Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.[ ]A. since B. after C. before D. when-高中英语-n多题

◎ 题干

Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.

[ ]

A. since
B. after
C. before
D. when

◎ 答案

查看答案

◎ 解析

查看解析

◎ 知识点

根据n多题专家分析，试题“Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.[ ]A. since B. after C. before D. when…”主要考查了你对【从属连词】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

◎ 相似题

与“Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.[ ]A. since B. after C. before D. when”考查相似的试题有：

● _______every member has arrived, let’s set about _____ the plan for the next five years.A．Since; to work outB．Because; work outC．Now that; working outD．For;● I will carry out the plan _____ there is much difficulty ahead.A．as ifB．even ifC．ifD．unless ● -What are you going to do this afternoon?-I'll probably go for a walk later on＿＿＿it stays fine．A．as far asB．so long asC．even ifD．as if ● I toured the Great Wall，I was deeply impressed with the beautiful scenery．A．For the first timeB．At firstC．The first time D．It was the first time ● It’s uncertain ____ the fashion show will be held next week.A．whatB．whyC．whetherD．that