单项选择题

A．To improve her computer program.
B．To find out their attitudes towards food.
C．To find out details she can make use of.
D．To predict what food they’ll like in the future.
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单项选择题
A．Separating the fire.B．Reducing the heat.C．Removing the fuelD．Cutting off the oxygen.
A．Separating the fire.
B．Reducing the heat.
C．Removing the fuel
D．Cutting off the oxygen.
单项选择题
A．Skiing.B．Skating.C．Swimming.D．Jogging.
A．Skiing.
B．Skating.
C．Swimming.
D．Jogging.
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