期中复习 Unit 3- Unit 4 重点词汇变形短语固定搭配复习+练习 2025-2026学年人教版八年级英语下册

2026春人教版八下英语期中复习 Unit 3- Unit 4 词汇专题 单元重点词汇变形&短语&固定搭配复习+练习 Unit 3 Growing Up 1.emotion n. 情感；情绪 → emotional adj. 情感的；情绪的 → 短语: deal with emotions 处理情绪 2.lonely adj. 孤独的；寂寞的(表语或定语) → loneliness n. 孤独；寂寞→短语：fight against loneliness 对抗孤独→ alone adj.&adv. 单独; 独自(形容词只作表语) 3.advise v. 建议；劝告 →搭配: advise sb. to do sth. 建议某人做某事→ advice n. 建议；劝告 【⭐不可数名词】→短语: a piece of advice 一条建议 follow one's advice 遵循某人的建议 4.hurtful adj. 伤感情的 → hurt v. 伤害；n. 伤害 (过去式和过去分词不变化hurt-hurt-hurt ) 5.anger n. 怒火 → 短语: control one's anger 控制某人的怒火 → angry adj. 生气的；愤怒的 →短语: be angry with 对......生气→ angrily adv. 生气地；愤怒地 6.forgive v.（forgave，forgiven）原谅；宽恕 → forgiveness n. 原谅；宽恕 7.clearly adv. 清楚地 → clear adj. 清晰的；v. 清理 → 短语: clear the air 尽释前嫌 8.pressure n. 压力 【⭐不可数名词】→短语: too much pressure 太多压力 → press v. 压；按 9.purpose n. 目的; 意图 →短语: on purpose 故意; 有意地 10.shut v. 关闭(过去式和过去分词不变化 shut-shut-shut) →短语: shut ...away 把......关起来; 隔离 11.lastly adv. 最后→ last adj. 最后的;最近的 12.plenty pron. 充足; 大量 →短语: plenty of 充足; 大量 13.enter v. 进入→ entrance n. 入口；进入 → 短语: the entrance to ......的入口 14.dare 作实义动词，“敢于” →搭配: dare to do sth. 敢做某事 作情态动词，“敢于” →搭配: dare do sth. 敢做某事 15.decision n. 决定→ decide v. 决定；断定 →搭配: decide to do sth. 决定做某事 16.proud adj. 骄傲的；自豪的→ proudly adv. 骄傲地；自豪地→ pride n. 骄傲；自豪 →搭配: be proud of = take pride in 为......感到骄傲/自豪 17.solution n. 解决办法；解决 → 短语: the solution to ......的解决方法→ solve v. 解决；解答 18.apologize （=apologise）v. 道歉 →搭配: apologize to sb. for doing sth. 因某事向某人道歉 → apology n. 道歉；歉意 【可数名词】→短语: make an apology to sb. 向某人抱歉 19.joyful adj. 高兴的；令人愉快的→ joy n. 欢乐；喜悦 20.thankful adj. 感谢的；感激的→搭配: be thankful for sth. 因某事而感激 → thank v. 感谢；n. 感谢 →搭配: thank sb. for doing sth. 因某事而感谢某人 21.negative adj. 否定的 n. 否定；负数→ negatively adv. 否定地；消极地→ positive adj. 积极的; 乐观的(反义词) 22.behave v. 表现；举止得体→ 短语: behave oneself 举止得体 → behavior n. 行为；举止 23.differently adv. 不同地→ different adj. 不同的；有差异的→短语: be different from 和......不同 → difference n. 差异；不同 →短语: the differences between ..and... ......和......的不同 24.physics n. 物理；物理学→ physical adj. 物理的；身体的→ physicist n. 物理学家【注意发音/'fɪzɪsɪst/】 → physician n. 内科医生 25.lie ①v.（lay，lain）平躺；平放； n. 谎言；假象 ② lie v.（lied，lied）撒谎;说谎→ 短语: lie to sb. 对某人撒谎 tell a lie 说谎 lie down 躺下 26.awake adj. 醒着的→ wake v.醒; 醒来(常用，可与up连用) →短语: wake up 醒来 27.normal adj. 正常的；普通的→ normally adv. 正常地；通常→ abnormal adj. 正常的；反常的 28.mean adj. 刻薄的；吝啬的；v. 意思是；意味着→ meaning n. 意思；含义→ meaningful adj. 重要的；重大的 29.deep adj. 深的；有……深的 →短语: take a deep breath 深呼吸→ depth n. 深度；深处 【Part 1】基础练习: 结合语境，用所给词的适当形式填空。 1. Teenagers often experience different kinds of __________ (emotion) and need to learn how to deal with them. 2. Moving to a new city, he felt __________ at first, but soon he got used to the new life and forgot __________ . (lonely) 3. My mother gave me some useful __________ and __________ me to read more books. (advise) 4. Saying __________ words will __________ others’ feelings deeply.(hurt) 5. When you are __________ , try to control your __________ and speak calmly.(anger) 6. Learning to __________others is important, and __________ can bring us peace of mind .(forgive) 7. Please speak more __________(clear) so that everyone can understand your ideas . 8. Too much __________(press) from study makes students feel stressed, and they hope to have more holidays . 9. — Did you break the cup on __________? (purpose) — No, it was an accident. 10. Remember __________(shut) the door when you leave the classroom. 11. __________ (last), I would like to express my __________ (thank) to my parents for their endless support. 12. There __________ (be) plenty of water in the bottle, so don't throw it away. 13. After a long day’s work, he was so tired that he __________ down on the sofa and soon fell asleep. (lie) 14. She __________ (dare) to climb the mountain alone, and her spirit surprised us. 15. After a long discussion, they finally made a __________ and __________ to start the project next week .(decide) 16. My parents were very __________ of my progress, and they __________ displayed my certificate(证书).