Question

【题目】_____ you know how harmful smoking is， you'd bette get rid of it immediately．

A.UnlessB.SinceC.AlthoughD.Until

Answer 1

【答案】B

【解析】

句意：既然你知道吸烟有多有害，你最好马上把它扔掉。

A.除非；B.因为，既然；C.虽然；D.直到，根据_____ you know how harmful smoking is， you'd bette get rid of it immediately，可推出句意：既然你知道吸烟有多有害，你最好马上把它扔掉。所以选项B符合题意，故答案选B。