单项选择题

With temperature______ so rapidly, we could not go on with the experiment.

A．fell
B．fall
C．falling
D．fallen
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单项选择题
Becoming aware of our mother's age, not just in numbers of years but ______her psychological and physical state, often helps us to understand her better.
A．in spite of
B．on account of
C．in terms of
D．by means of
单项选择题
During the past years the ______of automobile accidents in New York City has decreased.
A．degree
B．quantity
C．number
D．amount
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