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问题 选择题

.The workers risked their lives to restore communications in the disaster-stricken areas , which were cut off______the powerful earthquake .
A．in case of
B．in spite of
C．instead of
D．because of
答案

答案：D

问答题 简答题

早熟品种和晚熟品种在形态上有什么主要区别？
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判断题

现代公共行政的原则主要有法治原则、服务原则、效率原则。
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