单选题_____AthereforeBhenceCthereafterDhowever

单选题
_____
A

therefore

B

hence

C

thereafter

D

however


参考解析

解析:
语篇题。此处的意思是“虽然色盲是一种病症,但患有色盲的人,生活并不会受到太大的影响”。however表示语义转折,为正确选项。

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