单项选择题

A．It will rise an average of 1 foot.
B．It will be worn down an average of 1 foot.
C．It will be worn down to sea level.
D．It will lose 730 million tons of solid matter.
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单项选择题
A．Having kids wash the dishes.B．Asking kids to go to bed early.C．Substituting physical activity for something kids hate.D．Encouraging kids to play with their friends.
A．Having kids wash the dishes.
B．Asking kids to go to bed early.
C．Substituting physical activity for something kids hate.
D．Encouraging kids to play with their friends.
单项选择题
A．A library.B．A publishing house.C．A museum.D．A bookstore.
A．A library.
B．A publishing house.
C．A museum.
D．A bookstore.
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