_____ 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
We expect her to do the housework as well _________ after the children.
#31614
A
as look
B
as looking
C
and look
D
Looking
It was in the primary school ______ he studied ______ he knew how to be an honest person.
#33912
A
where, that
B
where, which
C
that, which
D
which, that
___ people from all countries are respected and different views and opinions are tolerated?
#34341
A
How
B
Why
C
What if
D
Whether
He tried his best to solve the problem, ______ difficult it was.
#33187
A
however
B
no matter
C
whatever
D
although
You have to take some necessities such as ropes, a flash, boots, ______ you may get lost in the mountain if going hiking.
#31411
A
so that
B
in order that
C
now that
D
in case