___ we know some basic knowledge concerning AIDS, we can protect ourselves from being infected.
#33392
A
If only
B
Even if
C
So long as
D
Unless
推荐题目
John thinks it won’t be long _______ he is ready for his new job.
#32415
A
when
B
after
C
before
D
since
(2013·安庆二检)Your future is in your hands. Your life is ________ you make of it.
#30533
A
how
B
which
C
that
D
what
These workers preferred to work extra hours at night_________leave the work until the next week.
#34165
A
other than
B
more than
C
instead of
D
rather than
