必修第二册 UNIT 5 HUMANS AND NATURE（word练习）-【导学教程】2025年英语新编高考大一轮总复习（北师大版）

[对应学生用书P499] A级　阅读提升练 Ⅰ.阅读理解 A (2024·常德一中阶段练习)These science­themed field trips will offer you fantastic experiences. London's sites of scientific interest Explore London's notable sites of scientific interest along the River Thames, starting at Kew Bridge and walking to the Thames Barrier during the day with talks in the evening with some professors. Visit the London Wetland Centre, Kew Gardens, Battersea Power Station, and the Greenwich Observatory. You will never be far from the river as you experience a wide range of topics including wildlife, medicine, power generation, engineering, physics and astronomy. The science history of Scotland Discover Edinburgh and Glasgow's most famous scientific thinkers, and learn how their ideas supported our emerging understanding of the world from the 16th century onwards. Enjoy expert talks and explore key sites from the Scottish Enlightenment (启蒙). Learn about the wide cast of advocates and hear from guest speakers, take part in walking seminars (研讨会) and enjoy several museum trips, as well as visits to two industrial wonders, the Falkirk Wheel and the Whitelee Windfarm. Pre­Historic Southwest England Involve yourself in the early human periods the Bronze and Iron Ages. A gentle walking tour that explores the pre­historic origins and evidence across Wiltshire and Dorset. Visit several National Trust, English Heritage and UNESCO listed sites including Stonehenge and Maiden Castle and hear talks from the directors of the Wiltshire and Salisbury museums. [语篇解读]　本文是一篇应用文。文章主要介绍了以科学为主题的旅行。 1．Which site can you visit along the River Thames? A．Maiden Castle. B．The Falkirk Wheel. C．The Wetland Centre. D．The Salisbury museums. 解析　C　细节理解题。根据London's sites of scientific interest中的第二段“Visit the London Wetland Centre, Kew Gardens, Battersea Power Station, and the Greenwich Observatory. (参观伦敦湿地中心、邱园、巴特西发电站和格林威治天文台。)”可知，沿着泰晤士河你可以参观到湿地中心。故选C。 2．What is the visit to the Southwest England aimed at? A．A closer look at the past. B．A brief exposure to nature. C．A new view about mysteries. D．A deeper understanding of art. 解析　A　细节理解题。根据Pre­Historic Southwest England中的第一段“Involve yourself in the early human periods the Bronze and Iron Ages. A gentle walking tour that explores the pre­historic origins and evidence across Wiltshire and Dorset. (让自己置身于人类早期的青铜和铁器时代。一次温和的徒步旅行，探索威尔特郡和多塞特郡的史前起源和证据。)”可知，访问英格兰西南部的目的是仔细看看过去。故选A。 3．What can visitors expect during all the three trips? A．Talks with experts. B．Visits to museums. C．History explorations. D．Scientific research. 解析　A　细节理解题。根据London's sites of scientific interest中的第一段“Explore London's notable sites of scientific interest along the River Thames, starting at Kew Bridge and walking to the Thames Barrier during the day with talks in the evening with some professors. (沿着泰晤士河探索伦敦著名的科学景点，从邱桥开始，白天步行到泰晤士河屏障，晚上听取一些教授演讲。)”、The science history of Scotland中的第二段“Enjoy expert talks and explore key sites from the Scottish Enlightenment (启蒙).(享受专家讲座，探索苏格兰启蒙运动的重要遗址。)”和Pre­Historic Southwest England中的第二段“Visit several National Trust, English Heritage and UNESCO listed sites including Stonehenge and Maiden Castle and hear talks from the directors of the Wiltshire and Salisbury museums. (参观几个由国家信托、英国遗产和联合国教科文组织列出的景点，包括巨石阵和少女城堡，并听取威尔特郡和索尔兹伯里博物馆馆长的演讲。)”可知，在这三次旅行中，游客可以听取专家的演讲。故选A。 