Unit 2 Part 1 Starting out & Understanding ideas(同步精炼)（PPT同步课件）-【学而思】2026-2027学年高二英语选择性必修第二册（外研版）

Unit 2　Improving yourself 第1讲　描述运动的基本概念 Part 1　Starting out & Understanding ideas 基础过关练 第1讲　描述运动的基本概念 Ⅰ.单句语法填空 1.[2024北京]I worked extensively with other students, _______________(constant) asked questions, and helped with ongoing projects to learn everything I could. 解析　考查副词。句意:我广泛地与其他学生协作,频繁提问,还在推进中的项目中帮忙,力求尽可能地 汲取一切知识。设空处修饰asked,应用副词作状语。故填constantly。 　constantly     第1讲　描述运动的基本概念 2.[2023浙江1月]With gas prices rising and airport _____________(secure) lines snaking longer than ever, why not book your next domestic vacation on a train? 解析　考查名词。句意:随着汽油价格不断上涨,机场安检队伍也排得比以往都蜿蜒漫长,你下次国内 度假何不预订火车呢?常用表达airport security lines意为“机场安检队伍”。故填security。 　security     第1讲　描述运动的基本概念 3.[易错题][2025天津]Sometimes, it seems as though it's the rainy season in my mind, flooded with con- fused and ________________(distract) thoughts that lead nowhere. 解析　考查形容词。句意:有时,我的思绪仿佛陷入了雨季,满是纷乱无措、扰人心神的念头,终究毫无 头绪。由并列连词and可知,设空处与confused并列修饰thoughts,故用形容词,结合句意可知,应用dis- tracting“使人分心的”。故填distracting。 易错归因　　该题易因只关注到confused的形式而忽略其意义,或辨析不清distracted和distracting的词 义而误填distracted。confused修饰人时,表示“困惑的,迷惑的”;修饰事物时,表示“混乱的,杂乱无章 的”,因此不能仅凭confused的形式就判断and 后也用-ed形式的形容词。distracted 表示“注意力分散 的,思想不集中的”,用来描述人或拟人动物等的状态;distracting 表示“使人分心的”,用来描述引起人 分心的人或物。 　distracting     第1讲　描述运动的基本概念 4.Nowadays,people can switch _______ or ________ household appliances instantly through home smart sys- tems. 解析　考查副词。句意:现在,人们可以通过智能家居系统,即时打开或关闭家用电器。由句意及语境 可知,此处使用的是固定搭配switch on和switch off,分别表示“打开”和“关上”,故填on和off。 　off     　on     第1讲　描述运动的基本概念 5.[2026北京延庆区期中]The thing about being a teacher is that you have access _______ children's minds when they are open and eager to learn. 解析　考查介词。句意:当老师的特别之处是当孩子们敞开心扉、求知若渴的时候,你能有机会触及他 们的心灵。have access to...表示“有机会接触……”。故填to。 　to     第1讲　描述运动的基本概念 6.[2026广西南宁市第三中学段考]But building bridges comes at a cost to the group: the ants __________ (occupy) with supporting the bridge aren't available to hunt. 解析　考查过去分词。句意:但搭建桥梁会让蚁群付出代价,即那些忙于支撑桥梁的蚂蚁无法去觅食。 分析句子结构可知,冒号后的句子已有谓语,故推测设空处应用非谓语动词作后置定语修饰ants,且the ants与occupy之间构成逻辑上的被动关系,要用过去分词构成(be) occupied with,表示“忙于……”。故 填occupied。 　occupied     第1讲　描述运动的基本概念 7.[高考情境题]He is a __________(rely) companion and you can rely on _____ that he will extend a help- ing hand whenever you encounter difficulties or are trapped in trouble. 解析　考查形容词和代词。句意:他是一位可靠的伴侣,你可以相信,无论何时你遭遇困境或深陷麻烦, 他都会伸出援手。第一空修饰名词companion,应用形容词reliable作定语,表示“可靠的,可信赖的”,故 第一空填reliable。rely on it that...为固定用法,表示“相信/指望……”,it作形式宾语,that引导的从句为 真正的宾语,故第二空填it。 　it     　reliable     第1讲　描述运动的基本概念 8.[2021北京]Your application _____________________(access) by UNESCO managers and will stay in our database for six months. 解析　考查时态和语态。句意:你的申请将由联合国教科文组织管理人员访问,并将在我们的数据库中 保存6个月。由空后的and will stay可知要用一般将来时。结合语境可知,主语Your application与access 之间为被动关系,需用被动语态。故填will be accessed。 学科思维　　并列连词and、but、or等前后的词的词性、句子成分等一般是一致的。 　will be accessed     第1讲　描述运动的基本概念 9.Personally, a certain amount of stress is vital to providing _______________ and giving purposes to life and the majority of people __________________ by achieving success.(motivate) 解析　考查名词及时态、语态和主谓一致。句意:以我之见,一定量的压力对提供动力和赋予生活意义 极其重要,而且大部分人会通过取得成功获得激励。分析句子结构可知,第一空要用名词作宾语,表示 “动力”,故第一空填motivation。