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Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
#26213
A
of;at   
B
by;in
C
of;on   
D
on;at
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The dog was approaching ________the garden when she ran out.
#25159
A
to
B
towards
C
for
D
/
  in his last experiment,he got the same result.
#28110
A
As
B
Like
C
For
D
Since
(2014·兰州名校阶段检测)Many people believe that hunger is only a problem in the developing countries.________,it is a problem all over the world.
#25143
A
For one thing 
B
In addition
C
As well 
D
On the contrary
—Charlie has been nowhere       for three days. What has happened to him?—Didn’t you know he had gone to Hong Kong?
#25824
A
in sight
B
in place
C
in face
D
in use
Expo 2010 Shanghai has been an extraordinary celebration of global business and culture, and it has also provided a fantastic model for Expo 2015 Milan ____________managing and organizing events of this scale. 
#27009
A
in return for
B
in terms of
C
in exchange for
D
in spite of
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