people have always been curious ______ how living things on the earth exactly began.
#27118
A
in
B
at
C
of
D
about
推荐题目
Mrs. Smith has tried many times to persuade her husband to give smoking, but Mr. Smith wouldn’t listen, Finally Mrs. Smith had to give and let him be.
#27170
A
in; in
B
up; up
C
up; in
D
in; up
This practice satisfies people of high moral standards psychologically and materially and ______ encourages other people’s enthusiasm.
#25795
A
on the contrary
B
in the meantime
C
from time to time
D
all at once
He took more than 200 photographs _____ the earth _____ total.
#25917
A
for; on
B
of; on
C
for; in
D
of; in
Nowadays，scientists are working hard to find a best way of treating addictions ________ drugs.
#26107
A
of
B
in
C
on
D
to