46. What does “these two killers” in the second paragraph refer to ?

A gene technology and another treatment of the two diseases.

B. The two murderers who killed the cloned baby

C. The two diseases of cancer and heart disease

D. Hereditary diseases and cancer

45. The best title of this passage might be _____.

A. Computer-graded Writing　　　　　　 B. Human-graded Writing

C. How to Improve Students’ Writing　　 D. Advantages of E-readers.

B

Gene technology to benefit people

Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people.

The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.

Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial family being a good example, have hereditary diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientist just need to find the wrong gene and correct it, and a healthy child will be born.

Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep, therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.

44. According to the passage, which of the following tests has been graded by using the computer systems?

　 A. the GMAT　　 B. The GRE　　 C. the TOEFL　　 D. all of the above

43. Which of the following is NOT the advantage of e-readers?

　 A. Saving much of teachers’ time　　 B. Saving a lot of money.

C. Being fair and objective　　　　 D. Appreciating humor and beauty

42. What do the teachers think of the computer system?

　 A. They think highly of the computer systems.

B. They think that computers cannot grade writing as well as people.

C. They believe that computers can understand a writer’s idea well.

D. They are glad computers will spare their effort to correct student’s school work

41. From the first paragraph we can conclude that _________.

A. American students’ writing ability is being improved

B. American students’ writing ability is not satisfactory

C. business leaders and teachers are not worried about American students’ writing

D. all college entrance tests will include a writing part

29. A. restored　　　　　　　 B. absorbed　　　　　　 C. prohibited　　　　　 D. withdrawn

28. A. needed　　　　　　　　 B. forgotten　　　　　　 C. practised　　　　　　 D. left

27. A. extra　　　　　　　　　 B. traditional　　　　　 C. basic　　　　　　　　　 D. regular