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【单选题】
With-out the engine, the automobile will not move, so the engine is often called the “heart” of the auto- mobile. 翻译A.
发动机给汽车动力。它能把燃油变成汽车的能量。
B.
它能使 更多的空气进入气缸，这就大大地增加了发动机的性能。
C.
没有发动机，汽车将不能移动，所以发动机通常被称作是汽车的心脏。
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