Defiance is to opposition as exertion is to______. () A: restraint B: endeavor C: vigor D: challenge E: expert

The chair was a movable wonder, he loved the feeling of power and strength it gave him for so little ______. A: efforts B: challenge C: exchange D: exertion

A 75-year-old man is noted to have chest pain with exertion and has been passingout recently. On examination he is noted to have a harsh systolic murmur.Which of the following is the best therapy for his condition? A: Coronary artery bypass B: Angioplasty C: Valve replacement D: Carotid endarterectomy

哪项不是常用的评价有氧运动强度的指标： A: 最大摄氧量百分比 B: 最大心率百分比(% HRmax)与靶心率 C: 代谢当量(metabolic equivalent） D: 主观强度感觉(rating of perceived exertion， RPE) E: 持续时间

A 45-year-old woman comes to the clinic complaining of shortness of breath and palpitation on exertion for 3 years. Physical examination reveals that cardiac dullness border enlarges laterally and inferiorly, and cardiac dullness border is boot-shaped. The cause for her symptoms is most likely to be A: aortic regurgitation B: cor pulmonale C: dilated cardiomyopathy D: isolated mitral stenosis E: hypertensive heart disease

Which one is the essential of Tuiba Shangqiao? A: When pushing against each other, the amount of force exerted should be appropriate. Avoid sudden exertion of force during the pushing and pulling. B: Lift with upward palms,cross palms and separate hands outwards C: Concentrate strength on arms ,push forward D: Slowly raise the arms with straight elbows, push forward arms and squat down, pull back with strength, and then stand up.

Moods, say the experts, are emotions that tend to become fixed, 1) an influence on one's outlook for hours, days or even weeks. That's 2) if your mood is a pleasant one, but it will be a problem if you are sad, anxious, angry or lonely. Perhaps one of the best ways to deal with such moods is to 3) . Sometimes, though, there is no one to listen. Modern science offers an abundance of drugs to deal with bad moods. But scientists have also discovered the practicability of several non-drug 4) to release you from an unwanted mood. These can be just as useful as drugs, and have the added benefit of being healthier. So, the next time you feel out of sorts, don't 5) the drug store – try the following approach. Of all the mood-altering self-help techniques, physical exercise seems to be the most 6) cure for a bad mood. “If you could keep up the exercise, you'd be in high spirits,” says Kathryn Lance, author of Running for Health and Beauty. Obviously, physical activity 7) mood changes. Researchers have explained biochemical and various other changes that make exercise 8) drugs as a mood-raiser. Physical exertion such as housework, however, does little help, probably because it is not intensive enough, and people usually do it unwillingly. The key is physical exercise – running, cycling, walking, swimming or other sustained activities that 9) the heart rate, increase circulation and improve the body’s use of oxygen. Do them for at least 20 minutes a 10) , three to five times a week.

中国大学MOOC: Task: Read the article about a kind of fitness training called HIIT. Then choose the best explanations for some of the words and expressions. HIIT: Is the fitness scenes biggest fad doing more harm than good?1. High Intensity Interval Training (HIIT) has been the darling of the fitness scene for a few years now. Fundamentally, itinvolves repetitions of short bursts of intense, maximal effort exercise; usually for anywhere between 20 to 40 seconds.2. The theory behind HIIT is very appealing. By working out at your top level of exertion, you burn more calories in a short space of time than other workouts. Whats more, studies show that your metabolism stays in a heightened state for up to 24 hours after youve finished. And in practice, HIIT can have impressive results. Its an effective tool for increasing cardiovascular fitness, sculpting your physique and increasing metabolic rate. Hence why HIIT classes are popping up all over the place. People have become accustomed to turning up to a class with loud music and dark lighting,just like a night club – and leaving in the same state: barely able to walk.3. However ... I have a big bone to pick with HIIT, which is that theres often no focus on form or technique in these classes, even though its nowprescribed as the go-to form of exercise for everyone. Instead, the measure of a good HIIT sessions seems to be how destroyed you feel after a class. Its inevitable that problems arise from this all pain for gain approach.4. One issue is simply that people are doing workouts that theyre not conditioned for.There is no emphasis on flexibility, mobility or activation in manyHIIT classes; yet all are incredibly important in keeping the body fit and healthy as you age.5. Whats more, I regularly see people “smashing” multiple HIIT classes a day, 5-6 days per week. HIIT should not be done more than three times per week (at most), because it is so strenuous. It puts an incredible strain on your nervous system, joints and muscles; especially if you are overweight and unfit.6. The HIIT approach to exercise has gone OTT. Its enteringunsustainable territory.7. HIIT’s rise in popularity is symptomatic of what is wrong with the fitness industry as a whole: a brazen disregard of the fundamentals, and a detrimental “one size fits all” mentality. Having trained 100s of clients in my fiveyears as a personal trainer, the biggest issues most people have are a lack of flexibility, mobility and core strength, on top of muscle activation issues. All of the above can lead to chronic injuries and are further exacerbated by HIIT.8. My belief is that everyone should try to train like athletes do. I don’t mean the same training frequency and intensity as athletes, I mean the mentality and the approach. Having trained as a competitive sprinter for fouryears, I learned to take every aspect of my life into account: sleep, rest days, nutrition and weaknesses. I learnt to listen to my body. Some days I would wake up feeling tired and fatigued, so on those days I wouldn’t train hard.I would do something less intense and focus on recovery.9. Remember: burning calories isnt the be all and end all of fitness and good health. Yes, HIIT may burn more calories than any other form of exercise, but its no use if it leads to injury or illness.Overtraining is a real danger:it can ruin your immune system, cause insomnia, affect your appetite and release cortisol, which in turn can make you more likely to put on fat. ********************************************What does the word “fad” in the title probably mean?