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不适合在多媒体教室中开展的教学活动是()A、教师讲解,学生接受B、教师演示,学生观察C、教师广播,学生操作D、教师置境,学生体验...
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一个正三棱锥和一个正四棱锥,它们的棱长相等。它们重叠一个侧面后还有()个暴露面。A、3个B、4个C、5个D、6个...
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教师要在学生成绩单中统计数学不及格的人数,使用Excel的哪种操作可以完成此功能()。A、自动筛选B、高级筛选C、求和操作D、按数学成绩排序...
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