单项选择题

What does "sagging"(para.5) probably mean

A．Decline.
B．Become more active.
C．Develop.
D．Become stronger.

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单项选择题

In this passage, the author mainly discusses ______.

A．research about mental function
B．gradual loss of mental skills with normal aging
C．the relationship between mental function and skills
D．effective ways to keep intellectual vigor

单项选择题

According to the author, which of the following statements is true

A．Wisdom may be developed with life experience.
B．People will lose mental skills together with wisdom.
C．Wisdom is superior in importance to mental aging.
D．Wisdom is inferior in importance to mental aging.

单项选择题

From this passage we may safely infer that many ways might help prevent mental declines except ______.

A．doing jigsaw puzzles
B．playing bridge
C．working crossword puzzles
D．watching TV

单项选择题

What does "sagging"(para.5) probably mean

A．Decline.
B．Become more active.
C．Develop.
D．Become stronger.

单项选择题

Which kind of people will keep intellectual vigor

A．A person in a stable marriage with a stimulating spouse.
B．A lucky person.
C．A person who likes asking.
D．A relatively poor person.