题目

阅读理解 Jeremy grew up being activein sports. But he never thought about healthy eating until he found himselfgaining weight several years after college. Last week, Jeremy hit a turningpoint when he found that he was too out of shape to play in a company footballteam. He decided to change his eating habits. The first step Jeremy tooktoward healthy eating was to stop going to fast-food restaurants. Jeremy usedto eat fast food as often as 4 times a week. To his surprise, he found thatgiving up fast food wasn't that difficult. Now, he says, I don't even like itanymore. When Jeremy does go ou电能的利用给人们的生产、生活带来了很多方便,但如果使用不当也会给人们带来危害,下列做法中可能给人们带来危害的是: A.更换灯泡或维修电路时要先断开电源; B.开关要接在火线上; C.三孔插座接地线要保证良好接地; D.暂时没有合适的保险丝,短时间内可以用细钢丝代替.
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