________, no one is sure who discovered America .
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A
As a matter of fact
B
As the fact of matter
C
As the matter of fact
D
As a factual matter
推荐题目
  – How soon could they cover the distance?--- ____________.
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A
For two hours
B
During the two hours
C
After two hours
D
In two hours
 The hotel has been enlarged; ____, it’s service is improving.
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A
as a result
B
on the other hand
C
in addition
D
as well as
The company takes in any good workers _______ sex, age or background.
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A
regardless of
B
on account of
C
in terms of
D
in spite of