内容正文:
高中英语 必修第一册
On the first day of my senior high school, I came across May, an exchange student from China, who made a deep 1. (impress) on me.
Neatly dressed in school uniform, she looked a bit shy and awkward in the new surroundings. Sensing that she might be nervous about 2. (leave) alone, I introduced myself to her and offered to keep her company.
I helped her with the 3. (register) card, filling in personal details like gender, nationality and other information. Being 4. outgoing girl, I quickly put her at ease and we even became learning partners.
I found that she had clear learning goals and useful 5. (strategy). In the lecture hall, she took notes carefully, fully focused on the speaker. However, she grew 6. (annoy) when she failed in experiments in the physics lab. With my assistance, she finally made it. At last she felt less anxious and built up 7. (confident) in physics.
When school ended at 6 pm, we revised lessons together, and then I showed her around 8. (explore) the campus. Fascinated by everything, we shared many stories. She dreams of becoming a 9. (design) while I look forward to 10. (run) my own company in the future. What a lovely day!
❶ exchange n.交换;交流 vt.交换;交流;交易;兑换
(1)an exchange student 交换生
in exchange for… 作为……的交换;以换取……
(2)exchange sth for sth 把……换成……
exchange sth with sb 与某人交换某物
[考点多维练]——单句填空
①[《鲁滨逊漂流记》] He offered his services as a guide in exchange a place to stay for the night.
②[译林必修一] Last year, I had the chance to study at a British secondary school as exchange student.
③ (exchange)gifts and sending greeting cards are common ways to celebrate this festival around the world today.
[写作步步升]——完成句子
④It was through the cultural exchange activity on culture shock. (应用文写作之活动感受)
正是通过这次文化交流活动,我们就文化冲击彼此交换了看法。
⑤[2024·新课标Ⅰ/Ⅱ卷读后续写] I thanked him with the biggest smile and we before I got on the bus.
我带着最灿烂的笑容向他道谢,并且在上车前,我们交换了联系方式。
❷ design n. 设计; 设计方案 vt. 设计;筹划
(1)be designed for sb/sth 为……而设计
be designed to do sth 目的是做……;为做……而设计
(2)by design (=on purpose) 故意地,蓄意地
(3)designer n. 设计者,设计师
[考点多维练]——单句填空
①[2019·全国卷Ⅲ] For Western (design), China and its rich culture have long been an inspiration for Western creative.
②[北师必修二] He engaged in a wide range of exercises (design) to rebuild muscle, and made remarkable progress.
③[2025·全国二卷] Though wastED received enthusiastic reviews, it (design) from the start as a short-lived experiment.
[写作步步升]——完成句子
④[2021·新高考全国Ⅰ/Ⅱ卷应用文写作] Many columns of the English newspaper Youth senior high school students and they enrich our campus life.
英文报《青年》的许多栏目是专门为高中生设计的,旨在丰富我们的校园生活。
⑤[2025·全国一卷应用文写作] This column, , will introduce a mystery person each week by providing interesting clues about their hobbies, achievements, or daily life.
本专栏旨在增进学生间的互动,每周会通过提供关于某位神秘人物的爱好、成就或日常生活的趣味线索,来介绍这个人。
❸ anxious adj.焦虑的,不安的;渴望的
(1)be anxious about sth 为某事担心/担忧
be anxious for sth/to do sth 渴望某物/做某事
(2)anxiety n. 焦虑,忧虑,担心
with anxiety(=anxiously) 焦虑地
[温馨提示]
anxious adj.→n. anxiety焦虑;忧虑
various adj.→n. variety多样化;变化;种类
[考点多维练]——单句填空
①After two defeats, the team are now anxious a victory to cheer up the players.
②[2022·全国甲卷] When I was 14, I was so anxious (see) more art that a friend of mine and I bicycled across the Alps to see Venus.
③[沪教选必一] Exercising for 20 to 30 minutes a day helps to reduce stress and (anxious)and makes you feel more positive and optimistic because it releases endorphins (feel-good chemicals).
[写作步步升]——完成句子
④Faced with the unfamiliar surroundings, I . I couldn’t adapt to the new school. , my English teacher encouraged me to face everything courageously. (读后续写之心理描写)
面对陌生的环境,我感到焦虑和孤独。我无法适应新学校。看到我的焦虑,我的英语老师鼓励我勇敢面对一切。
⑤[2025·浙江1月考读后续写] Frozen for a second, Kevin let out a sigh of regret and , “Hurry! Let’s go to the police station right now.”