B (2024·兰州高中阶段练习)People have different ways of dealing with waste paper, specifically used newspapers. Some put them in the recycling area, while others keep them as wrappers (包装纸). While these are both good measures, a Japanese publishing company had a better idea for their end use. The Mainichi Newspapers Co., Ltd. invented the “Green Newspaper”， which allows people to grow plants with it. This unique newspaper was published on Greenery Day, which is focused on environmental news and made of green paper with seeds placed into it. What makes it even more special is the ink (油墨) used to print words and photos, which is made from plants. The publisher advises readers to tear the used newspaper into small pieces and plant them in a container with soil. They should water them, like they would do for any plant. Within a few weeks, the seeds will grow into plants. This brilliant concept was invented by Dentsu Inc., one of Japan's most famous advertising agencies, which works with the publishing company on the initiative (倡议). The publisher's belief is environmental sustainability (持续性). As its mission statement says, “The Mainichi doesn't take action only through information, but also by solving global issues.” With joint efforts, this initiative has reached the corners of Japan and sold around millions of copies daily. Other such initiatives producing plantable paper are also seen in India and the US. About 95 million trees are lost for producing newspapers every year. The Internet, the number of whose users stands for 62.5 percent of the population worldwide, has influenced how people read news and the print readership has dropped greatly. However, the reinvention and reimagination of this newspaper will bring about a change in the publishing industry as well as having an environmental influence. [语篇解读]　本文是一篇说明文。文章主要介绍了一家日本出版公司对废纸的处理。 4．What do we know about the “Green Newspaper”？ A．It uses high­tech materials. B．It provides energy for seeds. C．It's printed with plant­based ink. D．It's published to celebrate Greenery Day. 解析　C　细节理解题。根据文章第二段“What makes it even more special is the ink (油墨) used to print words and photos, which is made from plants.(更特别的是，用于打印文字和照片的墨水是由植物制成的。)”可知，打印这种“绿色环保的报纸”的墨水是由植物制成的。故选C。 5．What message does the publisher's mission statement convey? A．It's easier said than done. B．Everything comes to him who waits. C．Many hands make light work. D．Actions speak louder than words. 解析　D　推理判断题。根据文章第三段“The publisher's belief is environmental sustainability (持续性). As its mission statement says, ‘The Mainichi doesn't take action only through information, but also by solving global issues.’ With joint efforts, this initiative has reached the corners of Japan and sold around millions of copies daily.(出版商的理念是环境的可持续性。正如其使命宣言所说，‘《每日新闻》不仅通过信息采取行动，还通过解决全球问题采取行动。’在大家的共同努力下，这一创想已经传播到了日本的各个角落，每天的报纸销量达到了数百万份。)”可知，出版商的使命宣言和出版商的行为一致，他们的理念是环境的可持续性，而他们也通过自己的行动践行这一理念。由此推知，选项D“Actions speak louder than words.(事实胜于雄辩)”阐述的正是这家出版商的行为。故选D。 6．What's the author's attitude to the “Green Newspaper”？ A．Doubtful. B．Supportive. C．Indifferent. D．Negative. 解析　B　推理判断题。根据文章最后一段“However, the reinvention and reimagination of this newspaper will bring about a change in the publishing industry as well as having an environmental influence.(然而，这份报纸的重塑和想象重构将带来出版业的变化，并对环境产生影响。)”可推知，作者对于这份报纸抱有支持的态度。故选B。 7．What can we learn from the last paragraph? A．About 59 million trees are lost for producing newspapers. B．The Internet has changed the way people read news totally. C．The popularity of the Internet leads to the fall of the print readership. D．The “Green Newspaper” will encourage more people to protect the environment. 