单项选择题


A．sources
B．resources
C．credits
D．origins
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单项选择题
A．consciousB．sensibleC．unknownD．unaware
A．conscious
B．sensible
C．unknown
D．unaware
单项选择题
Houses in Ica experienced terrible destruction during the El Nino event because ______.
A．the El Nino event was the strongest
B．the houses couldn't stand the flood
C．it seldom rained there
D．El Nino was unexpected
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