单项选择题

A．Experimental medicines.
B．Special treatment centers.
C．Flexible working schedule.
D．Innovative physical exercises.
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单项选择题
A．She went shopping.B．She did some sewing.C．She repaired her car.D．She bought some tobacco.
A．She went shopping.
B．She did some sewing.
C．She repaired her car.
D．She bought some tobacco.
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