单项选择题

The motive for scientific work is sometimes curiosity, sometimes ______, and sometimes the love for money.

A．allowance
B．agitation
C．amusement
D．ambition

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单项选择题

Though the young lady was very pretty and gracious, she was none ______ happier for her beauty.

A．the
B．much
C．more
D．enough

单项选择题

The question of going to Sun Moon Lake ______ his mind.

A．preoccupied
B．predominated
C．preceded
D．prepossessed

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