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1、2021年职称英语考试试题卫生类概括大意课堂练习18怎样概括段落大意 职称英语网权威公布2021年职称英语考试试题卫生类概括大意课堂练习18，更多2021年职称英语考试试题卫生类概括大意课堂练习18相关信息请访问职称英语考试网。More Exercise1. Physical fitness is the result of many factorsgood medical and dental care, proper nutrition, adequate rest and relaxation, and sensible personal habits. But these are ne
2、ver enough. An essential factor is regular physical activityexercise for a body that needs it to function well.2. All of us know that ordinary movementsthings like running, jumping, and bendingare made by muscles. Muscles also do many other things. They suck air into your lungs, push food along your
3、 digestive tract, and tighten your blood vessels to raise blood pressure when you need more pressure for an emergency. Your heart is a muscular pump.3. When your muscles are not used, or are not used enough, they do not develop and grow properly. They soon become flabby and weak, shrink in size, and
4、 lose the ability to do the jobs they were meant to do.4. Recent studies showed that the average high school student spends fifteen to thirty hours a week watching television and only two hours a week in organized play or exercise. That is one reason why one-third of the 200,000 pupils tested for th
5、e Presidents Council on Physical Fitness failed a simple test of strength, stamina, and flexibility. Some of the boys and girls could not raise themselves to a sitting position without using their hands!5. Cars and buses, elevators and escalators, TV and push-button machines all tend to reduce stren
6、uous physical activity. But our bodies still need exercise. Without it they soon become weak, ineffective, and unattractive.23. Paragraph 1 _.24. Paragraph 2 _.25. Paragraph 4 _.26. Paragraph 5 _.A. Factors of physical fitnessB. Our body needs exerciseC. The result of lacking exerciseD. Muscles need
7、 exerciseE. The function of musclesF. The way of keeping fit27. Some people have difficulties in standing up due to _.28. Your muscles become weak when they are _.29. To keep fit, you have to _.30. Muscles can help raise blood pressure by _.A. be overweightB. lacking adequate exerciseC. hurt badlyD. not usedE. do exerciseF. tightening blood vessels
