单项选择题

A．It can help people to become literate within a short time.
B．It was originally designed for teaching the English language.
C．It enables the learners to master a language within three months.
D．It is effective in teaching any alphabetical language to Brazilians.
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单项选择题
A．Whether they can afford the cost of the trip.B．Whether someone will take care of their house, garden and pets while they are away.C．Whether they should go by air or by sea.D．Whether the trip will keep them away from home for too long.
A．Whether they can afford the cost of the trip.
B．Whether someone will take care of their house, garden and pets while they are away.
C．Whether they should go by air or by sea.
D．Whether the trip will keep them away from home for too long.
单项选择题
A．Because it’’s prohibited by the government.B．Because it’’s more inefficient than other alternative fuels.C．Because it will destroy the ozone.D．Because it costs a lot to mass-produce.
A．Because it’’s prohibited by the government.
B．Because it’’s more inefficient than other alternative fuels.
C．Because it will destroy the ozone.
D．Because it costs a lot to mass-produce.
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