单项选择题

A．34%.
B．41%.
C．17%.
D．8%.
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单项选择题
A．anemia.B．shingles.C．hepatitis.D．HIV.
A．anemia.
B．shingles.
C．hepatitis.
D．HIV.
单项选择题
A．customer and estate agent.B．customer and travel agent.C．customer and shop assistant.D．customer and lawyer.
A．customer and estate agent.
B．customer and travel agent.
C．customer and shop assistant.
D．customer and lawyer.
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