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问题
填空题
抗日民族统一战线中的进步势力主要是指城市小资产阶级、（）、工人阶级
答案
参考答案：农民阶级
选择题
_____ of the land in that district _____ covered with trees and grass.
A. Two fifth, is
B. Two fifth, are
C. Two fifths, is
D. Two fifths, are
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问答题 简答题
农药按防治对象分为哪些类型？
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