题目内容
5.There is still a long way to go _____ the above questions could be answered.( )| A. | once | B. | when | C. | after | D. | before |
分析 在上面的问题得到回答之前仍然有很长的路要走.
解答 答案:D.根据选项 once一旦,when当…时,after在…后,before在…前,再结合句意在上面的问题得到回答之前仍然有很长的路要走.,可知此处缺少了一个引导时间状语从句的连接词,故D正确
点评 本题考查时间状语从句的连接词,在充分分析句型再结合语义的基础上便能选出正确答案,同时要注意其他选项的意思,
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