解析　C　细节理解题。根据文章最后一段“About 95 million trees are lost for producing newspapers every year. The Internet, the number of whose users stands for 62.5 percent of the population worldwide, has influenced how people read news and the print readership has dropped greatly.(每年约有9500万棵树因生产报纸而消失。互联网的用户数量占全球人口的62.5%，它影响了人们阅读新闻的方式，纸质报纸的读者数量大幅下降。)”可知，由于互联网的普及，纸质报纸的读者数量大幅下降。故选C。 Ⅱ.七选五 (2023·太原一模)Museums become the next stop many students want to visit at their leisure. __1__ However, the experience of visiting a museum could be quite disappointing if not done right, even for the experienced museumgoers. __2__ No matter how much you're enjoying yourself, many museums can take hours, days, or even weeks to fully explore. If you try to put it all in, you will get worn out to the point that you won't really be seeing anything. Pick a few paintings and explore them in a detailed way, and your museum experience will be more relaxing. Have you ever started your visit by waiting in line in front of the museum for a few hours just to get in? And that's the sad reality when visiting many of those world­famous museums. Thus, be smart to browse the instructions for visiting and book in advance online. __3__ What if you don't like some museums? Then don't visit them! I'm not a massive fan of parks, so I would hardly ever end up in any park while traveling.__4__ Do they have a nice collection of an art style you love? Just ask yourself and visit the museum website to see what the highlights are. There is nothing worse than impolite manners while visiting. We've all witnessed that guy being yelled at by the security for touching or taking flash photos.__5__ Otherwise, not only will you absolutely get embarrassed by security guards, but you can actually ruin artworks! All of these ground rules are often neglected by us. Bear them in mind before setting off, and you will enjoy your museum tour! A．It's the same with the museums. B．But most of them do it all wrong. C．If you haven't, don't let it be you. D．That way you can have an easy access. E. The first step is to research how to enjoy everything. F. Sometimes you may sigh museum tiredness is a real thing. G. Generally, there is no right or wrong way to visit a museum. [语篇解读]　本文是一篇说明文。文章主要针对如何更好地参观博物馆给出一些建议。 1．解析　G　根据上文“Museums become the next stop many students want to visit at their leisure.”及下文“However, the experience of visiting a museum could be quite disappointing if not done right, even for the experienced museumgoers.”可知，上文提及学生喜欢参观博物馆，下文说如果安排不当则会是一次让人失望的经历，故设空处应承上启下，与下文构成转折，G项(通常，参观博物馆的方式没有对错之分)符合语境。 2．解析　F　设空处位于句首，起到引起下文的作用。根据下文“No matter how much you're enjoying yourself, many museums can take hours, days, or even weeks to fully explore.”可知，参观博物馆有时会令人疲惫，F项(有时你可能会感叹逛博物馆的疲惫是真实存在的)符合语境。 3．解析　D　根据上文“Thus, be smart to browse the instructions for visiting and book in advance online.”可知，想要避免排队等候时间过长可以在网上提前预订，D项(这样你就可以轻松进入)介绍的是网上提前预订带来的好处，符合语境。 4．解析　A　根据上文“What if you don't like some museums? Then don't visit them! I'm not a massive fan of parks, so I would hardly ever end up in any park while traveling.”可知，如果不喜欢博物馆那就不要去参观，就像作者不喜欢公园一样，A项(对博物馆来说也是如此)符合语境。 5．解析　C　根据上文“There is nothing worse than impolite manners while visiting. We've all witnessed that guy being yelled at by the security for touching or taking flash photos.”可知，此处作者劝大家不要做这样不礼貌的事情，C项(如果你没有这样做过，就不要成为这样的人)符合语境。 Ⅲ.