2. 外语
  3. Steamboats began to sail up and down the Mississippi River at the beginning of the 19th century, which contributed a lot the are

Steamboats began to sail up and down the Mississippi River at the beginning of the 19th century, which contributed a lot the are

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问题 Steamboats began to sail up and down the Mississippi River at the beginning of the 19th century, which contributed a lot the areas along the river.
选项 A、to develop
B、to being developed
C、to be developed
D、to developing
答案D
解析 本题考查动词与介词搭配。本句是非限定性定语从句，which指代前句，从句中contribute与介词to搭配，后接动名词，而且沿河地区与发展是动宾关系，所以应选D．to developing。contributed a lot to意思是：对…做出很多贡献，极大地有助于…。这句话的意思是：十九世纪初期，汽轮开始在密西西比河来来往往地航行，这大大地促进了沿河地区的开发。
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大学英语四级

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