在第二个and后的分句中,the majority of people是主语,第二空作谓语, 结合语境和前边的is可知应用一般现在时;the majority of people与motivate之间为被动关系,应用被动语 态;the majority of people作主语时,谓语动词用复数,故第二空填are motivated。 　are motivated     　motivation     第1讲　描述运动的基本概念 10.[2026四川省射洪中学校月考]With the complicated road signs ______________ (confuse) the new driver, he had to pull over and check the map again. 解析    考查动词的-ing形式。句意:由于复杂的路标让这位新司机感到困惑,他不得不靠边停车,再次查 看地图。分析句子结构可知,此处是with的复合结构作状语,设空处应用非谓语动词作宾补,且宾语the complicated road signs与所给提示词confuse之间为逻辑上的主动关系(复杂的路标使这位新司机感到 困惑),应用动词的-ing形式。故填confusing。 　confusing     第1讲　描述运动的基本概念 Ⅱ.选词填空(其中有一项多余) miss out on;throw in the towel;pick up;step away from;check out;on reflection 　　Even though it's a big challenge to 1._________________ social media and keep a healthy lifestyle, the young man made up his mind to make a change instead of 2._______________________ easily. 3._______ __________, he realized the key was to make his spare time filled with meaningful activities. To make it, he went to 4.____________ the nearest sports center and didn't 5._____________ any chances to take exercise. He made steady improvement and his commitment paid off finally. 　miss out on     　check out     flection     　On re- 　throwing in the towel     　step away from     第1讲　描述运动的基本概念 Ⅲ.完成句子 1.[2025全国一]由于我的注意力聚集在举办这场“完美”派对上,我没能对最需要关爱的弟弟表达同 情。(with的复合结构;fix...on) ________ ______ __________ _______ ________ hosting the “perfect” party, I had failed to show em- pathy for my brother who needed it most.(读后续写—个人反思) 2.[2025天津3月写作]该是我们走进博物馆并探寻它们所呈现的奇妙世界的时刻了。 ______ _______ _______ _____ _____ _________ into the museums and explore the wonderful world they offer. 3.[2021新高考Ⅰ]这对双胞胎很快忙着打扫厨房,而他们的父亲忙着做早餐。(occupy;occupied) The twins soon ___________ ___________ ____________ cleaning the kitchen, while their father was ___________ _______________ the breakfast.(读后续写—情节描写)     occupied 　　in/with     　occupied 　　themselves 　　in/with     　It's 　　time 　　for 　　us 　　to 　　step     　With 　　my 　　attention 　　fixed 　　on     第1讲　描述运动的基本概念 能力提升练 第1讲　描述运动的基本概念 Ⅰ.课文语法填空 　　Today marks the final day of the Social Media Detox, which is 　1　 fundraising campaign for new sports equipment. Initially, more than 100 students had been persuaded to stop 　2　(use) social media for seven days. They had been promised money by family and friends for each day 　3　(spend) without using social media. Now, with the detox concluded, they've switched on their 　4　(device). The campaign raised ￡1,632.82 in total and participants had different experiences and feelings. Some students, who found the detox was difficult to tolerate, 　5　(throw) in the towel halfway, or even on the first day. But on reflection, they realized they should spend less time online. By contrast, some successfully persisted throughout the en- tire week. Faced with the challenge, they found new ways to resist temptation and maintain communication with one another. And now they believe that even if social media aren't 　6　(access), they can still enjoy a colourful life. 第1讲　描述运动的基本概念 　　In my opinion, 　7　 has been raised through the detox is not merely financial support, but also the 　8 　(aware) of how much we rely 　9　 social media. Now it's time for us 　10　(step) away from it and live a more meaningful life. 1.