完形填空 (2024·大同高三统考)When our pet dog, Brandy, met the three ducklings we rescued, they took small bites of her soft hair. She was __1__ but she didn't stop them from doing that. She was __2__ to mother these ducklings as if they were her own. All feedings and playtimes from that time on were conducted __3__ Brandy's watch. The ducklings followed her everywhere and she always made sure they were not __4__. If one __5__ off, she'd herd it back to the other two. At naptime, they'd snuggle (偎依) with her in her __6__. The first time they __7__ Brandy to her water bowl, they dove right in. Brandy looked at me __8__ to say, “What am I supposed to do about this？” But she let them swim in it while __9__ water with quick movements of her tongue. Once the ducks matured, we __10__ them at the pond near __11__ we found them. They soon flew south for the winter. It was sad to see them go, but we were comforted that they had learned the __12__ skills they needed. Now, Brandy __13__ has some energy in her step when she realizes we're walking to the __14__—perhaps hoping her ducks will __15__ when the weather warms up. [语篇解读]　这是一篇记叙文，文章主要讲述作者的宠物狗Brandy和三只小鸭子之间的故事，Brandy把救回来的三只小鸭子当作自己的孩子一样照顾，鸭子们长大后被放走了，Brandy每次去池塘都显得很有活力，她或许是希望天气变暖时小鸭子们能回来。 1．A.joyful B．nervous C．calm D．curious 解析　B　考查形容词词义辨析。句意：她很紧张，但她并没有阻止它们那样做。joyful高兴的；nervous紧张的；calm冷静的；curious好奇的。根据上文“they took small bites of her soft hair”及下文的转折“but she didn't stop them from doing that”可知，小鸭子们啄Brandy的毛，Brandy虽然紧张，但是并没有阻止，故选B。 2．A.determined B．hesitant C．qualified D．unwilling 解析　A　考查形容词词义辨析。句意：她决心要把这些小鸭子当作自己的孩子来照顾。determine决心，决定；hesitant犹豫的；qualify有资格的；unwilling不愿意的。下文提到小鸭子们所有的喂食和玩耍时间都是在Brandy的看管下进行的，故此处指她决心把小鸭子当作自己的孩子来照顾，故选A。 3．A.beyond B．inside C．under D．through 解析　C　考查介词词义辨析。句意：从那时起，所有的喂食和玩耍时间都是在Brandy的看管下进行的。beyond超出；inside在……里面；under在……下面，由……控制(管理或经营)；through通过。根据上文“mother these ducklings as if they were her own”可知，Brandy应是精心照顾小鸭子们，所有的喂食和玩耍时间都是在Brandy的看管下进行的，故选C。 4．A.put away B．brought up C．taken back D．left behind 解析　D　考查动词短语辨析。句意：小鸭子们到哪里都跟着她，她总是确保它们不会被落下。put away收起，放好；bring up养育；take back带回；leave behind抛下，留下。根据“The ducklings followed her everywhere”可知，无论Brandy去哪，小鸭子们都跟着，不会被单独抛下，故选D。 5．A.knocked B．wandered C．broke D．drove 解析　B　考查动词词义辨析。句意：如果有一只走散了，她就会把它赶回去找另外两只。knock敲；wander游荡，闲逛；break打破；drive驾驶。根据“she'd herd it back to the other two”可知，此处指如果有一只小鸭子走散了，Brandy会把它赶回去，wander off走失，离散，故选B。 6．A.head B．face C．eyes D．hair 解析　D　考查名词词义辨析。句意：午睡时，它们会依偎在她的茸毛里。head头；face脸；eyes眼睛；hair头发。根据“they'd snuggle (偎依) with her”可知，小鸭子午睡时会依偎着Brandy，Brandy是一只宠物狗，故此处指在她的茸毛里。故选D。 7．A.persuaded B．followed C．permitted D．invited 解析　B　考查动词词义辨析。句意：它们第一次跟着Brandy走到她的水碗旁时，就一头扎了进去。persuade说服；follow跟随；permit允许，准许；invite邀请。根据上文“The ducklings followed her everywhere”以及空后“they dove right in”可知，小鸭子们总是跟着Brandy，此处指第一次跟着Brandy到水碗边上时，它们一头扎进去，故选B。 8．A.as if B．only if C．even if D．what if 解析　A　考查固定短语辨析。句意：Brandy看着我，好像在说：“这件事我该怎么办？”as if好像；only if只有；even if即使，虽然；what if如果……怎么办。根据“Brandy looked at me”可知，Brandy对小鸭子们很无奈，看着作者似乎在说：“这件事我该怎么办？”故选A。 9．A.playing B．pumping C．carrying D．drinking 解析　D　考查动词词义辨析。句意：但她让它们在里面游泳，同时用舌头快速运动喝水。play玩；pump用泵抽送，涌出；carry携带；drink喝。根据“with quick movements of her tongue”可知，Brandy快速从水碗里喝水，故选D。 10．A.raised B．abandoned C．released D．seized 解析　C　考查动词词义辨析。句意：等鸭子们长大了，我们就把它们放回我们发现它们的地方附近的池塘里。raise提升，举起；abandon遗弃；release释放，放走；seize抓住。根据下文“They soon flew south for the winter. (它们很快飞往南方过冬)”可知，作者放走了小鸭子，故选C。 11．A.where B．what C．which D．when 解析　A　考查连接词词义辨析。句意同上。where哪里；what什么；which哪一个；when何时。分析句子可知，此处引导宾语从句，作介词near的宾语，结合句意可知，此处指“在我们发现它们的地方的附近”，引导词在从句中作地点状语，故用连接副词where引导。故选A。 12．A.communication B．management C．