C. Six. D. Seven.

25. The purpose of the author in writing this passage is

A. that, by banning the violent sports, we human beings can improve our selves.

B. that, by banning the dangerous sports, we can improve the law.

C. that we must take positive steps to improve social welfare system.

D. to show law is the main instrument of social change.

Text 2

Scientists have known since 1952 that DNA is the basic stuff of heredity. They've known its chemical structure since 1953. They know that human DNA acts like a biological computer program some 3 billion bits long that spells out the instructions for making proteins， the basic building blocks of life.

But everything the genetic engineers have accomplished during the past half-century is just a preamble to the work that Collins and Anderson and legions of colleagues are doing now. Collins leads the Human Genome Project， a 15-year effort to draw the first detailed map of every nook and cranny and gene in human DNA. Anderson， who pioneered the first successful human gene-therapy operations， is leading the campaign to put information about DNA to use as quickly as possible in the treatment and prevention of human diseases.

What they and other researchers are plotting is nothing less than a biomedical revolution. Like Silicon Valley pirates reverse-engineering a computer chip to steal a competitor's secrets， genetic engineers are decoding life's molecular secrets and trying to use that knowledge to reverse the natural course of disease. DNA in their hands has become both a blueprint and a drug， a pharmacological substance of extraordinary potency that can treat not just symptoms or the diseases that cause them but also the imperfections in DNA that make people susceptible to a disease.

And that's just the beginning. For all the fevered work being done， however， science is still far away from the Brave New World vision of engineering a perfect human—or even a perfect tomato. Much more research is needed before gene therapy becomes commonplace， and many diseases will take decades to conquer， if they can be conquered at all.

In the short run， the most practical way to use the new technology will be in genetic screening. Doctors will be able to detect all sorts of flaws in DNA long before they can be fixed. In some cases the knowledge may lead to treatments that delay the onset of the disease or soften its effects. Someone with a genetic predisposition to heart disease， for example， could follow a low-fat diet. And if scientists determine that a vital protein is missing because the gene that was supposed to make it is defective， they might be able to give the patient an artificial version of the protein. But in other instances， almost nothing can be done to stop the ravages brought on by genetic mutations. (409 words)

26. It can be inferred from the text that Collins and Anderson and legions of colleagues _____.

[A] know that human DNA acts like a biological computer program

[B] have found the basic building blocks of life

[C] have accomplished some genetic discovery during the past half-century

[D] are making a breakthrough in DNA

27. Collins and Anderson are cited in the text to indicate all the following EXCEPT that ______.

[A] time-consuming effort is needed to accomplish the detailed map of in human DNA

[B] human gene-therapy operations may be applied to the patients

[C] gene-therapy now is already generally used to the treatment and prevention of human diseases

[D] information about DNA may be used in the treatment and prevention of human diseases

28. The word “pirate” (line 2， paragraph 3) means______.

[A] one who robs at sea or plunders the land from the sea

[B] one who makes use of or reproduces the work of another without authorization

[C] to take (something) by piracy

[D] to make use of or reproduce (another's work) without authorization

29. We can draw a conclusion from the text that_____.

[A] engineering a perfect human is not feasible for the time being

[B] it‘s impossible for scientists to engineer a perfect tomato

[C] many diseases will never be conquered by human beings

[D] doctors will be able to cure all sorts of flaws in DNA in the long run

30. The best title for the text may be ______.

[A] DNA and Heredity

[B] The Genetic Revolution

[C] A Biomedical Revolution

[D] How to Apply Genetic Technology

Text 3

The purpose of an interview is to find out if your goals and the goals of an organization are compatible.Other goals of the interview are：to answer questions successfully，obtain any additional information needed to make a decision，accent your special strengths，establish a positive relationship，show confidence，and to sell yourself.Based on these goals，place yourself in the role of the interviewer and develop anticipated questions and answers to three categories：company data，personal data，and specific job data.You also develop questions which you will ask to determine how well your career goals match the needs of the organization.These questions include both those you would ask before a job offer and those you would ask after a job offer.

Prior to the interview，acquaint yourself with the laws pertaining to job discrimination.This knowledge will enhance your chances of being considered on an equal standing with other applicants.

To develop confidence，adequately prepare for the interview.Focus on how you can best serve the organization to which you are applying.Then rehearse until the rough edges are smoothed and you sound convincing to those with whom you have practiced.

Since the interview will center on you，proper self-management process is divided into four stages：the before stage，the greeting stage，the consultation stage，and the departure stage.The before stage includes writing a confirmation letter，concentrating on appearance and nonverbal communication，developing your portfolio，anticipating questions with positive responses，and arriving early.The greeting stage includes greeting everyone courteously，using waiting-room smarts，using your time wisely，and applying proper protocol when meeting the interviewer.The consultation stage includes responsiveness and enthusiasm，knowing when to interject key points，showing sincerity，highlighting your strengths，and listening intently.The departure stage includes leaving on a positive note，expressing appreciation，expressing interest，leaving promptly，and making notes immediately after departure.

To save time and money and offer convenience to prospective employees and employers，video taping and satellite videophones may become a common method of interviewing.Being at ease in front of a camera would be important for these types of interviews.

Following the interview，write thank-you letters to each person who interviewed you and to those who helped you get the interview.When invited for a second interview，go prepared by using your notes and feedback from the interview to zero in on what the company wants.If the company doesn‘t respond in two weeks，call back or write a follow-up letter.You may get turned down.If so，try to find out why as a means of self-improvement.

Following a job offer，take a few days to consider all elements and then call or write a letter either accepting or declining the offer-—whichever is appropriate.If you accept and you are presently employed，write an effective letter of resignation，departing on a positive note.

31.The word“compatible”in the first sentence probably means____.

[A] in agreement [B] in conflict

[C] complementary [D] practicable