“Humans should not try to avoid stress any more than they would shun food, love or exercise.” said Dr. Hans Selye, the first physician to document the effects of stress on the body. While here’s no question that continuous stress is harmful, several studies suggest that challenging situations in which you’re able to rise to the occasion can be good for you.

　　In a 2001 study of 158 hospital nurses, those who faced considerable work demands but coped with（设法处理） the challenge were more likely to say they were in good health than those who felt they couldn’t get the job done.

　　Stress that you can manage may also boost immune(免疫的) function. In a study at the Academic Center for Dentistry in Amsterdam, researchers put volunteers through two stressful experiences. In the first, a timed task that required memorizing a list followed by a short test, subjects believed they had control over the outcome. In the second, they weren’t in control: They had to sit through a gory(血淋淋的) video on surgical procedures. Those who did go on the memory test had an increase in levels of immunoglobulin A, an antibody that's the body’s first line of defense against germs. The video-watchers experienced a downturn in the antibody.

　　Stress prompts the body to produce certain stress hormones（荷尔蒙）. In short bursts these hormones have a positive effect, including improved memory function. “They can help nerve cells handle information and put it into storage,” says Dr. Bruce McEwen of Rockefeller University in New York. But in the long run these hormones can have a harmful effect on the body and brain.

“Sustained stress is not good for you,” says Richard Morimoto, a researcher at Northwestern University in Illinois studying the effects of stress on longevity(长寿), “It’s the occasional burst of stress or brief exposure to stress that could be protective.”

1.The passage is mainly about ________.

A. the benefits of manageable stress

B. how to avoid stressful situations

C. how to cope with stress effectively

D. the effects of stress hormones on memory

2. The underlined word “shun” (Line 1, Para.1) most probably means________.

A. cut down on

B. stay away from

C. run out of

D. put up with

3. We can conclude from the study of the 158 nurses in 2001 that ________.

A. people under stress tend to have a poor memory

B. people who can’t get their job done experience more stress

C. doing challenging work may be good for one’s health

D. stress will weaken the body’s defense against germs

4.Dr. Bruce McEwen of Rockefeller University believes that ________.

A. a person’s memory is determined by the level of hormones in his body

B. stress hormones have lasting positive effects on the brain

C. short bursts of stress hormones enhance memory function

D. a person’s memory improves with continued experience of stress

Read the passage carefully and answer the questions or complete the statements in the fewest possible words.

Americans are proud of their variety and individuality, yet they love and respect few things more than a uniform, whether it is the uniform of a lift operator or the uniform of a five-star

general. Why are uniforms so popular in the United States?

　　Among the arguments for uniforms, one of the first is that in the eyes of most people they look more professional than civilian clothes. People have become conditioned to expect superior quality from a man who wears a uniform. The television repairman who wears a uniform tends to inspire more trust than one who appears in civilian clothes, Faith in the skill of a garage mechanic is increased by a uniform . What easier way is there for a nurse, a policeman, a barber, or a waiter to lost professional identity than to step out of uniform?

　　Uniforms also have many practical benefits. They save on other clothes, They save on laundry bills. They are tax - deductible. They are often more comfortable and more durable than civilian clothes.

　　Primary among the arguments against uniforms is their lack of variety and the consequent loss of individuality experienced by people who must wear them. Though there are many types of uniforms, the wearer of any particular type is generally stuck with it, without change, until retirement. When people look alike, they tend to think, speak, and act similarly, on the job at least.

　　Uniforms also give rise to some practical problems. Though they are long - lasting, often their initial expense is greater than the cost of civilian clothes. Some uniforms are also expensive to maintain, requiring professional dry cleaning rather than the home laundering possible with many types of civilian clothes.

1.What surprises us is that                               .

2.What are people likely to think of a man in uniform?

3.Why are some people against uniforms?

4.The underlined sentence tells us that                             .

It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) are more important than any financial considerations.

　　Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia in the middle of her career was to take advantage of the greater freedom to choose research questions.

　　The effect of a salary cut is probably less serious for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral(博士后的) researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities.

　　Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition (转换) to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to manage budgets and negotiate contracts. They are also well placed to bring something extra to their teaching that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”

1.By “a one-way street” (Line 1, Para. 1), the author means ______.

2.The underlined word “deterrent” (Line 3, Para. 1) most probably refers to something that ______.

3.What was Helen Lee’s major consideration when she changed her job in the middle of her career?

4.What contribution can industrial scientists make when they come to teach in a university?

It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) are more important than any financial considerations.
　　Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia in the middle of her career was to take advantage of the greater freedom to choose research questions.
　　The effect of a salary cut is probably less serious for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral(博士后的) researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities.
　　Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition (转换) to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to manage budgets and negotiate contracts. They are also well placed to bring something extra to their teaching that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”
【小题1】By “a one-way street” (Line 1, Para. 1), the author means ______.