performance D．survival 解析　D　考查名词词义辨析。句意：看到它们离开，我们很难过，但让我们感到欣慰的是，它们学会了生存所需的技能。communication交流；management管理；performance表演；survival生存。上文“Once the ducks matured”提到小鸭子们长大了，根据“It was sad to see them go”及转折词but可知，虽然看着小鸭子离开很难过，但是令人欣慰的是它们学会了生存所需的技能，故选D。 13．A.always B．merely C．seldom D．hardly 解析　A　考查副词词义辨析。句意：现在，当Brandy意识到我们正走向池塘时，她的脚步总是有些活力——也许是希望她的鸭子们能在天气变暖时回来。always总是；merely仅仅，只不过；seldom很少；hardly几乎不。结合上文Brandy精心照料小鸭子及语境可知，Brandy很想念小鸭子，故知道是去池塘，她的脚步就总是很有活力，故选A。 14．A.house B．garden C．pond D．park 解析　C　考查名词词义辨析。句意同上。house房子；garden花园；pond池塘；park公园。根据上文“we __10__ them at the pond”可知，小鸭子是被放生到池塘里，所以此处指当Brandy意识到我们正走向池塘时，她的脚步总是很有活力，故选C。 15．A.leave B．return C．grow D．swim 解析　B　考查动词词义辨析。句意同上。leave离开；return返回；grow成长；swim游泳。根据语境及“when the weather warms up”可知，Brandy希望天气变暖时鸭子们还会回来，故选B。 B级　写作规范练 Ⅰ.语法填空 (2024·邵东三中阶段检测)The Grand Canal of China was first dug in 486 BC, and well developed through the late 6th to early 10th century. From the late 13th until 19th century, with the highest section built and the overall length 1.________ (shorten), the Canal was turned into a main passage between northern 2.________ southern China as well as the economic lifeline of the country. Consisting of the Sui and Tang Grand Canal, the Jing­Hang Grand Canal and the Zhedong Canal, the Canal 3.________ (stretch) over 2, 700 kilometers, crossing eight provincial­level administrative regions and 4.________ (link) five major water systems. The Grand Canal also connects with the Eurasian Silk Road to the west and extends the water trade route to the east. The Grand Canal was 5.________ notable achievement of the ancient Chinese people. Its connection of the political and economic centers played a 6.________ (centre) role in the political unity, economic 7.________ (grow) and cultural prosperity of China, and contributed to the livelihood, exchanges and integration of the population along its route. The Grand Canal 8.________ (announce) by the State Council as one of the seventh batch of Major Historical and Cultural Sites Protected at the National Level in March, 2013 and registered 9.________ the UNSECO World Heritage List in June, 2014. This large­scale, living cultural heritage spreads like a huge dragon across the vast territory of China, 10.________ (it) ripples shining golden scales (鳞片) in the new age. [语篇解读]　这是一篇说明文。文章主要介绍了京杭大运河的大致情况及其对政治和经济的意义。 1．解析　shortened　考查非谓语动词。句意：从13世纪末到19世纪，随着最高段的建造和总长度的缩短，运河成为中国南北之间的主要通道和国家的经济命脉。在with复合结构中，空处应填非谓语动词作宾补，shorten和逻辑主语length之间为被动关系，用过去分词。故填shortened。 2．解析　and　考查固定短语。句意同上。结合句意表达“在……和……之间”用between...and...。故填and。 3．解析　stretches　考查时态。句意：运河由隋、唐大运河、京杭大运河和浙东运河组成，全长2 700多公里，横跨八个省级行政区，连接五大水系。空处为句子谓语动词，陈述客观事实，用一般现在时，主语the Canal是第三人称单数，谓语动词用单数形式。故填stretches。 4．解析　linking　考查非谓语动词。句意同上。空处和上文crossing并列作状语，应用非谓语动词形式，逻辑主语 the Canal和link之间为主动关系，应用现在分词。故填linking。 5．解析　a　考查冠词。句意：大运河是古代中国人民的一项显著成就。achievement意为“成就”时是可数名词，此处是泛指，应用不定冠词修饰，且notable的发音是辅音音素开头，故填a。 6．解析　central　考查形容词。句意：其政治和经济中心的联系在中国的政治团结、经济增长和文化繁荣中发挥了核心作用，并为沿线人口的生计、交流和融合做出了贡献。修饰名词role应用形容词central“核心的”作定语。故填central。 7．解析　growth　考查名词。句意同上。空处应填名词和上文the political unity以及下文cultural prosperity并列作介词in的宾语，growth“增长”是抽象名词，不可数。故填growth。 8．解析　was announced　考查时态和语态。句意：大运河于2013年3月被国务院宣布为第七批国家级重点历史文化保护遗址之一，并于2014年6月被联合国教科文组织列入《世界遗产名录》。空处和下文registered是并列的谓语动词，陈述过去的事情，且主语The Grand Canal和announce之间是被动关系，故应用一般过去时的被动语态，主语是第三人称单数，谓语动词用单数。故填was announced。 9．解析　on/in　考查介词。句意同上。结合句意表达“在……名录上”用on/in...list。故填on/in。 10．解析　its　考查代词。句意：这一大规模的、鲜活的文化遗产像一条巨龙一样在中国广袤的领土上传播，在新时代，它的涟漪闪耀着金色的鳞片。修饰名词ripples应用形容词性物主代词。