单项选择题

A man has to make______ for his old age by putting aside enough to live on when old.

A．supply
B．assurance
C．provision
D．adjustment
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单项选择题
With a wave of his hand, the magician made the duck ______
A．scatter
B．vanish
C．abandon
D．fly away
单项选择题
Many pure metals have little use because they are too soft, rust too easily, or have some other ______.
A．bruises
B．blunders
C．handicaps
D．drawbacks
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