单项选择题

A．It is a very good insulator.
B．It is a kind of lubricant.
C．It is a new type of gasoline.
D．It is a wax coat.
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单项选择题
A．There are many disabled people in the world.B．The number of disabled people in India is the greatest.C．India has twice as many disabled people as in Canada.D．It is impossible to get an exact figure of the world’s disabled people.
A．There are many disabled people in the world.
B．The number of disabled people in India is the greatest.
C．India has twice as many disabled people as in Canada.
D．It is impossible to get an exact figure of the world’s disabled people.
单项选择题
A．Synthetic fuel.B．Solar energy.C．Alcohol.D．Electricity.
A．Synthetic fuel.
B．Solar energy.
C．Alcohol.
D．Electricity.
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