单项选择题

The abuse of water resources has seriously __________ the existence of human beings.

A．jeopardized
B．intimidated
C．assaulted
D．ventilated
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单项选择题
The English language contains a __________of loan words which make it easy for nonnative speakers to some extent.
A．multitude
B．longitude
C．magnitude
D．latitude
单项选择题
Disagreeable weather and years of war __________ the people's poverty and backwardness.
A．accumulated
B．manipulated
C．segregated
D．aggravated
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