单项选择题

Questions 16 to 18 are based on the passage you have just heard.

A. They breathe fresh air.
B. They don’t have diseases common in cities.
C. They are in close touch with nature.
D. They eat a lot of fresh vegetable.
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单项选择题
A. Businessmen. B. TV set owners. C. TV station owners. D. The commercial TV system.
A. Businessmen. B. TV set owners.
C. TV station owners. D. The commercial TV system.
单项选择题
A. Stratigraphy is a river’s name.B. Stratigraphy is a description of the size of flood.C. Stratigraphy is the study of strata.D. Stratigraphy is another saying of geology.
A. Stratigraphy is a river’s name.
B. Stratigraphy is a description of the size of flood.
C. Stratigraphy is the study of strata.
D. Stratigraphy is another saying of geology.
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