Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
#92433
A
since
B
after
C
before
D
when
推荐题目
The new stadium being built for the next Asian Games will be the presentone。
#93338
A
as three times big as
B
three times as big as
C
as big as three times
D
as big three times as
News came from the school office ___ Wang Lin had been admitted to Beijing University.
#92844
A
which
B
what
C
that
D
where
I’m sorry to tell you it is nearly five months ___ smith got injured in the leg, but I think it won’t be long ____ he completely recovers.
#92797
A
after; when
B
before; since
C
that; when
D
since; before
As we all know，dark glasses can ________ the eyes from strong sunlight.
#92444
A
prevent
B
care
C
help
D
protect
Not until I began to work ____ how much time I had wasted.
#93171
A
didn’t I realize
B
did I realize
C
I didn’t realize
D
I realized