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
推荐题目
More and more high-rise buildings have been built in big cities________ space.
#25810
A
in search of
B
in place of
C
for lack of
D
in memory of
Mr.Smith, there's a man at the front door who says he has news for you ________ vital importance.
#25107
A
of
B
with
C
in
D
from
He is always helping people without expecting anything _____.
#26277
A
in common
B
in turn
C
in danger
D
in return
The tomato is the world's most popular fruit. _______ the pumpkin, botanically speaking it is a fruit, not a vegetable.
#28641
A
Just like
B
Just as
C
Such as
D
For example
Look! Some workers are busy building a monument, one ______ the national hero
#25501
A
in memory of
B
in favor of
C
in need of
D
in place of