Questions 31 to 35 are based on the followingpassage. “Humans should not try to avoid stress anymore than they would shun food, love or exercise.” Said Dr. Hans Selye, thefirst physician to document the effects of stress on the body. While here’s onquestion that continuous stress is harmful, several studies suggest thatchallenging situations in which you’re able to rise to the occasion can be goodfor you. In a 2001 study of 158 hospital nurses, thosewho faced considerable work demands but coped with the challenge were morelikely to say they were in good health than those who felt they stress that youcan manage also boost immune ( 免疫的 ) function. In a study at the Academic Centerfor Dentistry in Amsterdam,researchers put volunteers through two stressful experiences. In the first, atimed task that required memorizing a list followed by a short test, subjectsthrough a gory ( 血淋淋的 ) video on surgical procedures.Those who did well on the memory test had an increase in levels ofimmunoglobulin A, an antibody that’s the body’s first line of defense againstgerms. The video-watchers experienced a downturn in the antibody. Stress prompts the body to produce certainstress hormones. In short bursts these hormones have a positive effect,including improved memory function. “They can help nerve cells handleinformation and put it into storage,” says Dr. Bruce McEwen of Rockefeller Universityin New York.But in the long run these hormones can have a harmful effect on the body andbrain. “Sustained stress is not good for you,” saysRichard Morimoto, a researcher at NorthwesternUniversity in Illinois studying the effects of stress onlongevity, “It’s the occasional burst of stress or brief exposure to stressthat could be protective.” 31. Thepassage is mainly about ________. A) the benefits of manageable stress B) stay away from C) run out of D) put up with ( D ) 32. Theword “shun” (Line 1, Para. 1) most probably means ________. A) cut down on B) stay away from C) run out of D) put up with ( B ) 33. Wecan conclude from the study of the 158 nurses in 2001 that ________. A) people under stress tend to have apoor memory B) people who can’t get their job doneexperience more stress C) doing challenging work may be good forone’s health D) stress will weaken the body’s defenseagainst germs ( C ) 34. Inthe experiment described in Paragraph 3, the video-watchers experienced adownturn in the antibody because ________. A) the video was not enjoyable at all B) the outcome was beyond their control C) they knew little about surgicalprocedures D) they felt no pressure while watchingthe video ( B ) 35. Dr.Bruce McEwen of Rockefeller University believes that________. A) a person’s memory is determined by thelevel of hormones in his body B) stress hormones have lasting positiveeffects on the brain C) short bursts of stress hormonesenhance memory function D) a person’s memory improves withcontinued experience of stress ( C )