单项选择题

A．Two million.
B．Three million.
C．Five million.
D．Six million.
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单项选择题
A．Beginners.B．Intermediate learners.C．Learners of special English.D．Beginners knowing ABC.
A．Beginners.
B．Intermediate learners.
C．Learners of special English.
D．Beginners knowing ABC.
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