凯文愣了一秒钟,发出一声悔恨的叹息,焦急地说:“快点!我们现在就去警察局。”
❹ annoy vt.使恼怒;打扰
(1)annoy sb with sth/by doing sth
因(做)某事使某人烦恼
(2)annoyed adj. 恼怒的;生气的
be annoyed with sb 对某人感到生气
be annoyed at/about sth 因某事生气
(3)annoying adj. 使恼怒的;使生气的
(4)annoyance n. 恼怒,生气;使人烦
恼的事
[考点多维练]——单句填空
①[2023·全国甲卷] You’ll soon find that the more patience you practise, the more you start to apply it to other, more (annoy) situations.
②[2021·浙江6月考] If you ever get the impression that your dog can “tell” whether you look content or (annoy), you may be onto something.
③To everyone’s (annoy), the open-air concert scheduled to start at 3 pm was forced to be cancelled due to the sudden rainstorm.
[写作步步升]——完成句子
④I am writing to express my dissatisfaction with the constant noise from the nearby construction site, many residents and affecting our daily rest.(应用文写作之投诉信)
我写信表达我对附近建筑工地持续噪声的不满,该噪声一直困扰着许多居民并影响我们的日常休息。
⑤ was that the cake she baked for her mum’s birthday collapsed in the oven, and she had no time to make another one.(读后续写之心理描写)
最让她恼火的是,她为妈妈生日烤的蛋糕在烤箱里塌了,而且她已经没时间再做一个了。
❺ frightened adj.惊吓的;害怕的
(1)be frightened of… 害怕……
be frightened to do sth 害怕做某事
be frightened to death 吓得要死
(2)frighten v. 使惊吓;吓唬
frighten sb/sth off/away 将某人/某物吓跑
frighten sb into (doing) sth
把某人吓得(做)某事
(3)frightening adj. 令人恐惧的
[考点多维练]——单句填空
①[2020·全国新高考Ⅱ卷] He kicked it wide open, finding a (frighten) woman in a wheelchair with a little boy and a tiny baby.
②[沪教必修二] Have you ever done something dangerous or (frighten) without thinking about what happens next?
③The earthquake shook the building violently, (frighten) everyone into rushing towards the exits.
[写作步步升]——完成句子
④When giving her speech for the first time on the stage, she she could not fix her thoughts on anything. (读后续写之心理描写)
当她第一次上台演讲时,她非常害怕,以至于什么都想不起来。
⑤She , her eyes wide with pure fear as the bear suddenly stood up and let out a low roar.(读后续写之心理与神态描写)
当熊突然站起身发出低沉吼声时,她吓得一句话也说不出来,双眼因纯粹的恐惧而瞪得浑圆。
❻ impression n.印象;感想
(1)make/leave/have an impression on/upon
给……留下印象
(2)impress v. 使钦佩;给……留下印象;使铭记
impress sth on/upon sb 使某人意识到某事
impress sb with sth 某事物使某人印象
深刻
be impressed by/with 对……印象深刻
What impresses sb most is sth/that…
让某人印象最为深刻的是……
(3)impressive adj. 使人印象深刻的;令
人难忘的
[考点多维练]——单句填空
①[2022·全国甲卷] Antarctica left an (impress) on me that no other place has.
②[2025·全国二卷] The Hereford Cathedral is the most (impress) building in town. It’s also home to an ancient library.
③[译林选必一] Even the most uninformed reader would not fail (impress) by the poet’s rich imagination.
[写作步步升]——完成句子
④[2021·浙江6月考应用文写作] Yesterday, I had an opportunity to appreciate the artworks of talented students, .
昨天,我有机会欣赏了有才华的学生们的艺术作品,这些作品完全给我留下了深刻的印象。
⑤[2023·全国甲卷书面表达] is his famous philosophy of life: “Be the first to worry about the troubles across the land, the last to enjoy universal happiness.”
