单项选择题

案例分析题 The professor's tests show that ______.

A．our brains shrink as we grow old
B．the front section of the brain does not shrink
C．seventy-year-olds have better brains than sixty-year-olds
D．brain contraction may vary among people of the same age

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热门试题

单项选择题

Faulkner's research findings are based on______.

A．a survey of farmers in northern Japan
B．tests performed on a thousand old people
C．the study of brain volumes of different people
D．the latest development of computer technology

单项选择题

Professor Faulkner wanted to find out ______.

A．how people's brains shrink
B．the way of making people live longer
C．the size of certain people's brains
D．why certain people aged sooner than others