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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
D&E.the last two choices, however, are problematic, because "twice as many trucks" must mean exactly that--i.e., twice as many trucks. as in, 2 乘以(previous # of trucks).
this sentence contains no information about the previous number of trucks; there's only a combined figure for trucks and cars. so, that doesn't work.
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