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  3. To help preserve ancient Egyptian monuments threatened by high water tables, a S

To help preserve ancient Egyptian monuments threatened by high water tables, a S

游客2025-02-25  14
问题 To help preserve ancient Egyptian monuments threatened by high water tables, a Swedish engineering firm has proposed installing pumps, perhaps solar powered, to lower the underground water level and dig trenches around the bases of the stone walls.
选项 A、to lower the underground water level and dig trenches
B、to lower the underground water level and to dig trenches
C、to lower the underground water level and digging trenches
D、that lower the underground water level and that trenches be dug
E、that lower the underground water level and trench digging
答案 C
解析 A中：由于and存在，表明dig与lower两个动作是并列关系。不过dig之前省了to，这在语法上是合理的，但逻辑上却理解不通。因为to lowered是表示installing pumps的目的，“装水泵来降低水位”，但把dig也放入此表目的动词不定式中：“装水泵是为了挖沟”，这与常理不符。再深入理解，才知dig这一动作是与install平行的，即“建议安装水泵和挖沟”。A、B中用dig原形不对；而在D、E中，D中前一个that从句只能是限定pumps，却起不到表目的的作用，后一个that从句对pumps进行修饰是不合情理的；E同理：that从句含义不对，且trench digging找不到与之平行的对象。
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