单项选择题

A．How to properly display the foods.
B．How to keep perishable food frozen.
C．How to keep the shelves rotating.
D．How to make the adjustable shelves.
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单项选择题
A．The ground is too hard for planting.B．Transportation is expensive.C．There has been too much rain in the Yangtze River valley this year.D．The planters are experimenting with new crops.
A．The ground is too hard for planting.
B．Transportation is expensive.
C．There has been too much rain in the Yangtze River valley this year.
D．The planters are experimenting with new crops.
单项选择题
A．The English Permanent Settlements in North America.B．The Pushing Social Force.C．The Emergence of Bourgeoisie.D．The Changing Outlook on Life.
A．The English Permanent Settlements in North America.
B．The Pushing Social Force.
C．The Emergence of Bourgeoisie.
D．The Changing Outlook on Life.
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