题干

如图所示,光在玻璃和空气的界面CD同时发生了反射和折射,以下说法正确的是(   )

A:入射角为60°,界面右侧是空气

B:折射角为45°,界面右侧是玻璃

C:入射角为30°,界面右侧是空气

D:折射角为45°,界面左侧是玻璃

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答案(点此获取答案解析)

C,D

同类题1

阅读理解

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同类题5

阅读下列材料:
材料一:

材料二:窃闻东西各国之强,皆以立宪法开国会之故。国会者,君与民共议一国之政法也。立行宪法,大开国会以庶政与国民共之,则中国之治强计日可待也。
                                                                                                                                      一一康有为《 请定立宪开国会折》
材料三 胡适说,北大是因为三个兔子而成名的,一是老兔子蔡元培;二是中兔子陈独秀,三是小兔子胡适本人(三人年有长幼,但都属兔)。
                                                                                                                                     ——洪向华主编 《复兴之路》
(1)依据材料一的四幅图文材料,依次写出相对应的运动名称。
(2)图1所示的运动“自强求富”的根本目的是什么?
(3)图3人物领导了一次伟大的运动,这次运动(革命)指导思想什么? 这场革命对中国历史发展有何重大意义?
(4)材料二反映了康有为、梁启超等人的政治主张,揭开这一事件的序幕是什么?  这一事件在当时起到什么作用?
(5)根据所学知识推断,材料三中“三个兔子”在北大因高举哪两面大旗而闻名。
(6)请给以上问题的探究学习确定一个主题。