考博考试

【单选题】The suggested causes of a given phenomenon cannot always be independently observed, and so it is hard to ______ the possibility of there being explanations alternative to the one proposeD、
A．account for
B．rule out
C．guard against
D．do with
网考网参考答案：B
网考网解析：
account for解释；guard against防备；do with可以用have/be to do with something“与某事有关”；上述三项，均与题义不符。rule out“排除……”，用在此句中，意思是“很难排除其他一些可能的解释”，意思通顺。 查看试题解析出处>>