单项选择题

The timber rattlesnake is now on the endangered species list, and is extinct in two eastern states in which it once______.

A．thrived
B．swelled
C．prospered
D．flourished
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单项选择题
It is naive to expect that any society can resolve all the social problems it is faced with ______.
A．for long
B．in and out
C．once for all
D．by nature
单项选择题
I didn't ______ to take a taxi but I had to as I was late.
A．assume
B．suppose
C．mean
D．hope
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