单项选择题

A．People will have to rely on kudzu for a living.
B．They will soon be overgrown with kudzu.
C．They will become too hard to plough.
D．People will find it hard to protect the soil.
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单项选择题
An oil spill can pose a big problem to the environment.
A．Y
B．N
C．NG
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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