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
推荐题目
–He is from America and majors in Chinese herbal medicine in China.–____.
#81368
A
So does his girlfriend
B
It’s the same as his girlfriend
C
It’s the same with his girlfriend
D
So is his girlfriend
Next door to ours _________, who has just returned form abroad.
#82591
A
where lives an old man
B
where does an old man live
C
lives an old man
D
does an old man live
It was only when I reread his poems recently ______ I began to appreciate their beauty.
#81867
A
that
B
until
C
then
D
so
— I hear Johnson was badly injured in the accident. — ____, let’s go and see him.
#84132
A
What’s more
B
If so
C
Where possible
D
When necessary
— How was his explanation at the court?— So convincing ______ that I entirely approved of it.
#81546
A
sounds it
B
it sounds
C
does it sound
D
did it sound