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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
A. the numbers错误， twice后面要跟单数的number，即twice the number；但是改为the number后，指代特定的数字还是用that number更为明确
B. Correct； that number指代前面总和的469000，如果是the number，没有指代对象，似乎说是the number of trucks
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