9、Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
A. after B. since C. before D. when
9、C
科目:高中英語 來源: 題型:單選題
科目:高中英語 來源: 題型:
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:高中英語 來源: 題型:
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
A.since B.a(chǎn)fter C.before D.when
科目:高中英語 來源: 題型:
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:高中英語 來源:2011-2012學(xué)年福建省廈門市五顯中學(xué)高一上學(xué)期期中考試英語試卷(帶解析) 題型:單選題
Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
A.when | B.a(chǎn)fter | C.before | D.since |
科目:高中英語 來源:2012-2013學(xué)年山東省德州市樂陵一中高一3月月考英語試卷(帶解析) 題型:單選題
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
A.since | B.a(chǎn)fter | C.before | D.when |
科目:高中英語 來源:2012-2013學(xué)年遼寧省錦州市錦州中學(xué)高一下學(xué)期第一次月考英語試卷(帶解析) 題型:單選題
Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.
A.since | B.a(chǎn)fter | C.before | D.when |
科目:高中英語 來源:2013-2014學(xué)年湖南省高三9月月考英語試卷(解析版) 題型:單項(xiàng)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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