As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
#25598
A
it
B
what
C
which
D
that
推荐题目
Brown said he was by no means annoyed; ___________ he was glad to be able to make himself clearly understood.
#26486
A
all in all
B
on the other hand
C
on the contrary
D
in many ways.
Although the plan hasn’t been approved______ present, he insists______ carrying it out.
#25967
A
at; at
B
on; at
C
at; on
D
on; on