Scientists say it will be five or six years __________ it is possible to test t
题型:不详难度:来源:
Scientists say it will be five or six years __________ it is possible to test this medicine on humans.A.after | B.before | C.since | D.when |
|
答案
B |
解析
试题分析:句意:科学家说还需要六年的时间才有可能在人身上实验这种药物。A在……之后;B在……之前;C自从;D当……时候。固定句型:it will be +时间段+before从句“还要多久才”。答案选B。 |
举一反三
______ we have enough evidence (证据), we can"t win the case.A.Once | B.As long as | C.Unless | D.Since |
|
He was about to tell me the secret ______ someone patted him on the shoulder. |
Before long the Greens moved to a bigger city ____ the children could attend a better high school.A.even if | B.so that | C.now that | D.as if |
|
— Will you go out to play for a while, Kate? —Not I finish all of my homework.A.when | B.if | C.after | D.unless |
|
It is already well understood causes the global warming. |
最新试题
热门考点