单项选择题

A．A great number of respondents.
B．Representative sample people.
C．Meaningful questions.
D．Detailed information.
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单项选择题
A．She didn’t call to explain at all.B．She didn’t like to come for dinner.C．She didn’t have time to make the call.D．She hoped to come for dinner next time.
A．She didn’t call to explain at all.
B．She didn’t like to come for dinner.
C．She didn’t have time to make the call.
D．She hoped to come for dinner next time.
单项选择题
A．In a mountainous area.B．Close to a calm lake.C．High up in the sky.D．Where a lot of water is sprayed.
A．In a mountainous area.
B．Close to a calm lake.
C．High up in the sky.
D．Where a lot of water is sprayed.
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