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
He hated the war so much that he decided to leave the army _____.
#29163
A
for long
B
once in a while
C
for good
D
once upon a time
This book _________12 units, _________ the unit of Music.
#25997
A
contains, including
B
includes, containing
C
contains, includes
D
including, contains
----What can I do for you,sir? ----I”d like to see the manager ________of sales department.
#26084
A
in the charge
B
in charge
C
is in charge
D
under charge