最让我印象深刻的是他著名的人生哲学:“先天下之忧而忧,后天下之乐而乐。”
❼ curious adj.好奇的,求知欲强的
(1)be curious about sth 对某事好奇
be curious to do sth 极想做某事
(2)curiosity n. 好奇心
with curiosity 好奇地
out of curiosity 出于好奇
[考点多维练]——单句填空
①[译林选必三] From the very early days of human life on the Earth, our (curious) about the unknown has kept us adventuring into new places.
②[2022·全国甲卷] So Mr Peter Cells, I’d be curious (know) what were the early connections in your life that led you into the art field.
③He was so curious how the machine worked that he took it apart, only to realize he couldn’t put it back together.
[写作步步升]——完成句子
④She , her heart pounding with excitement and fear.(读后续写之心理描写)
她好奇地打开那个旧木盒,心脏因兴奋和恐惧而怦怦直跳。
⑤[2025·全国二卷读后续写] As I spoke, I noticed the attention of my classmates, .(shine)
我说话时,注意到同学们都在关注着我,他们的眼神中透着好奇与敬佩。
❶ leave…alone 不打扰;不惊动
(1)let alone 更不用说
(2)leave behind 遗留;留下;遗忘;把……抛在后面
leave for 出发去……
leave…aside 不予考虑;把……搁置一边
leave out 省略;遗漏;不考虑……
[考点多维练]——短语填空
①When studying, she always tells her family to her , as any distraction will break her focus.
②Working this way for one year was painful enough, a lifetime.
③[上外必修一] Entering adulthood means that a young person must soon childishness and start to shoulder grown-up responsibilities.
[写作步步升]——完成句子
④He made a decision to focus on his own goals, .(读后续写之心理描写)
他下定决心专注于自己的目标,不再理会别人的看法。
⑤[2024·全国甲卷] While the adults were busy with their serious talk outside, I to help my grandmother wash dishes.
当大人们在外面忙着严肃交谈时,我独自一人留在厨房里帮奶奶洗碗。
❷ look forward to 盼望;期待
[温馨提示]
look forward to中的to为介词,后接名词或v.-ing形式。
[考点多维练]——单句填空
①[2024·全国甲卷] We look forward to (welcome) you as we showcase the creativity of the Harvard arts community through performances, art exhibitions and art-making activities.
②We were very excited when hearing that the holiday we had been looking forward to (come) at last.
[写作步步升]——完成句子
③Small acts of kindness will go a long way. We . (应用文写作之倡议书)
小小的善举会有很大的帮助。我们期待您的积极参与。
④Thanks for your kind consideration and I .(应用文写作之结尾句)
感谢您的善意考虑,我期待着尽快收到您的回复。
● (教材P4)I found most of my classmates and teachers friendly and helpful.
我觉得我的大多数同学和老师都很友好,而且乐于助人。
“find+宾语+宾补”结构
句型公式
【句式点拨】
此句中使用了“find+宾语+宾补”结构,形容词friendly和helpful在句中作宾语补足语。
【相关拓展】
(1)“find+宾语+宾补”结构中可以作宾补的有:
(2)find oneself…意为“在不知不觉中发现自己处于某种境地”。
(3)find+it+adj./n.+to do (it作形式宾语,to do作真正的宾语)
[考点多维练]——单句填空
①[2023·北京卷] I found myself (work) with a robotics professor on techniques for collecting data from the desert remotely.
②[2022·全国甲卷] As Ginni Bazlinton reached Antarctica, she found herself (greet) by a group of little Gentoo penguins longing to say hello.
③[译林必修二] After learning the basics of tai chi in those first few classes, I found myself (bore) and (ache) from doing the same moves over and over again.
[写作步步升]——完成句子
④Alex struggled to reach the surface but a powerful current. (读后续写之动作描写)
亚历克斯挣扎着浮出水面,但发现自己被困在一股强大的水流中。
⑤[2022·新高考全国Ⅰ/Ⅱ卷] After making sure that David could run if he wanted, , his small body rocking from side to side as he swung his feet forward.(读后续写之动作描写)
在确定戴维想跑就可以跑之后,我转过身来,发现他向我走来,双脚向前摆动时,他的小身体左右摇摆。
●Ⅰ 单句填空
1.On seeing the scene, she was so that she burst out crying. (frighten)
2.[上外选必一] Sometimes you may worry about grades or get (annoy)because you don’t have the most expensive sneakers or the latest computer games.
3.[沪教必修二] I started to swim out of (curious), and then I found that I just couldn’t stop.
