单项选择题

You don't have to install this radio in your new car. It's an ______ extr

A． excessiveB. optionalC. additionalD. arbitrary
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单项选择题
The mayor is a woman with great ______ and therefore deserves our political and financial support.
A．intention
B．instinct
C．integrity
D．intensity
单项选择题
The fact that the golden eagle usually builds its nest on some high cliffs ______ it almost impossible to obtain the eggs or the young birds.
A．renders
B．reckons
C．regards
D．relates
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