单项选择题

When Google and Facebook were established, the founders were still （）

A．in high school
B．in the army
C．in primary school
D．at college

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单项选择题
What is the main idea of the passage（）

A．New York is a city of glass towers.
B．Glass tower are dangerous for migrating birds.
C．New York adopted new safety standards for buildings.
D．Glass towers are a new trend in the United States.
单项选择题
With no one to turn over for help in such a frightening situation, she was in despair.
A．With
B．to turn over
C．frightening
D．in despair
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