单项选择题

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单项选择题
A. It is expected to be a $3 billion industry.B. It is expected to be a $13 billion industry.C. It is expected to be a $1.13 billion industry.D. It is expected to be a $1.3 billion industry.
A. It is expected to be a $3 billion industry.
B. It is expected to be a $13 billion industry.
C. It is expected to be a $1.13 billion industry.
D. It is expected to be a $1.3 billion industry.
单项选择题
C
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