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2017年6月英語四級閱讀真題及答案 第3套 選詞填空(答案)

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As if you needed another reason to hate the gym, it now turns out that exercise can exhaust not only your muscles, but also your eyes. Fear not, however, for coffee can perk them right up again. During vigorous exercise, our muscles tire as they run out of fuel and build up waste products. Muscle performance can also be affected by a phenomenon called “central fatigue,” in which an imbalance in the body’s chemical messengers prevents the central nervous system from directing muscle movements effectively. It was not known, however, whether central fatigue might also affect motor systems not directly involved in the exercise itself—such as those that move the eyes. To find out, researchers gave 11 volunteers a carbohydrate solution either with a moderate dose of caffeine—which is known to stimulate the central nervous system—or as a placebo without, during 3 hours of cycling. After exercising, the scientists tested the cyclists with eye-tracking cameras to see how well their brains could still control their visual system. The team found that exercise reduced the speed of rapid eye movements by about 8%, preventing their ability to capture new visual information. The caffeine—the equivalent of two strong cups of coffee—was sufficient to counteract this effect, with some cyclists even displaying increased eye movement speeds, the team reports today in Scientific Reports. So it might be a good idea to get someone else to drive you home after that marathon.

26.O vigorous
27.I phenomenon
28.E effectively
29.G involved
30.M solution
31.D cycling
32.C control
33. J preventing
34. N sufficient
35. F increased
重點單詞   查看全部解釋    
effectively [i'fektivli]

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adv. 事實上,有效地

 
affected [ə'fektid]

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adj. 受影響的,受感動的,受疾病侵襲的 adj. 做

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sufficient [sə'fiʃənt]

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adj. 足夠的,充分的

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imbalance [im'bæləns]

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n. 不平衡,失調

 
equivalent [i'kwivələnt]

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adj. 等價的,相等的
n. 相等物

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carbohydrate ['kɑ:bəu'haidreit]

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n. 碳水化合物,醣

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moderate ['mɔdəreit,'mɔdərit]

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adj. 適度的,穩健的,溫和的,中等的
v.

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solution [sə'lu:ʃən]

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n. 解答,解決辦法,溶解,溶液

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dose [dəus]

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n. 劑量,一劑,一服
vt. 給 ... 服

 
vigorous ['vigərəs]

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adj. 精力充沛的,元氣旺盛的,有力的

 
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