3．D　解析：细节理解题。根据第四段第三句“And smiling has been shown to lower blood pressure, relieve stress and improve happiness.”可知，微笑的作用包括A、B、C三项内容，不包括“提高智力”。故选D项。

　　4．A　解析：写作意图题。根据最后一段倒数第二句“So maybe we can make the world a better place by saying hello to each other.”并结合上文作者提到的打招呼的诸多好处可知，作者的写作目的就是建议大家见面要经常打招呼。故选A项。

　　Ⅱ.完形填空

　　Some years ago I was offered a writing assignment that would require three months of travel through Europe.I had been __1__ a couple of times，but I could hardly __2__ to know my way around the continent.__3__， my knowledge of foreign languages was __4__ to a little college French.

　　I __5__.How would I unable to speak the language，__6__ familiar with local geography or transportation systems, conduct interviews and do __7__？ It seemed impossible, and with considerable __8__ I sat down to write a letter rejecting the __9__.Halfway through, a __10__ ran through my mind：you can't learn if you don't try.So I__11__ the assignment.

　　There were some bad __12__.But by the time I had finished the trip, I was an experienced traveler.And ever since, I have never hesitated to head for even the most __13__ places, without guides or __14__ advanced bookings，confident that somehow I will __15__.

【2017版高考英语北师大版《名师伴你行》一轮复习课时作业：23《Conflict》（含解析）】相关文章：

★ 2017届高考英语二轮复习课时训练：12（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍完形填空之记叙文：命题趋势（含解析）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（21）模块7 《Unit 21 Human Biology》（含解析） 北师大版必修1

★ 2017高考四川省广安市英语阅读理解一轮系列训练：13（含解析）

★ 2014届高考英语一轮复习课时作业(四十五)选修8Module 3《Foreign Food》（外研版）

★ 2014届高考英语一轮复习课时作业(一)必修1Module 1《My First Day at Senior High》（外研版）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第6组（含解析）

★ 【浙江专用】2014届高考英语一轮复习课时作业(一)必修1Unit 1《Friendship》

★ 四川省2016届高考英语一轮复习课时作业（35） Module 5 Cloning 外研版选修6

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 6 B卷 Word版含解析