It is not until recently ______ the scientists have found proof of there being water on Mars.

The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses relate to diet and forty percent of cancer relates to the diet as well, especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures.

That food is connected with illness is not a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic  additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this, penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the practices continue.　　

What is the best possible title of the passage?

　 A. Drug and Food             　B. Cancer and Health

　C. Food and Health              D. Health and Drug

Which of the following statements is NOT true?

　 A. Drugs are always given to animals for medical reasons.

　 B. Some of the additives in our food are added to the food itself and some are

given to the living animals.

　 C. Researchers have known about the potential dangers of food additives for over

thirty-five years.

　 D. Food may cause forty percent of cancer in world.

How has science done something harmful to mankind?

　A. Because of science, diseases caused by polluted food haven’t been virtually

eliminated.

　 B. It has caused a lack of information concerning the value of food.

　 C. Because of the application of science, some potentially harmful substances

have been added to food.

　D. The scientists have preserved the color of meat, but not of vegetables.

What are nitrates used for?

　 A. They preserve flavor in packaged foods.

　 B. They preserve the color of meats.

　 C. They are the objects of research.

The word ‘carcinogenic’ most nearly means ‘_________’.

　 A. trouble-making                 B. color-maintaining

　 C. money-making                 D .cancer-causing

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(延长)human life. But those communities and policy makers are also 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 human genetic code have opened a world of possibilities for human health, as well as for the population imagination.

While European and Japanese researchers are making rapid progress in decoding human DNA, the leading organization for genetic research in the Untied 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(乳腺癌)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 so hard at mapping the human genome?

2.According to the passage, which of the following countries is the most advanced in genetic research?

3.According to the passage, which of the following is NOT true?

4.What is mainly talked about in this passage?

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 are also 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 diseases. Already, the Human Genome Project has become widely known and praised for finding the genes 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, 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.

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.

Which country studied the genes most rapidly in the world?

       A. Japan. B. Germany.       C. The United States.      D. China.

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.

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 scientist

The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives, which we eat, are not all so direct. Farmers often give penicillin to beef and living animals, and because of this, penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the practices continue.

61. What is the best possible title of the passage?

A. Drug and Food   B. Cancer and Health   C. Food and Health   D. Health and Drug 

62. Which of the following statements is NOT true?

A. Drugs are always given to animals for medical reasons

B. Some of the additives in our food are added to the food itself and some are given to the living animals

C. Researchers have known about the potential dangers of additives for over thirty---- five years.

D. Food may cause forty percent of cancer in world.

63. How has science done something harmful to mankind?

A. Because of science, diseases caused by polluted food have been virtually eliminated.

B. It has caused a lack of information concerning the value of food.

C. Because of the application of science, some potentially harmful substances have been added to food.

D. The scientists have preserved the color of meats, but not of vegetables.

64. What are nitrates used for?

A. They preserve flavor in packaged food.     B. They preserve the color of meats

C. They are the objects of research.         D. They cause the animals to become fatter.

65. The word “carcinogenic” most nearly means _________________

A. trouble–making  B. color– retaining C. money –making  D. cancer–causing