D. Popular, famous and creative.

　　参考答案1—4、CDBA

　　阅读理解。

　　Why laughter matters

　　Although most people believe that laughter is one of the nature's great treatments for a whole range of mental and physical diseases, it is still a serious scientific subject that researchers are trying to figure out.

　　“Laughter above all else is a social thing，” says Baltimore neuroscientist, Robert Provine, who has studied laughter for decades. “All laughter groups laugh ‘hahaha’ basically the same way. Whether you speak Mandarin, French or English, everyone will understand laughter. There is a pattern generator(发生器) in our brain that produces this sound.”

　　Laughing is our first way of communicating. Babies laugh long before they speak. No one teaches them how to laugh. They just do. People may laugh at a prank(恶作剧) on April Fools' Day. But surprisingly, only 10 to 15 percent of laughter is the result of someone making a joke. Laughter is mostly about social responses rather than to a joke. Deaf people laugh without hearing and people on cell phones laugh without seeing, showing that laughter isn't dependent on single sense but on social interactions.

　　And laughter is not just a thing of people. Chimps tickle(挠痒) each other and even laugh when another chimp pretends to tickle them.

　　Jaak Panksepp, a Bowling Green University Psychology professor, studies rats that laugh when he tickles them. It turns out rats love to be tickled—they return again and again to the hands of researchers tickling them.

【四川省成都市2016届高考英语阅读理解二轮提升训练（21）（含解析）】相关文章：

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（13）附答案

★ 四川省成都市2016届高考英语阅读理解二轮提升训练（16）（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：28（含解析）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（13）模块5 《Unit 13 People》（含解析） 北师大版必修1

★ 四点2015-2016高考英语第二轮复习建议

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 10 A卷 Word版含解析

★ 四川省广安市2014高考英语一轮基础训练题（6）及答案

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习书面表达专题训练：Ⅱ卷强化增分练 训练2（含解析）

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（8）及答案

★ （全国通用）2014届高考英语一轮单元复习 限时强化训练六