________ he found the idea interesting, it was too difficult to be of practical use.
#29985
A
While
B
Once
C
If
D
Until
推荐题目
____ you’ve grown up, you should be independent of your parents’ help.
#31023
A
Even though
B
In case
C
Just as
D
Now that
—Did he come back late last night? —No．It was not yet eight o’clock _____________ he arrived home．
#33901
A
before
B
that
C
until
D
when
_____we are closely united, we can surely overcome these difficulties.
#80342
A
As long as
B
As far as
C
If only
D
As good as
The old lady had two clever sons, ____ did a good job in the 2010 National College Entrance Exam, though.
#34183
A
none of them
B
both of whom
C
none of whom
D
neither of whom
______ children believe they can succeed, they will never become totally confident．
#30571
A
If
B
Since
C
Once
D
Unless