This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the strains of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People engaged in normal daytime work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work, the pattern will only gradually go back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at intervals of two hours throughout the period of wakefulness it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far, however, such a form of selection does not seem to have been applied in practice.

　　1. The main problem of the round-the-clock working system lies in _______.

　　A. the disturbance of the daily cycle of workers who have to change shifts too frequently

　　B. the inconveniences brought about to the workers by the introduction of automation

　　C. the fact that people working at night are often less effective

　　D. the fact that it is difficult to find a number of good night workers

　　2. The best solution to implementing the 24-hour working system seems ________.

　　A. to employ people who work on night shifts only

　　B. to create better living conditions for night workers

　　C. to change shifts at longer intervals

　　D. to have longer shifts

　　3. Which of the following statements is NOT true?

　　A. Body temperature may serve as an indication of a worker’s performance.

　　B. The employment of permanent night shift workers seems to be the best solution to problems of the round-the-clock working system.

　　C. Taking body temperature at regular intervals can show how a person adapts to the changes of routine.

　　D. Disturbed sleep occurs more frequently among shift workers.

　　4. It is possible to find out if a person has adapted to the changes of routine by measuring his body temperature because ________.

　　A. body temperature changes when the cycle of sleep and wakefulness alternates

　　B. body temperature changes when he changes to night shift or back

　　C. the temperature reverses when the routine is changed.

　　D. people have higher temperature when they are working efficiently.

　　5. The phrase “coincide with”(Line 3, Para.1) could best be replaced by _______.

　　A. take place

　　B. agree with

　　C. accord to

　　D. take up

　　1. B 推理引申題。第二段中提到人適應(yīng)新習慣需要五天到一個禮拜的時間，但事實是工人的正常生活節(jié)奏經(jīng)常處于被擾亂的狀態(tài)，使工作和睡眠效率不佳。所以，正確答案為B。

　　2. A 事實細節(jié)題。根據(jù)第三段第一句“The only real solution appears…night workers”

　　3. A 事實細節(jié)題。最后一段提到“…by taking body temperature…can be seen how quickly a person can adapt to a reversed routine”。

　　4. C 推理引申題。最后一段指出體溫與人處于醒著的狀態(tài)還是睡眠狀態(tài)的關(guān)系，只有C與原文相符。

　　5. B 詞意猜測題。意思是“與……一致”。

　　The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise (有氧操). Millions of individuals became engaged in a variety of aerobic activities, and literally thousands of health spas developed around the country to capitalize (獲利) on this emerging interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed prior to this aerobic fitness movement, even a national chain with spas in most major cities. However, their focus was not on aerobics, but rather on weight-training programs designed to develop muscular mass, strength, and endurance in their primarily male enthusiasts. These fitness spas did not seem to benefit financially form the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs offered few, if any, health benefits. In recent years, however, weight training has again become increasingly popular for males and for females. Many current programs focus

　　not only on developing muscular strength and endurance but on aerobic fitness as well.

　　Historically, most physical-fitness tests have usually included measures of muscular strength and endurance, not for health-related reasons, but primarily because such fitness components have been related to performance in athletics. However, in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health benefits as well. The American College of Sports Medicine now recommends that weight training be part of a total fitness program for healthy Americans. Increased participation in such training is one of the specific physical activity and fitness objectives of Healthy People 2000: National Health Promotion and Disease Prevention Objectives.

　　1.The word “spas” (Line 3, Para. 1) most probably refers to ________.

　　A) sports activities

　　B) places for physical exercise

　　C) recreation centers

　　D) athletic training programs

　　2 Early fitness spas were intended mainly for ________.

　　A) the promotion of aerobic exercise

　　B) endurance and muscular development

　　C) the improvement of women’s figures

　　D) better performance in aerobic dancing

　　3.what was the attitude of doctors towards weight training in health improvement?

　　A) Positive.

　　B) Indifferent.

　　C) Negative.

　　D) Cautious.

　　4.People were given physical fitness tests in order to find out ________.

　　A) how ell they could do in athletics

　　B) what their health condition was like

　　C) what kind of fitness center was suitable for them

　　D) whether they were fit for aerobic exercise

　　5.Recent studies have suggested that weight training ________.

　　A) has become an essential part of people’s life

　　B) may well affect the health of the trainees

　　C) will attract more people in the days to come

　　D) contributes to health improvement as well

　　1.B 2.B 3. C 4.A 5.D