单项选择题

For the past few years Susan had been _______ her income by the creation of fiction under a pen name.

A．extending
B．magnifying
C．exceeding
D．supplementing
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单项选择题
The remarkable _______ of life on the Galapagos Island inspired Charles Darwin to establish his theory of evolution.
A．classification
B．density
C．diversity
D．purification
单项选择题
He went ahead with unpopular changes, _______ to hostile criticism.
A．opposed
B．indifferent
C．sensible
D．contrary
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