单项选择题


A．means
B．source
C．solution
D．resource
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单项选择题
A．discoveredB．disclosedC．inventedD．revealed
A．discovered
B．disclosed
C．invented
D．revealed
单项选择题
The best proof against man's intelligence is that ______.
A．he is greedy and he has a violent hunger for wealth
B．he is cruel and is not above robbing his fellowmen of their possessions
C．he assumes that he is superior to other animals in spite of his past record
D．he is an unreasoning creature
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