单项选择题

A．A surgical doctor.
B．A university professor.
C．A headmaster.
D．A psychological consultant.
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单项选择题
A．Science is less advanced than medicine.B．Philosophy is more useful than science.C．Science is ahead of philosophy.D．Science is more useful than philosophy.
A．Science is less advanced than medicine.
B．Philosophy is more useful than science.
C．Science is ahead of philosophy.
D．Science is more useful than philosophy.
单项选择题
A．Orlon.B．Artificial silkC．Linen.D．Fur.
A．Orlon.
B．Artificial silk
C．Linen.
D．Fur.
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