(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
He’s ____ working in Germany as a representative of a Chinese company.
#27116
A
at once
B
at a time
C
at present
D
on time
Tom , you ______ leave all your clothes on the floor like this!
#25704
A
wouldn’t
B
mustn’t
C
needn’t
D
might not
--- What shall we prepare for our picnic this weekend? --- Well, let’s discuss it ______ lunch.
#25472
A
at
B
with
C
over
D
by
You were charged________ignoring your duty. Who accused you_______such a crime?
#26042
A
with; to
B
of; with
C
with; of
D
for; of