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单项选择题

著名古迹'秦始皇兵马俑'位于我国哪个省份:__

A.湖北
B.湖南
C.河南
D.陕西

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热门试题

单项选择题1.关于两个变量存在统计关系描述错误的是（）

A．统计关系也是函数关系
B．两个变量不存在一一对应关系
C．统计关系可以采用回归分析或相关分析
D．两个变量都存在变异

单项选择题What can we learn about endorphins and Internet addicts from the text

A．Endorphins are the essential brain chemicals that cause Internet addiction.
B．Endorphins can provide useful, real-life awards, which can help prevent Internet addiction.
C．Endorphins can encourage Internet addicts to talk and spend time with their family and friends.
D．Endorphins may be released continuously and for a long time in the brains of Internet addicts.