4. (lecture) by the teacher for being late again, she promised to be punctual in the future.
5.[2024·全国甲卷] Cats have many heightened senses, but their sense of smell is quite (impress).
6.[2021·新高考全国Ⅰ卷] With a smile of understanding (flash) across his face, Dad suddenly figured out their secret.
7.I’m looking forward to (exchange) ideas with the designer after the lecture.
8.[2023·新高考全国Ⅰ卷] Whatever the mistake, remember it isn’t a fixed aspect of your (personal).
9.If you want to take a book out, you just need to fill in and submit a (register) form for a library card.
10.[译林选修三] Creativity could mean making a minor (improve) to an everyday situation or finding a simple solution to an everyday problem.
11.[沪教选必四] This is a big milestone in the history of the Chinese space programme, and also an important step in the (explore) of the universe.
12.[2023·新高考全国Ⅰ卷] With over 2,500 bikes stored in our five rental shops at (strategy) locations, we make sure there is always a bike available for you.
13.[沪教选必三] A good night’s sleep is crucial for maintaining normal (concentrate) and focus, as well as a healthy body and mind.
14.It’s just an (formal) party, so you can wear anything you want, like T-shirts and jeans.
15.Regular practice not only improves your skills but also boosts your (confident) in dealing with challenging tasks.
●Ⅱ 短语检测
1.She’s asked to (不打扰) but the press photographers follow her everywhere.
2.Many students (报名参加) these courses last semester to widen skills for use in their future jobs.
3.[外研必修一] While I was (集中精力于) photographing this amazing scene, I suddenly had a feeling that I was being watched.
4.I have been (盼望) having a chance to pay a visit to Huangshan.
5. (记笔记) and reviewing them are among the simple learning habits we too often overlook.
6.I (对……感到好奇) the silence, then returned to the door of Iris’ room and looked in.
7.After a long and tiring journey through the storm, they reached their destination (终于,最终).
8.[译林必修二] I did not understand all of the traditional customs, but a few (留下深刻的印象) on me.
●Ⅲ 句型写作
1.She often when she meets with certain challenges. (find+宾语+宾补) (读后续写之心理描写)
当她碰到一些挑战时,她经常发现自己很无助。
2.The old gardener never watered the roses , as if they were his old friends.(never…without) (读后续写之动作描写)
这位老园丁给玫瑰浇水时,从来都会跟它们轻声说几句话,仿佛它们是他的老朋友。
3.The hiker realized he’d lost his phone and map in the forest. ? Panic started to creep in.(what if) (读后续写之心理描写)
徒步者发现自己在森林里弄丢了手机和地图。要是天黑前找不到路该怎么办?恐慌开始蔓延。
4. gave us a deeper understanding of its rich past.(explore) (应用文写作之活动总结)
探索这座城市的历史遗迹让我们对它丰富的过去有了更深刻的理解。
●Ⅰ 动词变形练
1.Children under 10 are not allowed to enter the museum unless (accompany) by adults.
2.It was no wonder that the artist (admit) to that big company since he stood out among those applicants.
3.The delayed bus and the sudden rain (annoy) him so much this morning that he is still in a bad mood now.
4.The man (apply) for the post of signalman on the railway, but was turned down as he was colour-blind.
5.When the old system failed, a need for a more efficient replacement (arise) immediately.
6.It is the third time that such problems (arise) about your arrangement.
7.He (awake) from a deep sleep, only to find his son was gone.
●Ⅱ 构词法规则
构词法
前缀dis-表示“否定”、 “相反”;
dis-还有“分开,分离”的意思
指出下列黑体词的含义
1.[2025·全国二卷] This approach spared me the discomfort of having to over-explain.
2.[2025·浙江1月考] Hearing Kevin’s words, Mr and Mrs Green looked at each other with a mixture of shock and disbelief.
3.[2023·新高考全国Ⅱ卷] The kids’ parents distrusted her.
4.[2022·全国甲卷] I was unwilling to talk with him and often disobeyed his rule of not staying out with my friends too late.
5.[2020·全国新高考Ⅰ卷] Follow all rules carefully to prevent disqualification.
