单项选择题

The doctor's tests show that ______.

A．our brains shrink as we grow older
B．the front section of the brain does not shrink
C．sixty-year-olds have better brains than thirty-year-olds
D．some people’s brains have contracted more than other people’s

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热门试题

单项选择题

The word subjects in paragraph 5 means ______.

A．something to be considered
B．branches of knowledge studied
C．persons chosen to be studied in an experiment
D．any member of a state except the supreme ruler

单项选择题

According to the passage, which people seem to age slower than the others

A．Lawyers.
B．Farmers.
C．Clerks.
D．Shop assistants.