在职攻硕英语考试

【单选题】The process of gaining or losing weight can be explained by comparing your body to your car.Both run (51) fuel, food for your body and gasoline for your car.Both (52) that fuel, first into heat, then energy, some of (53) is used to do work, and some emitted as waste.And (54) your car uses more energy when the engine is racing than when it is idling, (55) does your body use more energy when you are working hard than (56) you are resting.
For the purpose of this comparison, (57) , there is one significant difference between them. Your car cannot store fuel by turning it into (58) else; all gasoline not (59) remains as gasoline.But your body stores (60) 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.
A、what B、whichC、it
D、them
网考网参考答案：B
网考网解析：
[解析] 只有B选项可用与非限定性定语从句，来代表前边的先行词，其余三项均不可。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>