单项选择题

A．Alcohol.
B．Electricity.
C．Synthetic fuel.
D．Solar energy.
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单项选择题
A．An affluent one.B．A Ix)or one.C．A suburban one.D．A rural one.
A．An affluent one.
B．A Ix)or one.
C．A suburban one.
D．A rural one.
单项选择题
A．Students from America.B．Students from England.C．Students from Australia.D．Students from Japan.
A．Students from America.
B．Students from England.
C．Students from Australia.
D．Students from Japan.
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