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题库 / Prep2007E1-SC-2
Organized in 1966 by the Fish and Wildlife Service, the Breeding Bird Survey uses annual roadside counts along established routes for monitoring of population changes of as many as, or of more than 250 bird species, including 180 songbirds.
for monitoring of population changes of as many as, or of
to monitor population changes of as many, or
to monitor changes in the populations of
that monitors population changes of
that monitors changes in populations of as many as, or
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1) 用to do结构表达目的更加有效,实战中用for doing表达目的的选项一般都做为迷惑选项，和to
do进行对比
2) GMAT考试中经常出现将相等比较as...as和more...than...形式比较合并在一起写的错误或者故
意复杂化的表示方法;正确表达应该是:at least as great as或者as great as or greater than，或者
直接用greater than。
(B)as many结构不完整,应改为of as many as or more than,(A)of as many as, or of more than结构复杂笨拙,改为
of as many as or more than更好.
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