单项选择题

In order to live a longer life, what should people do（）

A．Do as much exercises as we can.
B．Grow flowers.
C．Drink a cup of coffee everyday.
D．Eat a balanced diet.

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单项选择题
From which college did Jefferson graduate（）

A．Washington College.
B．The University of Virginia.
C．College of William and Mary.
D．Shadwell College.
单项选择题
What does a sundial measure according to the passage（）

A．It measures the length of a day and a night.
B．it measures the movement of the sun each day.
C．It measures the passing of hours, minutes and perhaps seconds.
D．It measures the shadow of the stick across the flat surface of the sundial.
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