2. 外语
  3. The substance can be added to gasoline to accelerate the speed of automobiles.

The substance can be added to gasoline to accelerate the speed of automobiles.

admin2013-10-24  52
问题 The substance can be added to gasoline to accelerate the speed of automobiles.
选项 A、quicken
B、shorten
C、loosen
D、enlarge
答案A
解析 题意：这种物质能加到汽油里，使汽车加速。划线词accelerate意为“使加速”。A项quicken意为：加快，如：She stirred her soup to quicken its cooling．她搅动汤使它凉得快些。B项shorten意为：缩短，变短；例：The time of meeting can be shorten．开会的时间可以缩短。C项loosen意为：放松，松开；例：He reached up to loosen the scarf around his neck．他伸手松了松脖子上的围巾。D项enlarge意为：扩大，扩展，使增大；例：We are trying to enlarge our habitat．我们正在扩展自己的栖息地。故选A。
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