答案：1. whose
解析：先行词是“a house”，与“windows”之间是所属关系，即“房子的窗户”，所以用关系代词“whose”引导定语从句。
2. which/that
解析：先行词是“a book”，指物，在定语从句中作主语，所以可以用关系代词“which”或“that”。
3. which/that
解析：同第2题，先行词是“a book”，指物，在定语从句中作主语，用“which”或“that”。
4. where
解析：先行词是“a long race”，在定语从句中作地点状语，相当于“in the race”，所以用关系副词“where”。
5. whom
解析：先行词是“the teacher”，指人，在定语从句中作介词“from”的宾语，所以用关系代词“whom”。

答案：1. D
解析：根据第三段“Psychologists Dacher Keltner and Jonathan Haidt define awe as the feeling we get when we're faced with something vast that is beyond our cognition (认知) and that we struggle to understand.”可知，敬畏感是面对超出认知且难以理解的宏大事物时的感觉。埃及金字塔是宏大且可能超出个人认知的事物，符合敬畏感的定义，D选项正确；A选项“看有趣的视频”、B选项“欣赏悦耳的音乐”、C选项“观察野外的小花”都不属于宏大且超出认知的事物，不符合。
2. B
解析：根据第五段“One study found that people drew themselves smaller after an awesome experience. Another study found that people who watched an awe-inspiring video estimated their bodies to be physically smaller than those who watched a funny or neutral video.”可知，敬畏体验会让人觉得自己渺小，即感到不重要，B选项正确；A选项“阻碍创新”与第二段“Seeing expansive videos of Earth has been found to boost people's curiosity and creativity.”相悖；C选项“增强自我意识”与第六段“When people feel awe, the brain lowers activity in the areas thought to make up our sense of self.”相悖；D选项“促使追求高社会地位”文中未提及。
3. B
解析：根据第六段“Using fMRI scans, scientists have discovered changes inside the brain that might be responsible. When people feel awe, the brain lowers activity in the areas thought to make up our sense of self.”可知，当感到敬畏时，大脑中构成自我意识的区域活动降低，即部分大脑活动变慢，B选项正确；A选项“意识提高”、C选项“大脑组织被改变”、D选项“理解能力增强”文中均未提及。
4. B
解析：最后一段提到“Research has shown that feeling awe can make people behave more morally and generously. Awe can have personal benefits as well. It's been shown to make us feel happier and less stressed...”，说明敬畏感对人有益，B选项正确；A选项“低水平的敬畏是最佳选择”文中未提及；C选项“改变自我概念不可接受”与“Changing your sense of self might sound scary, but it can make you a better person.”相悖；D选项“过程比结果更重要”文中未提及。