题目内容
（请给出正确答案）
[单选题]
_______sports may bring you not only happiness, but also new friendships.
A.Play
B.Playing
C.Played
D.Do
提问人：网友jimison
发布时间：2022-01-07
如搜索结果不匹配，请 
A、so
B、because
C、before
D、but
题目内容
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第2题
Display 24-hour clock: Implement 24-hour digital clock with timer 1 Display hour, minute and second information Modify time information Start/stop the clock Reset the clock
第3题
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.
第4题
Not only does asking questions at a meeting involve you in discussions, it is also a good way to demonstrate your professional knowledge.
A、会上提问不仅能使你参与到讨论中，而且还是一种展示你专业知识的好方法。
B、会上提问不仅可以讨论你所提到的问题，而且还可以很好地利用你的专业知识。
C、提问题不仅能使会议讨论你所关注的问题，还是一种表现你专业技能的好途径。