______    2._________    3.________    4.__________    5._________ 6.____________    7._________    8.___________    9.____________    10.____________ 　to step     　on/upon     　awareness     　what     　accessible     　threw     　devices     　spent     　using     　a     第1讲　描述运动的基本概念 解析 1.考查冠词。此处表示“社交媒体脱瘾是一项为新运动器材筹款的活动”,campaign为可数名词,意为 “活动,运动”,此处表示泛指,且fundraising的发音以辅音音素开头,故填a。 2.考查动词的-ing形式。此处表示“一百多名学生被说服停止使用社交媒体七天”,应用stop doing sth.,意为“停止做某事”。故填using。 易错归因　　该题易错填to use,主要是由于忽略具体语境或对stop doing和stop to do两者的区别掌握 不准确。stop doing sth.表示“停止做某事”, stop to do sth.表示“停下来去做另一件事”。 第1讲　描述运动的基本概念 3.考查过去分词。句中已有谓语had been promised,空处应用非谓语动词作后置定语,修饰each day,且 each day与spend为逻辑上的被动关系,应用过去分词作定语。故填spent。 4.考查名词复数。device为可数名词,结合语境及空前的their可知此处应用名词复数作switched on的宾 语。 5.考查时态。该句中who引导定语从句,设空处为主句的谓语,该活动发生在过去,指过去的事应用一般 过去时,故填threw。 6.考查形容词。分析句子结构可知,设空处作系动词aren't的表语;结合语境可知此处表示“即使不能使 用社交媒体,他们仍然可以享受丰富多彩的生活”,由此可知设空处表示“可使用的”,应用形容词作 表语,故填accessible。 第1讲　描述运动的基本概念 7.考查名词性从句。分析句子结构可知,系动词is前面为主语, “ 　7　 has been raised through the detox”为设空处引导的主语从句,且设空处在该从句中作主语,表示“……的东西”,故填what。 8.考查名词。由空前的定冠词the和空后的介词of可知,设空处应用名词;结合语境可知此处指通过脱瘾 活动“我们”意识到后边所说的内容,设空处表示“意识”,应用名词awareness。 9.考查介词。rely on/upon sth.依赖/依靠某物。 10.考查动词不定式。it's time for sb. to do sth.意为“是某人做某事的时候了”。 第1讲　描述运动的基本概念 Ⅱ.语法填空   [2025吉林名校联盟联考] 　　As food is to the body, so is learning to the mind. Our bodies grow and muscles develop with 　1　 in- take of enough nutritious food. Likewise, we should keep learning day by day 　2　(maintain) our keen mental power and expand our intelligence. Constant learning 　3　(supply) us with inexhaustible fuel for driving us to sharpen our power of reasoning, analysis, and judgment. Learning uninterruptedly is the surest way to keep pace with the times in the infor- mation age, and a 　4　( rely) foundation of success in times of uncertainty. Once learning stops, dull life sets in. 第1讲　描述运动的基本概念 　　　5　 is a common false 　6　(believe) to regard schools as the only workshop for the acquisition of knowledge. Instead, learning should be a never-ending process. 　7　 the world ever changing so fast, the cessation of learning for just a few days will make a person fall behind. What's worse, the laziness 　8　 lies deep in our subconsciousness will come to life, 　9　(weaken) our will to pursue our noble ideal, reduc- ing our determination to overcome challenges on our way to success and killing our desire for the good character. 　　Lack of learning will undoubtedly lead to the stagnation(停滞) of the mind. Therefore, to stay 　10　 (mental) young, we have to take learning as a lifelong career. 1.________    2._____________    3._________    4.__________    5._______ 6._________    7._________    8.___________    9.______________    10.___________ 　mentally     　weakening     　which/that     　With     　belief     　It     　reliable     　supplies     　to maintain     　the     第1讲　描述运动的基本概念 语篇解读    本文是一篇说明文。文章主要介绍了学习的重要性,指出学习应该是一个永无止境的过 程。 【高频词汇】    1.intake n.摄取量;吸收    2.analysis n.分析    3.keep pace with跟上,与……步调一致 4.foundation n.基础    5.acquisition n.习得;得到;收购 【熟词生义】　drive熟义:v.驾驶　生义:v.驱使,促进 【差距词汇】    1.inexhaustible adj.取之不尽的 2.reasoning n.推理;理性的观点    3.uninterruptedly adv.