题目内容
（请给出正确答案）
[单选题]
___ recently ___ scientists known something about AIDS.
A.Not until…have
B.Until…did
C.Not until…do
D.Until…have
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.Not until…have
B.Until…did
C.Not until…do
D.Until…have
如果结果不匹配，请 联系老师 获取答案
更多“___ recently ___ scientists kn…”相关的问题
A.comprehensiveness
B.scientificty
C.far-reaching
A.involved
B.evolved
C.revolved
D.revolted
The heating system has recently been______to make it more efficient.
A．modified
B．changed
C．corrected
D．replaced
Only recently he began ______ (realize)that he was wrong.
