单项选择题

What does the word "sedentary (Para. 2)" mean

A．sit still.
B．eat too much.
C．study very hardh.
D．passive thinking.
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单项选择题
According to Prof Prentice, what are the reasons for the change M Our shape
A．We eat too much and refuse to do physical exercises.
B．High -energy foods are easy to get and technology develops last.
C．High -energy foods arc the main diet and we use technology.
D．High -energy foods are easy to get and we consume less energy.
单项选择题
Obesity increases the risk factor of ______.
A．diabetes, short sight, cancer, strokes
B．diabetes, cancer, strokes, psychosocial illness
C．cancer, strokes, fatty, heart disease
D．strokes, heart disease, diabetes, headache
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