convert on something A. Both【T1】______ that fuel, first into heat B. Both run【T2】______ fuel C. turning it into【T3】______ else

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问题 convert
on
something
A. Both【T1】______ that fuel, first into heat
B. Both run【T2】______ fuel
C. turning it into【T3】______ else
    The process of gaining or losing weight can be explained by comparing your body to your car.【T4】______ , food for your body and gasoline for your car.【T5】______ , then energy, some of which is used to do work, and some emitted as waste. And just as your car uses more energy when the engine is racing than when it is idling, so does your body use more energy when you are working hard than that you are resting.
    For the purpose of this comparison, however, there is one significant difference between them. Your car cannot store fuel by【T6】______; all gasoline not consumed remains as gasoline. But your body stores excess energy as fat. When the gas tank is completely empty, the car won’t run; but your body can burn fat to provide more energy.
【T5】

选项 A、 
B、 
C、 

答案A

解析 空格后一句的意思为:然后再转换成能量。这些能量中的一部分用来支持正常的运作,另一部分则被当作废物排放掉。根据上下文语境可知,A项“两者都是先把燃料转化为热能”符合题意。所以,答案是A。
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