Scientists are convinced _____the positive effect of laughter _____physical and mental health．
#26778
A
of ;at
B
by; in
C
of ; on
D
on ;at
推荐题目
I guess we've already talked about this before but I'll ask you again just ________.(2010·浙江)
#25106
A
by nature
B
in return
C
in case
D
by chance
When he knew the disappointing result of the exam, he seemed quite _______.
#27500
A
fed up
B
cast down
C
in vain
D
in amazement
When you are on the bus to work in the morning, smile to the people sitting beside you, you will get his smile ______.
#26128
A
in place
B
in need
C
in return
D
in relief
—I like coffee with nothing in it. What about you? —I prefer coffee ________ sugar.
#28588
A
to
B
for
C
with
D
than
The man is ________ a serious nervous breakdown because he is unable to deal with pressure from daily life.
#26292
A
in front of
B
in favor of
C
on behalf of
D
on the edge of