Vitamin D helps our bodies make a special chemical,and this special chemical, ____ , affects our brains,making us feel happy.
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A
in turn
B
in particular
C
in advance
D
in short
推荐题目
The discovery of these tombs is _______ for scholars’ studying the history of the Tang Dynasty.
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A
of very important
B
great importance
C
of great significance
D
great significant
This is not an economical way to get more water; _________,it is very expensive.
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A
on the contrary
B
on the other hand
C
in a word
D
rather than
 I left for the office earlier than usual this morning _____ traffic jam.
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A
in line with
B
in case of
C
for the sake of
D
at the risk of