单项选择题
A ______ is a variety of language that serves as a medium of communication among groups of people for diverse linguistic backgrounds.
A．lingua franca
B．register
C．creole
D．dialect
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单项选择题
New Zealand is situated about 1,500 km
A．north-west of Australia.
B．south-east of Australia.
C．north-east of Australia.
D．south-west of Australia.
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单项选择题
Which is the largest freshwater lake in the United States
A．Lake Huron.
B．Lake Erie.
C．Lake Ontario.
D．Lake Superior.
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