The keeper of the spring cleared away the leaves and branches, and wiped away the silt(淤泥) that would _______ have choked and polluted the fresh flow of water.

A. thus B. otherwise

C. therefore D. later

B

【解析】考查副詞辨析。 A. thus“所以”； B. otherwise“否則”； C. therefore“所以”； D.later“后來(lái)”，該句句意為“這個(gè)泉水的守護(hù)者清除了樹(shù)葉和樹(shù)枝，挖掉了‘如果不去掉將會(huì)’堵塞污染清澈水流的淤泥�！彼栽摽者x擇B. otherwise相當(dāng)于if it hadn’t been wiped away.

考點(diǎn)：副詞辨析

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