At the meeting they discussed three different    ____  to the study of mathematics.
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A
approaches
B
means
C
methods
D
ways
推荐题目
Anne felt nervous ____ she gave a speech in front of so many students.
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A
for the first time
B
at the first time
C
the first time
D
at first
There has been ____ accidents on this part of road. 
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A
a number of
B
a great deal of
C
a series of
D
plenty of