— __________ when has the country been open to international trade?— 1978, I suppose.
#28614
A
Since
B
In
C
From
D
After
推荐题目
Not all of us know the difference ________ wheat, oats and barley.
#28837
A
among
B
between
C
from
D
in
______ giving up, he went on with his research,got his PhD and married the girl.
#28974
A
Without
B
Except
C
Instead of
D
But for
Should development be stopped________________nature?
#26708
A
in honor of
B
in search of
C
in favor of
D
in memory of
Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.
#27470
A
on,try on
B
with, test on
C
on ,test out
D
with,carry out