________about the result of the experiment，he still wants to give it a try．
#80216
A
Uncertain as he is
B
As uncertain he is
C
As he is uncertain
D
Uncertain is he as
推荐题目
In that month, he earned as much as, if ____ than, $40 000.
#84612
A
no more
B
not more
C
no much
D
not much
——Did you know any Chinese before you arrived in Beijing?——Never ________it, actually.
#80572
A
had I learned
B
have I learned
C
I have learned
D
I had learned
In order to make the separate family reunited，he did ______ them.（Which one of the following is wrong？）
#84353
A
all he could to help
B
everything possible to help
C
his best to help
D
what he could help
Only after they had discussed the matter for several hours ________ a decision.
#79568
A
they reached
B
did they reach
C
they reach
D
do they reach
Not until all the fish die in the river ____ how serious the pollution was.
#81114
A
did the villagers realize
B
the villagers realized
C
the villagers did realize
D
didn’t the villagers realize