不间断地    4.never-ending adj.永无止境的     5.cessation n.停止;终止;中断;暂停    6.subconsciousness n.潜意识 第1讲　描述运动的基本概念 长难句 第1讲　描述运动的基本概念 1.考查冠词。句意:我们的身体和肌肉随着足够的营养食物的摄入生长和发展。根据后置定语“of e- nough nutritious food”可知,intake在此处表示特指,要用定冠词修饰。故填the。 2.考查动词不定式。句意:同样,我们应该日复一日地坚持学习,以保持我们敏锐的精神力量,拓展我们 的智慧。由句意可知,此处表示目的,应用动词不定式作目的状语。故填to maintain。 3.考查时态和主谓一致。句意:不断学习为我们提供取之不尽的燃料,驱使我们磨砺推理、分析和判断 的能力。设空处作谓语,此处客观陈述了学习的好处,应用一般现在时;主语Constant learning表示单数 意义,谓语要用第三人称单数形式。故填supplies。 4.考查形容词。设空处修饰空后的名词foundation,应用形容词作定语,表示“可靠的,可信赖的”,故填 reliable。 5.考查代词。句意:把学校看作获取知识的唯一场所是一种普遍的错误观念。分析句式可知,不定式短 第1讲　描述运动的基本概念 语“to regard...knowledge”是真正的主语,因此句首的设空处要用It作形式主语。故填It。 6.考查名词。由空前的“a common false”可知,设空处应用单数名词作表语。故填belief。 7.考查介词。句意:世界瞬息万变,短短几天的学习停顿就会使一个人落后。分析句子结构并结合句意 可知,“ 　7　 the world ever changing so fast”是“with+宾语(名词)+宾补(动词的-ing形式)”结构,在 句中作状语,句首单词首字母应大写。故填With。 8.考查定语从句。分析句子结构可知,“ 　8　 lies deep in our subconsciousness”为设空处引导的定语 从句,修饰指物的先行词the laziness,设空处在从句中作主语,故填关系代词which或that。 9.考查动词的-ing形式。分析句子结构可知,“the laziness will come to life”是句子的主干,设空处应用 非谓语动词作状语;设空处与“reducing”和“killing”并列,表示自然而然的结果,应用动词的-ing形式 作状语。故填weakening。 10.考查副词。空处修饰形容词young,应用副词形式,故填mentally。 第1讲　描述运动的基本概念 A   [2026辽宁省实验中学期中] 价值引领  　　On a Saturday morning, I took my son to the Museum of Modern Art, eager to introduce him to the endless world of artistic expression. Yet, as we stood before a breathtaking painting, my son suddenly asked, “Dad, how much do you think this is worth?” The question caught me off guard. Instead of losing our- selves in the colors and shapes, we were pulled into a discussion of numbers. 　　It was then that I became aware of how deeply we've fallen into the trap of quantification(量化). We measure everything: steps, calories, likes. Consider how we approach dining. Do we truly enjoy the flavors and the atmosphere? Or do we immediately take a photo for Instagram, checking how many likes it obtains, Ⅲ.阅读理解 第1讲　描述运动的基本概念 as if popularity could justify the experience? The simple pleasure of a meal has been reduced to restaurant ratings and social media engagement. One evening, as I put on my running shoes, I hesitated. My smartwatch would track my pace, my heart rate, and the distance. But what if I ran just to feel the wind against my skin? What if I moved for the pleasure of movement? So I left the device behind. For the first time in years, I ran unburdened by numbers. There was just my breath and the pounding of my feet on the pavement. It was liberating in a way I hadn't anticipated. 　　That experience has made me realize that quantification offers the comforting illusion(幻觉) that we can manage it when we're afraid to face the unpredictable nature of life. Numbers can provide a false sense of security in a chaotic existence. We assume that if we can track life, we can master it. But happiness, love and wonder can't be quantified. In our obsession(痴迷) with measurement, we risk reducing our lives to data points, forgetting what makes them rich. 第1讲　描述运动的基本概念 　　Now, I resist reaching for the ruler. Life is not about keeping scores but about being present whole- heartedly, without the constant need to prove our worth through numbers. The things that matter most can only be lived. 