| 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 |
科目:高中英语 来源: 题型:单选题
科目:高中英语 来源: 题型:
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?
科目:高中英语 来源: 题型:
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
科目:高中英语 来源: 题型:
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
科目:高中英语 来源:2011-2012学年福建省厦门市五显中学高一上学期期中考试英语试卷(带解析) 题型:单选题
Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
| A.when | B.after | C.before | D.since |
科目:高中英语 来源:2012-2013学年山东省德州市乐陵一中高一3月月考英语试卷(带解析) 题型:单选题
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 |
科目:高中英语 来源:2012-2013学年辽宁省锦州市锦州中学高一下学期第一次月考英语试卷(带解析) 题型:单选题
Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.
| A.since | B.after | C.before | D.when |
科目:高中英语 来源:2013-2014学年湖南省高三9月月考英语试卷(解析版) 题型:单项填空
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
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