Scientists are convinced ________ the positive effect of laughter ________ physical and mental health.
#25675
A
of; at
B
on; at
C
by; in
D
of; on
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___ present, the biggest nature park ___ milu ___ in Chian is the Nanhaizi Milu Park , ____ is about 20 kilometres south of Beijing.
#28195
A
At, of, deer, that
B
At, for, deer, which
C
In, for, deer, which
D
At, with, deer, that
His money had not brought happiness and perhaps it had contributed________ his strange sense of values.
#27550
A
up
B
for
C
as
D
to