1.Why did the author mention dining experiences in paragraph 2? A.To criticize modern people's dining habits. B.To argue against the use of restaurant ratings. C.To show how quantification affects daily activities. D.To explain how technology enhances dining experiences. 第1讲　描述运动的基本概念 2.What did the author discover after running without his smartwatch? A.He needed better running shoes. B.He felt an unexpected sense of freedom. C.He achieved better running performance. D.He missed the motivation provided by numbers. 3.What makes people obsessed with quantification according to the author? A.The resistance to changes. B.The pursuit of true happiness. C.The pressure of social recognition. D.The desire for control over uncertainties. 4.What is the best title for the text? A.Stop measuring life and start living B.Technology reshapes our lives C.Capture life‘s beauty with cameras D.Precise measurement is vital for happiness 第1讲　描述运动的基本概念 语篇解读　本文是一篇记叙文。文章讲述了作者因儿子的提问意识到人们深陷量化陷阱,以用餐、跑 步为例说明其对生活的影响,呼吁放下量化,全身心投入当下,感受生活本质。 【高频词汇】    1.breathtaking adj.激动人心的;令人赞叹的    2.measure v.测量　measurement n.测量     3.track v.追踪,跟踪 n.轨道,踪迹    4.anticipate v.预料,预期 5.resist v.抗拒,抵制　resistance n.抗拒,抵制 【熟词生义】    1.like熟义:v.喜欢,喜爱　生义:n.(对社交网络、新闻网站、博客等内容的)赞,点赞     2.reduce熟义:v.减少　生义:v.使变成    3.nature熟义:n.大自然 生义:n.本质    4.existence熟义:n.存在　生义:n.生活(方式) 第1讲　描述运动的基本概念 长难句 第1讲　描述运动的基本概念 1.C　推理判断题。根据第二段中的“It was then that I became aware of how deeply we've fallen into the trap of quantification.(就在那时,我意识到我们已经深深陷入了量化的陷阱。)”以及后文以用餐为例, 描述人们关注餐厅评分和社交媒体互动而非美食本身可推测,提及用餐经历是为了表明量化如何影响 日常活动。故选C。 易错归因　　该题易因未关注到主题而错选A或B。A项“To criticize modern people's dining habits.(批 评当代人的用餐习惯。)”偏离主旨,作者并非针对“习惯”本身,而是指习惯背后的量化思维。B项 “To argue against the use of restaurant ratings.(反对餐厅评分的使用)”属于过度解读,作者并没有否定 餐厅评分本身,而是批判过度量化的行为,作者提到用餐体验的目的是表明量化对日常活动的影响。 第1讲　描述运动的基本概念 2.B　细节理解题。根据第三段最后四句“So I left the device behind...I hadn't anticipated.”可知,作者 不戴智能手表跑步后,感受到了意想不到的自由。其中“liberating”对应选项B中的“sense of free- dom”,“hadn't anticipated”对应选项B中的“unexpected”。故选B。 学科思维　　该类试题的正确选项不出现原文中的直接信息,往往借助语义转换(如同义词/近义词/反 义词/同源词)、词性转换、句式转换(如变语态,正话反说)、语言简化概括等方法对原文信息进行转 述,有时选项与原文语句的表达有较大差异,需要进行整理或分析对比后得出答案。 第1讲　描述运动的基本概念 3.D　细节理解题。根据第四段第一句“That experience...the unpredictable nature of life.”可知,人们痴 迷量化是因为渴望控制不确定性。故选D。 4.A　主旨大意题。通读全文可知,文章开篇以儿子的提问引出“量化陷阱”,随后通过用餐、跑步的 例子说明量化对生活的影响,最后总结“Life is not about keeping scores but about being present whole- heartedly...”,核心是呼吁人们停止量化生活,专注生活本身。由此可知,A项“Stop measuring life and start living(停止量化生活并开始生活)”适合作为本文最佳标题。故选A。 第1讲　描述运动的基本概念 B   [2026广东上进联考] 　　Surfing the Internet, you'll see a display of wonderful lives: vacation sunsets, perfectly staged meals, and broad smiles across bright faces. These posts, carefully prepared to show off success, happiness, or so- called “reality”, are more than just updates—they're just performances. What few acknowledge is the qui- et change: growing dissociation(分离) between the self we present online and the self we live with offline. This identity _____________, psychologists warn, is changing how we see ourselves and connect with others, making the line between performances and reality unclear until we struggle to recognize which version is “real”. 　　