Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.


Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve

Concerns about public health have led to the construction of three separate sewer systems between 1876 and 1904 to serve

Concerns about public health have led between 1876 and 1904 to the construction of three separate sewer systems for serving

There were concerns about public health leading to the construction between 1876 and 1904 of three separate sewer systems serving

There were concerns leading between 1876 and 1904 to the construction of three separate sewer systems for serving

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考题讲解

题目分析：
本题中的there be句型没有问题，虽然(A)(B)(C)和(D)(E)的意思不同，但是此两者均没有逻辑的错误，不能作为排除的方式。

选项分析：

A选项：Correct. 本选项在语法和逻辑上均是正确的。

B选项：本选项中between 1876 and 1904短语放在了three separate sewer systems的身后，由于定语的就近修饰原则，所以其修饰的是three separate sewer systems，而不是construction。在逻辑上，应该是三个排污系统与1876年至1904年被建造，而不是系统本身在1876年至1904年（建造好之后，这个系统应该会用一段时间，不止用28年吧）。

C选项：本选项中between 1876 and 1904变为了have led的状语。但是，由于have led是现在完成时，所以应该表示“到现在为止”，而不是仅在过去的某个时间，所以此处是矛盾的；另外，介词短语for serving应改为不定式短语to serve，这点考查了不定式和ing的区别，用之于本题，主句“担心引起三个排污系统的建造”的发生会直接影响“排污系统服务于波士顿”的发生，即，是建造了三个排污系统使得了这三个排污系统能服务于波士顿，因此，应该用不定式短语。

D选项：ing短语serving应改为不定式短语to serve同选项(C)。

E选项：for serving错误同(C)。

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