(2014·烟台市第二次诊断)Vitamin D helps our bodies make a special chemical，and this special chemical，________，affects our brains，making us feel happy.
#25148
A
in turn
B
in particular
C
in advance
D
in short
推荐题目
The flight to Antarctica was delayed by the lack_______ information about the weather conditions there.
#26228
A
in
B
from
C
for
D
of
The study you have been making________the ancient Chinese culture is an interesting job.
#28279
A
to
B
for
C
of
D
from
---When did you arrive here?---Just ______when you left.
#25548
A
in the same morning
B
on the night
C
at the night
D
on very afternoon
It was clear that the small grocer was _____ people he owed money to.
#28364
A
at the expense of
B
at the risk of
C
in the way of
D
at the mercy of