●Ⅲ 熟词生义练
众所周知,初、高中英语教材中的单词清单所给出的只是每个单词最基本的意思,即“熟义”。然而,教材“熟词”在高考文章中却产生了“生义”或“多义”,这便是我们常说的“熟词生义”或“一词多义”现象。
指出下列黑体词在句中的不同含义
1.absent
①[2022·新高考全国Ⅰ卷] His usual big toothy smile was absent today.
②She looked absent during the meeting, as if her mind was elsewhere.
2.access
①[2025·浙江1月考] Interlibrary Loan (ILL) provides teachers, students and staff with access to books that are checked out or not owned by our own libraries…
②The emergency exit provides a safe access for people during a fire.
③[2021·全国甲卷] We accessed the wall through the South Gate.
3.address
①The envelope was addressed in neat handwriting, making it easy to read.
②[外研选必一] The event will begin at Williams Sports Centre at 6 pm with a welcome address followed by awards ceremony, with the evening closing at 8 pm.
③[2024·浙江1月考] Norman Stienwand, who farms in that area, has been addressing public meetings on this issue for years.
④[2024· 新课标Ⅱ卷] This absorbing new book by Catriona Campbell is a practical roadmap addressing the challenges posed by the forthcoming AI revolution (变革).
4.admission
①There’s a notice outside the building that says “No admission before twelve noon”.
②How much do they charge for admission?
③The company made an admission that its product had safety problems.
5.adopt
①The company plans to adopt a new strategy to improve its market position and increase profits.
②The family decided to adopt a puppy from the local animal shelter to give it a loving home.
Part Ⅰ 应用文写作
假设你是校学生会主席李华, 学校为落实学生“美学教育”(aesthetic education) 将举办“校园艺术节”,请你在学校英文报上写一封倡议信。内容包括:
1.介绍活动及其意义;
2.号召同学积极参与。
Dear fellow students,
1. (随着学校艺术节的临近), I’d like to highlight the importance of aesthetic education, 2. (它能帮助我们欣赏美、表达创造力,还能丰富我们的校园生活).
The festival will 3. (包括各种活动), including a painting exhibition, music performances, and a dance competition. These events provide a platform 4. (在那里每个人都能展示才华、发掘艺术潜能).5. (让我们抓住这个机会) to develop our artistic awareness and broaden our horizons. 6. (无论你是已有一定的艺术基础,还是刚刚开始接触艺术), your participation will make the festival more vibrant.
Sign up now and let’s create a memorable event together!
Yours,
Li Hua
Part Ⅱ 读后续写
1.情感细节描写——高兴与兴奋
【语言素材】
开心的;高兴的
delighted/cheerful/joyful
令某人开心/兴奋的是
to one’s delight/joy/excitement
满意的
pleased/satisfied
高兴地跳起舞来/跳起来
dance/jump for/with joy
非常兴奋的
thrilled/excited
情绪高涨
in high/cheerful spirits
欣喜若狂
be wild with joy/delight/happiness
狂喜的
overjoyed
高兴得无法形容
delighted/pleased beyond description
激动(地)
with excitement/excitedly
非常高兴
be seized by joy/be overcome with happiness
无法抑制内心的兴奋
can’t contain one’s excitement
脸上带着灿烂的微笑
with a bright smile on sb’s face/wear a bright smile/smile brightly
充满喜悦
be filled with joy/happiness
喜悦和幸福感
a sense of joy and happiness
(脸或眼睛)露出喜悦
(face/eyes) light up
【跟踪演练】
●Ⅰ 单句表达
1. , I skipped into the supermarket along with my smiling mother.
又高兴又激动,我蹦蹦跳跳地跟着我面带微笑的妈妈进了超市。
2.Sarah
as she opened the gift and discovered a plane ticket to her dream destination.
当萨拉打开礼物,发现一张去往自己梦想之地的机票时,她抑制不住内心的兴奋。
3.Her hands were trembling as she opened the box.
当她打开盒子时,她的手激动地发抖。
4.I was , hardly able to believe my good fortune.
我高兴得无法形容,几乎不敢相信自己有这样的好运。
5.After Steve heard this satisfactory result, swept over/flooded over/crowded in on him.
史蒂夫听到这个令人满意的结果后,一种喜悦和幸福感涌上心头。
●Ⅱ 语段表达(收到录取通知书+高兴与兴奋)
When I received the admission letter from my dream university, my face 1. (露出喜色). My heart pounded wildly and my hands began to tremble uncontrollably. Staring at the elegant letterhead,I was 2.
