单项选择题

A．Because the Earth is heavily polluted.
B．Because nature cannot recycle its resources.
C．Because there are more and more people living on the Earth.
D．Because no more new resources can be added.
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单项选择题
A．A television.B．A washing machine.C．A computer.D．A fridge.
A．A television.
B．A washing machine.
C．A computer.
D．A fridge.
单项选择题
A．To apply to study in America is quite easy.B．To apply to study in America is quite difficult.C．To apply to study in America is quite complicated.D．To apply to study in America is quite simple.
A．To apply to study in America is quite easy.
B．To apply to study in America is quite difficult.
C．To apply to study in America is quite complicated.
D．To apply to study in America is quite simple.
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