单项选择题

Older people are generally advised to______.

A．keep fit by going in for physical activities
B．keep mentally active by challenging their brains
C．maintain mental alertness through specific training
D．maintain a balance between individual and group activities

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热门试题

单项选择题

People who are cognitively healthy are those______.

A．who can remember large amounts of information
B．who are highly intelligent
C．whose minds are alert and receptive
D．who are good at recognizing different sounds

单项选择题

Which of the following describes the main idea of the passage

A．Computers are stupid and inefficient.
B．Computer errors are basically human errors.
C．Computer can help department stores update the price list.
D．Supermarket price errors are often made through dishonesty.