What is this text written for？
A. To tell people how important walking is.
B. To ask people to find gold.
C. To sell something.
查看答案
【B7】
A. in
B. a
C. out of
This message is a piece of news.
A. Right.
B. Wrong.
C. Doesn't say.
【B6】
A. take
B. have
C. play
Man has changed his physical environment with a view to______.
A. altering the physical features of the earth
B. modifying the face of the planet
C. improving his surroundings
D. bettering his way of life
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