The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．

A．which      　　B．that         　　C．where   　　　 D．what

 

【答案】

 B

【解析】

試題分析：句意：湄公河委員會(huì)發(fā)現(xiàn)沒(méi)有證據(jù)表明，在上游水壩對(duì)下游的水流有影響。that 引導(dǎo)同位語(yǔ)從句，強(qiáng)調(diào)證據(jù)的內(nèi)容，從句不缺成分。所以B對(duì)。

考點(diǎn): 考查同位語(yǔ)從句的用法。

 

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