单项选择题

The Japanese doctors find out that ______.

A．our brains are aging too early
B．our brains are not getting enough exercise
C．Japanese farmers are ageing at a relatively early age
D．Japanese farmers are losing their ability to think

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热门试题

单项选择题

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

A．Shop assistants.
B．Lawyers.
C．Professors.
D．Doctors.

单项选择题

We should not rely on pocket calculators because ______.

A．they are not clever as our brains
B．they are harmful to our brains
C．we need to use our brains to prevent it from shrinking
D．we could not get enough practice on mathematics