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
Benin Mayer Alcott based the principal characters of her book Little Women on her sisters and herself.
A．original
B．central
C．subjunctive
D．oriental
单项选择题
The driver stopped his car so abruptly that he was hit by the cab behind him.
A．impolitely
B．violently
C．suddenly
D．maladroitly
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