故填its。 Ⅱ.应用文写作 (2024·兰州高中检测)假如你是李华，你有两张关于中国传统文化讲座的门票。在你校就读的交换生Jerry对中国文化很感兴趣。请你写一封电子邮件邀请他去听讲座。内容包括： 1．发出邀请；2.讲座介绍；3.表达愿望。 注意：1.词数80左右； 2．开头和结尾已给出，不计入总词数。 Dear Jerry， ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Yours， Li Hua One possible version： Dear_Jerry， Happy to hear that you are deeply fascinated with Chinese culture, I'm writing to invite you to attend a lecture on China's 24 Solar Terms. The lecture is scheduled from 7: 00 p．m.to 9: 00 p．m. next Friday in the auditorium hall. We are honored to have Professor Li, who is a celebrated expert to deliver the lecture. Not only will he introduce us the origin and customs of each Solar Term at length, but he will also explain how it influences people's way of life in China. I believe it won't disappoint you. Looking forward to your participation. Yours， Li_Hua Ⅲ.读后续写 (2024·太原十二中阶段练习)阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。 One morning in spring four students were walking to school. There had been a rain, and the ground was very soft. Water was dropping from the trees, and the grass was wet. The four students walked along, one behind another, because the pathway was narrow (狭窄的) and the mud (泥) on either side of it was deep. They walked, talked and laughed. As they were passing through some small trees, they heard a great fluttering (拍翅膀) over their heads and a weak chirping (鸣叫) in the grass by the roadside. “Tweet! Tweet! Tweet！” came from the leafy branches above them.“Cheep! Cheep! Cheep！” came from the wet grass. “What is the matter here？” asked the first student, whose name was Speed. “Oh, there are two young birds. Maybe the storm has blown two of the little ones out of the nest. They are too young to fly，” said the second student, whose name was Hardin. “What a pity! They'll die down there in the grass，” said the third student Martin. “Oh, well! We still need to hurry to school. We're going to be late，” said Speed. “Why should we bother？” After Speed's words, the first three students walked on, talking and laughing as before. 注意：1.续写词数应为150左右； 2．请按如下格式作答。 But the fourth student, whose name was David, stopped. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ All were surprised to find that David was not with them when the roll call (点名) was made. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ One possible version： But the fourth student, whose name was David, stopped.He bent down and very gently took the little ones up in his warm hands. “Never mind, my little fellows，” said David. “I will put you in your own cozy little bed.” Then he looked up to find the nest from which they had fallen. It was high, much higher than he could reach. But David could climb. He had climbed many a tree when he was a boy. He put the birds softly, one by one, into their warm little home. At this time, the first three students had already reached school. All were surprised to find that David was not with them when the roll call (点名) was made. Just when the teacher was to be angry, Hardin explained, “We met two fallen birds on our way to school. Very likely David has stopped to take care of them.” In a few minutes, David appeared at the door of the classroom out of breath. His shoes were covered with mud, and he had torn his coat on the thorny tree. Just as he was about to accept the teacher's criticism, to his surprise, all the students sang the song Hero with the “Tweet! Tweet！” and “Cheep! Cheep！” sound from the birds outside the classroom. 学科网（北京）股份有限公司 $$