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 team of doctors wanted to find out ______.

A．why certain people age sooner than others
B．how to make people live longer
C．the size of certain people’s brains
D．which people are most intelligent

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.