【单选题】【消耗次数：1】
_______every week for several hours is good to keep healthy.
①
Exercise
②
To exercise
③
Should exercise
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相关题目
【单选题】
I almost spent two hours on this exercise. Find any misplaced modifier in the sentence.
①
two
②
almost
③
on this exercise
【多选题】
A: How often do you usually exercise?B:_______________ .
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Every morning
②
Once a day
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Very often
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You [填空] look for exercise opportunities all the time.
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should
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should to
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_________hand in his exercise-book before Monday?
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②
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Needs he to
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【单选题】
19. _______hand in his exercise book before Monday.
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Need he to
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③
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many
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【单选题】
A study suggests that even ____ exercise may lead to reduced iron in the blood of women.
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modern
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moderate
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excess
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随机题目
【单选题】
三相电动机启动时，利用自耦变压器来降低加在电动机定子绕组上的起动电压。待电动机起动完成后，再使电动机与自耦变压器脱离，从而在全压下正常运行的方式是（ ）。
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定子绕组串接电阻降压启动
②
自耦变压器降压启动
③
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延边△降压启动