填空题

It _________________(是很容易证明的) that nothing is more precious than time.

【参考答案】

can be easily be proved

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单项选择题

70（）

A. right
B. property
C. outcome
D. possession

单项选择题

Compared with other age groups, why should older investors be more cautious about their investment（）

A. They often turn a deaf ear to others’ advice.
B. They tend to be more gambling in nature.
C. They are not so quick-witted as the young.
D. They do not have as many sources of income.