问题
单项选择题
People had been conscious of the problem before, but the new book made them aware of its______.
A．multitude
B．magnitude
C．altitude
D．latitude
答案
参考答案：B
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People had been conscious of the problem before, but the new book made them aware of its______.
A．multitude
B．magnitude
C．altitude
D．latitude
参考答案：B