因)connected with as yet(迄今)terrible diseases, and making progress toward separating the genes that show a sign of breast cancer or AIDS．

　　Once these genes are found and studied, researchers can develop new ways to attack infections(传染),and genetic diseases．Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses．

(1)

Why did the scientists work hard at mapping the Human Genome?
[　　]
A．	Because the Human Genome can destroy many illnesses．
B．	Because the Human Genome's completion can help them get rid of many diseases．
C．	Because they wanted to be better known than others．
D．	Because the Human Genome can provide a lot of chances of work．

(2)

Which country studied the genes most rapidly in the world?
[　　]
A．	Japan．
B．	Germany．
C．	The United States．
D．	China．

(3)

Which of the following is NOT true?
[　　]
A．	If the genes can be found, scientists can study many new ways to cure illnesses．
B．	The scientists have made great progress in connecting the genes with the cancers．
C．	Many medical companies show great interest in drawing the human genome map．
D．	The United States began the Genes Study early in the 19th century．

(4)

The author suggests that the Human Genome Project can cause ________．
[　　]
A．	the policy makers to feel very worried and careful
B．	the scientists to work harder
C．	many people to find work easily
D．	a lot of companies to produce many new drugs

(5)

The main idea of this article is about ________．
[　　]
A．	unlocking genetic code
B．	the genes'discovery
C．	the great human genome
D．	the genes and the scientists

查看答案和解析>>

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