单项选择题

A．It’’s the ultimate cause of winds.
B．It causes vertical movements of air.
C．It reduces differences in air pressure.
D．It’’s used to predict weather patterns.
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单项选择题
A．It’’s far from where she lives.B．Her family went there without her.C．She doesn’’t know a lot about it.D．She’’s excited about going there.
A．It’’s far from where she lives.
B．Her family went there without her.
C．She doesn’’t know a lot about it.
D．She’’s excited about going there.
单项选择题
What does the author think of the Americans’’ view of their food
A．They overstate the government’’s interference with the food industry.
B．They are overoptimistic about the safety of their food.
C．They overestimate the hazards of their food.
D．They overlook the risks of the food they eat.
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