题目内容

听对话,回答1-3题。
1. Electricity is very            to us according to what the man said.
[     ]
A. dangerous
B. important
C. unusual
2. We can produce electricity from coal,            , wind, sun, water,even animal waste and so on.
[     ]
A. nuclear energy
B. oil
C. gas
3. The woman will study hard             much more electricity.
[     ]
A. to reduce
B. to produce
C. to find more new ways to produce
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