These problems, ________, will seriously affect the growth of teenagers and even the nation’s future.
#80148
A
not if solved properly
B
if solved properly
C
if not solved properly
D
not if properly solved
推荐题目
There are eight tips in Dr.Roger's lecture on sleep，and one of them is：________ to bed early unless you think it is necessary.
#80053
A
doesn't go
B
not to go
C
not going
D
don't go
The achievements of the greatest minds in science could never have been reached________ the patient work of hundreds of others．
#83215
A
were it not for
B
had it not been because
C
had it not been for
D
if it had not been
When help, one often says, “Thank you”, or “It’s kind of you．”
#81901
A
offering
B
to offer
C
to be offered
D
offered
(2013·高考湖南卷)Not once________to Michael that he could one day become a top student in his class.
#80034
A
occurred it
B
it did occur
C
it occurred
D
did it occur