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  3. Consumption of domestic fuel oil______from 150 gallons a month at the height of winter to practically nothing in July and August

Consumption of domestic fuel oil______from 150 gallons a month at the height of winter to practically nothing in July and August

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问题 Consumption of domestic fuel oil______from 150 gallons a month at the height of winter to practically nothing in July and August.
选项 A、differs
B、shifts
C、varies
D、switches
答案C
解析 此题的四个选项都有“变化；不同”的意思，但其含义和用法又有所不同。vary“变化，改变"，它常用在vary from…to…的句式中，意为“由……到……情况不等”，如：The students inthis class vary in age from 18 to 21．这个班学生的年龄从18岁到21岁不等。可见此词最符合题意。differ(from)“不同；分歧”，如：Chinese differs greatly from English in pronunciation．汉语发音跟英语大不相同。shift“替换；转移”，如：shift the scenes“换布景”，shift a rifle from theright to the left shoulder“把枪从右肩转移到左肩”。switch“接通(on)；关断(off)；转换；改变(思路，话题等)”。
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