单项选择题

From the passage, we know ______.

A．Panama was ruled by three countries for 400 years
B．The United States controlled the Panama Canal for 22 years
C．The Panama Canal means a great deal to Panama's economy
D．Panama is the smallest county in Central America

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单项选择题

--Do you know who invented ______ telephone--No, But it is really ______ telephone

A．the; the
B．/; the
C．the;/
D．the; a

单项选择题

Which is the best title for this passage

A．A Writer Wanted a Wife
B．A Good Idea to Be Rich
C．A Clever Idea to Make Himself Famous
D．An Ad. for a Wife