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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
#1choice (b) conveys this idea accurately, with the phrase "twice that number". see, "that number" must refer to an actual number cited in the sentence
choice (d) DOES NOT convey this idea. that choice says "twice AS MANY trucks", which means "twice as many trucks as were produced in 1914".
the problem is that the sentence doesn't tell us how many trucks were produced in 1914
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