单项选择题

Though he views himself as a realist, Cetron says that his findings make him very ______ about future.

A．optimistic
B．sympathetic
C．objective
D．precautious
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单项选择题
If not ______ with the respect he feels due to him, Jack gets very ill-tempered and grumbles all the time.
A．being treated
B．treated
C．be treated
D．having been treated
单项选择题
A man has to make ______ for his old age by putting aside enough money to live on when old.
A．supply
B．assurance
C．provision
D．adjustment
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