________ these experiments were successfully completed would we think of going into humans.
#80199
A
If only
B
Only if
C
So that
D
Even if
推荐题目
__________you were coming today, I’d have met you at the railway station.
#80983
A
Have I known
B
Had I known
C
I have known
D
I had known
I am certain by no means ________ his word since he has promised an amount of money to the poor.
#79876
A
he will break
B
will he break
C
broke
D
did he break
______, Guo Mingyi makes his effort to help those in poverty.
#80578
A
Not rich although he is
B
In spite of not rich
C
Though not rich
D
As he is not rich
— Have you got any particular plans for the coming holiday? — Yes, _____, I’m going to visit some homes for the old in the city.
#79848
A
If ever
B
If busy
C
If anything
D
If possible
, the farmer continued working in the field.
#79918
A
As tired he was
B
As he was tired
C
Tired as he was
D
So tired was he