单项选择题

The degree of downward slope of a beach depends on its composition of deposits as well as on the action of waves across its surface.

A．sentiment
B．sediment
C．semester
D．segment
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单项选择题
The municipal planning commission said that their financial outlook for the next year was optimistic. They expect increased tax ______.
A．privileges
B．efficiency
C．revenues
D．validity
单项选择题
A divorcee, Tom is the sole provider in a typical single parent family.
A．religious
B．spiritual
C．exclusive
D．chief
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