The pressure to perform increases with age. Teenagers raised on various social media often present di- fragmentation 第1讲　描述运动的基本概念 verse personae(人格面具):the “hard-working kid” for parents, the “naughty teen” for peers, the “deep thinker” for strangers. Mia, 16, from London, describes them as “masks”. “I have three chatting ac- counts—one for family, one for school, and one for whatever I want,” she says. Research links this con- stant change to a 37% rise in teenagers' anxiety, as young people find it hard to lock themselves in a single, stable identity. 　　Worse, the performance often outlasts the platform. When we invest years in creating a “happy” per- sona, we start to judge our real lives against it. Sarah, a mother in Toronto, deleted her social media account after her posts about “happy motherhood” left her feeling guilty about her actual tiredness. “I'd surf past my own photos and think, ‘why can't I feel that way?’” she says. Psychologists call this digital dissocia- tion: the brain begins to treat the online persona as the “perfect self”, while considering real emotions as failures to measure up. 第1讲　描述运动的基本概念 　　The lesson isn't to quit social media, but to regard it as a mirror, not a stage. We live in a world where we are always “on”, but the most human thing we can do is admit when we're “off”. The dissociation between digital and real selves isn't unavoidable—it's a choice. And choosing to remove it, one real-life post or honest conversation at a time, might be the truest act of self-protection. 5.What does the underlined word “fragmentation” in paragraph 1 mean? A.Uniqueness.　　B.Separation.　　C.Substance.　　D.Recognition. 6.What can we know about Mia? A.She fails to own a fixed role. B.She tries to be a top student. C.She is popular with young kids. D.She is adaptable to campus life. 第1讲　描述运动的基本概念 7.What made Sarah remove her social media account? A.The negative comments on her posts. B.The unwillingness of sharing her life. C.Her real life unlike the one shown online. D.Her shortage of free time to send posts. 8.What can be the best title for the text? A.Express, Invent, Suffer B.Exhibit, Hide, Escape C.Publish, Cheat, Sadden D.Perform, Pretend, Regret 第1讲　描述运动的基本概念 语篇解读　本文是一篇说明文。文章探讨了数字时代人们在网络上塑造的自我与真实自我之间的割 裂问题。 【高频词汇】    1.acknowledge v.承认;认可;感谢 2.identity n.身份    3.delete v.删除    4.substance n.物质 5.recognition n.认可;认出,识别    6.comment n.评论 7.pretend v.假装 【熟词生义】    1.present熟义:n.礼物　生义:v.展现 2.lock熟义:v.锁住　生义:v.固定    3.stage熟义:n.舞台,阶段　生义:v.组织,筹划 【差距词汇】　outlast v.比……持续时间长 第1讲　描述运动的基本概念 长难句 第1讲　描述运动的基本概念 5.B　词义猜测题。“What few acknowledge...we live with offline.”表明我们在网络上呈现的自我与 线下真实生活中的自我之间的分离正日益加剧,画线词“fragmentation”所在句承接前文进一步说明 “这种身份______正在改变我们看待自身、与他人建立联系的方式”,由此可推断,“This identity fragmentation”指这种身份的“分离”,fragmentation与B项(分离)同义。故选B。 6.A　推理判断题。根据第二段可知,米娅把它们描述为“面具”,她有三个聊天账号。再结合“这种 频繁的变化与青少年焦虑率上升37%有关,因为年轻人发现很难将自己固定在单一、稳定的身份 上。”可推测,米娅拥有对应不同身份的多个账号,难以拥有固定角色。故选A。 7.C　细节理解题。根据第三段第三、四句可知,萨拉删除了自己的社交媒体账号,因为她发布的“幸 福母爱”相关帖子让她对自己实际的疲惫感到内疚,即萨拉删除社交媒体账号是因为真实生活与线上 展示的“幸福”不符。故选C。 第1讲　描述运动的基本概念 8.D　主旨大意题。通读全文,本文的结构和各段大意如下: Para. 1 网络上展示光鲜生活,实际上是在“表演”,导致线上线下自我分裂。 Para. 2— Para. 3 列举青少年米娅“戴面具”、一位母亲萨拉因线上形象与自身真实情况不符而感到内疚并删除社交媒体账号的例子,说明“表演”与“伪装”的危害。 Para. 4 呼吁理性看待社交媒体,应正视真实的自我。 由此可知,核心脉络是“表演(perform)—假装(pretend)—懊悔(regret)”。故选D。 第1讲　描述运动的基本概念 $