(欣喜若狂) and 3. (手舞足蹈). All the years of hard work, late-night study sessions, and self-doubt vanished in an instant, replaced by 4. (一种成就感和满足感).
I 5. (无法抑制自己的兴奋)and immediately called my parents. My voice 6. (因为激动而哽咽) as I shared the news. I heard 7. (自豪的笑声和愉快的喊声) from the other end of the line. I then rushed outside, the fresh air hitting my face like a gentle touch. The sun seemed to shine brighter and even the strangers I passed on the street seemed to 8. (分享着我的喜悦).
This was not just a moment of personal victory, but a milestone that would forever be engraved in my memory.
学科网(北京)股份有限公司
$
高中英语必修第一册
WELCOME UNIT
● 语篇词汇串记
1.impression 2.being left 3.registration 4.an
5.strategies 6.annoyed 7.confidence 8.to explore
9.designer 10.running
● 考点互动探究
单词点睛
❶ ①for ②an ③Exchanging ④that we exchanged views with each other ⑤exchanged contact information
❷ ①designers ②designed ③was designed ④are specially designed for; are designed to ⑤(which is) designed to boost/promote/enhance interaction among students
❸ ①for ②to see ③anxiety ④felt anxious and lonely; Seeing my anxiety ⑤said anxiously/with anxiety
❹ ①annoying ②annoyed ③annoyance ④which has been annoying ⑤What annoyed/bothered her most
❺ ①frightened ②frightening ③frightening ④was so frightened that ⑤was too frightened to utter a single word
❻ ①impression ②impressive ③to be impressed ④which totally left/made a deep impression on/upon me ⑤What impresses me most
❼ ①curiosity ②to know ③about ④opened the old wooden box curiously/with curiosity ⑤with curiosity and admiration shining in their eyes/their eyes shining with curiosity and admiration
短语储存
❶ ①leave; alone ②let alone ③leave; behind ④leaving other people’s opinions alone ⑤was left alone in the kitchen
❷ ①welcoming ②came ③look forward to your active participation ④look forward to receiving your earliest reply
句型透视
● ①working ②greeted ③bored;aching ④found himself trapped in ⑤I turned to find him coming towards me
● 当堂过关检测
Ⅰ.1.frightening; frightened 2.annoyed 3.curiosity
4.Lectured 5.impressive 6.flashing 7.exchanging
8.personality 9.registration 10.improvement
11.exploration 12.strategic 13.concentration
14.informal 15.confidence
Ⅱ.1.be left alone 2.registered for 3.concentrating on 4.looking forward to 5.Taking notes 6.was curious about 7.at last 8.made/left a deep impression
Ⅲ.1.finds herself helpless
2.without whispering a few words to them
3.What if he couldn’t find the trail before dark
4.Exploring the historical sites of the city
● 语言素养提升
Ⅰ.1.accompanied 2.was admitted 3.have annoyed
4.applied 5.arose 6.have arisen 7.awoke
Ⅱ.1.不适 2.难以置信 3.不信任 4.不服从,违抗
5.不合格,失去资格
Ⅲ.1.①不存在的,缺少的 ②心不在焉的
2.①机会 ②通道 ③到达,进入
3.①写姓名地址 ②演讲,致辞 ③发表演说 ④设法解决,处理
4.①准许进入 ②入场费,门票费 ③承认
5.①采用,采纳 ②领养
● 写作素养提升
Part Ⅰ 应用文写作
1.With our school’s Art Festival around the corner 2.which helps us appreciate beauty, express creativity, and enriches our campus lives 3.feature a variety of activities 4.where everyone can showcase their talents and explore their artistic potential 5.Let’s embrace/seize this opportunity 6.Whether you’re already skilled in art or just starting to explore it
Part Ⅱ 读后续写
1.情感细节描写——高兴与兴奋
【跟踪演练】
Ⅰ.1.Delighted and thrilled 2.couldn’t contain her excitement 3.with excitement 4.delighted/pleased beyond description 5.a sense of joy and happiness
Ⅱ.1.lit up 2.overjoyed 3.waved my arms and danced joyfully 4.a sense of achievement and satisfaction 5.couldn’t contain my excitement 6.choked with excitement 7.proud laughter and delighted shouts 8.share my joy
学科网(北京)股份有限公司
$