_____ these experiments were successfully completed would we think of going into humans.
#31522
A
If only
B
So that
C
Only if
D
Even if
推荐题目
_________surprises us most is that she doesn’t even know _________the difference between the two lies.
#32018
A
What; where
B
All; which
C
What; that
D
That; where
How can you expect to learn anything ______ you spend all your time playing computer games?
#30744
A
unless
B
until
C
though
D
when
The days are gone ________ physical strength was all you needed to make a living.(2011·天津，10)
#30486
A
when
B
that
C
where
D
which