题目内容
（请给出正确答案）
Sustained downward movements in the business cycle are referred to as______.
A．recessions
B．economic recoveries
C．inflation
D．expansions
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更多“Sustained downward movements i…”相关的问题
A、needn’t… must
B、need… need
C、must … must
D、must… needn’t
Section C Directions: Read the following text about the Marathon. Five sentences have been removed from the text. Choose the best sentence from the list A-F on the next page to fill in each of the gaps (36-40). There is one extra sentence which you do not need to use. Running the Marathon – Health Risks Running a marathon is the ultimate goal for a hobby athlete. But there can be dangers involved in running a 26.2 mile or 41.2 km race. Most health problems that happen during a marathon race are not very severe – mainly strains and sprains. In some cases, however, heart problems have led to deaths during or immediately after a marathon. In the United States researchers found out that of 11 million runners who have taken part in marathons or half marathons in the last decade 42 died. (36)_______________. Many health experts advise beginners to see doctors before they take up training for a race. (37)_______________. Many hobby athletes do not prepare themselves in the right way for a race. Getting yourself in good physical shape over a period of months is not always easy and requires a lot of self-discipline. Training must start slowly, with short distances, so that your body can get used to the physical stress. (38)_______________. Rest periods should follow days of training. Running advisors say that about a month before a marathon you should be able to run 15 miles, or almost three quarters of the marathon distance, at a comfortable speed. Training too much, however, can lead to stiffness in your muscles or other injuries. (39)_______________. Shortly before a marathon starts, warming up and stretching can be important for your overall performance. One of the biggest problems that marathon runners face during a race is dehydration（脱水）, not getting enough to drink. (40)_______________. One of the most important tasks for a runner is to drink enough throughout a race. A. If it’s hot your body can lose about four liters of fluid through sweating and breathing out air. B. To relieve them, you should lower your training rate and take a few days off. C. Runners often make the mistake of running too fast at the beginning. D. People with heart problems or diabetes should also consult doctors before running. E. Runners should get themselves professional coaches to perform better in a race. F. Most of them had heart problems or heart-related diseases. 请填入正确答案相应的大写字母！ 36. __________
A、the reverse-biased
B、the forward-biased
C、both reverse- and forward-biased
D、zero-biased
A、light power
B、laser
C、photons
D、electroluminescence
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