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【单选题】
The ball was probably invented because______.A.
throwing stones often caused injuries
B.
throwing stones was not fun
C.
games with stones did not have roles
D.
rocks were too heavy to throw
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改革开放以来在前进中遇到的一些困惑和问题
B.
我国社会主义在改革开放前所经历的曲折和失误
C.
社会主义初级阶段的主要矛盾
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新世纪新阶段出现的新问题
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academic and professional.
B.
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D.
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【多选题】归根到底就是对“什么是社会主义,怎样建设社会主义”这个基本理论问题没有完全搞清楚。
A.
我国社会主义在改革开放前所经历的曲折和失误
B.
改革开放以来在前进中遇到的一些困惑和问题
C.
新世纪新阶段出现的新问题
D.
社会主义初级阶段的主要矛盾
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