单项选择题

A．In the street.
B．In a family swimming pool.
C．In a public swimming pool.
D．In a kindergarten.
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单项选择题
A．Because they pollute air.B．Because they are natural hazards.C．Because they are increasing in numbers.D．Because people don’’t walk so often.
A．Because they pollute air.
B．Because they are natural hazards.
C．Because they are increasing in numbers.
D．Because people don’’t walk so often.
单项选择题
The passage mainly discusses ______.
A．Enron’’s misuse of partnerships
B．the failure of Enron in America
C．two cases of Enron’’ s top officials
D．Enron’’ s hidden financial situation
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