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The river water was（ ）from its old course into a new channel where they were building the dam.
A.turned
B.switched
C.shifted
D.diverted
B.switched
C.shifted
D.diverted
参考答案
参考解析
解析：句意：在修筑这个水坝时，江水被改道进入新的水道。A.turn是常用词，词义较多，有转动，旋转，转方向，改变等意思；B.switch也有“转”之意，但它是指转轨，转变之意，如：to switch the conversation改变谈话内容；C.shift“转动，转换”，如：shift a burden from one shoulder to the other把担子从一个肩上换到另一个肩上；河流、公路等的“改道”通常用divert。
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