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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wickedness
单项选择题
A．Students are not required to attend regular class lectures.B．The professor videotapes class lectures for review.C．Classes are held at various locations throughout the area.D．Students receive credit for work experience.
A．Students are not required to attend regular class lectures.
B．The professor videotapes class lectures for review.
C．Classes are held at various locations throughout the area.
D．Students receive credit for work experience.
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