论述题 试述卡德纳斯改革的背景、内容、性质及意义。
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论述题 试分析比较俄国十月革命、德国十一月革命和匈牙利1919年革命的异同点。
22（）
A. they
B. which
C. there
D. that
The air in the house does not remain fresh very long. It’s because （）
A. the fresh air can’t come into the house
B. there is only a little fresh air coming in and a little waste going out
C. the air in the house can’t remain fresh
D. the house gives off wastes
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