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题库 / Prep2008E2-SC-222
In 1914 a total of 469,000 cars and trucks were produced in the United States, but in 1929 almost twice the numbers of trucks alone came off the assembly lines.
the numbers of trucks alone
that number of trucks alone
the number of trucks by themselves
as many trucks themselves
as many trucks by themselves
请看讲解视频
卡车的数量既可以是 trucks' numbers 也可以是trucks‘ number
the numbers of trucks表示卡车的数量，没有说是什么时候的数量，也没用与前面提到的469,000扯上关系
alone类似于bu，作副词，表示仅仅，只。
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