(proud) 17. Can you find a good __________ to this problem? How can we __________ it ? (solve) 18. You should __________ to your friend and make an __________ for being late. (apology) 19. The children were full of __________ and jumped __________ when they heard the news. (joy) 20. I’m very __________ (thank) to my teacher for helping me with my schoolwork. 21. Try to think __________ (positive) instead of looking at things __________ (negative). 22. We should always __________ well in public, and good __________ is necessary. (behave) 23. Tom did __________ from his brother, and there are many __________ between their answers. (different) 24. I’m interested in __________ , and I want to be a __________ in the future. (physics) 25. The boy __________ to his mother yesterday because he didn’t want to get into trouble. (lie) 【Part 2】提升练习: 根据括号里的短语提示，完成句子翻译。 1.不管发火是正常的，但是我们需要学会如何处理自己的情绪。(get angry; deal with) ____________________________________________________________________________________________________________ 2.李明去年搬去了一个新城市。他独自一人生活，但他并不感到孤独。(alone; lonely) ____________________________________________________________________________________________________________ 3.我喉咙痛，医生建议我多喝水。(advise sb. to do sth.) ____________________________________________________________________________________________________________ 4.昨天他对我说了一些伤感情的话。但我知道他不是故意的。(hurtful; on purpose) ____________________________________________________________________________________________________________ 5.当你生气的时候，试着控制你的怒火，而不是对他人大喊大叫。(control your anger; shout at) ____________________________________________________________________________________________________________ 6.我们应该学会原谅别人的小错误，并给予他们第二次机会。(forgive) ____________________________________________________________________________________________________________ 7.她很感激家人在困难时期的支持。(be thankful for sth. ) ____________________________________________________________________________________________________________ 8.尽管学生们对这次旅行很兴奋，他们在公交车上还是设法保持了得体的举止。(behave oneself) ____________________________________________________________________________________________________________ 9.她没有选择把自己封闭起来，而是勇敢地面对问题并寻求帮助。(shut oneself away) ____________________________________________________________________________________________________________ 10.每当你在演讲前感到紧张时，记得深吸一口气，自信地微笑。(whenever; take a deep breath) ____________________________________________________________________________________________________________ 11.很多学生在课堂上不敢提问，因为他们担心会出错。(dare to do sth.) ____________________________________________________________________________________________________________ 12.我们应该为自己的中国文化感到自豪，并尽力把它传播到世界各地。(be proud of) ____________________________________________________________________________________________________________ 13.他意识到自己错了，决定因制造太多噪音而向邻居道歉。 (realize; apologize to sb. for doing sth.) ____________________________________________________________________________________________________________ 14.与其保持沉默，不如坦诚沟通，尽释前嫌。(It's better to...; clear the air) ____________________________________________________________________________________________________________ 参考答案 【Part 1】基础练习: 结合语境，用所给词的适当形式填空。 1.【答案】 emotions 【解析】 空格前有介词of，且different kinds of后接可数名词复数，故填emotion的复数形式emotions。 2.【答案】 lonely; loneliness 【解析】 第一空作系动词felt的表语，表示“感到孤独的”，用形容词lonely；第二空作动词forgot的宾语，表示“孤独（这种状态）”，用名词loneliness。 3.【答案】 advice; advised 【解析】 第一空在some useful后，advice是不可数名词，故用原形；第二空是句子的谓语，根据gave可知时态为一般过去时，故填advised。 4.【答案】 hurtful; hurt 【解析】 第一空修饰名词words，应用形容词hurtful（伤感情的）；第二空在助动词will后，应用动词原形hurt。 5.【答案】 angry; anger 【解析】 第一空在系动词are后作表语，应用形容词angry；第二空在形容词性物主代词your后，应用名词anger。 6.【答案】 forgive; forgiveness 【解析】 第一空在learn to后，应用动词原形forgive；第二空作主语，应用名词forgiveness。 7.【答案】 clearly 【解析】 修饰动词speak，应用副词形式clearly。 8.【答案】 pressure 【解析】 空格前much修饰不可数名词，press的名词形式pressure意为“压力”，是不可数名词。 9.【答案】 purpose 【解析】 on purpose是固定短语，意为“故意”。 10. 【答案】 to shut 【解析】 remember to do sth.表示“记得去做某事（未做）”，remember doing sth.表示“记得做过某事（已做）”。根据语境“离开教室时记得关门”，此处用to shut更符合提醒的语境。 11. 【答案】 Lastly; thanks 【解析】 第一空位于句首，修饰整个句子，应用副词Lastly；第二空在形容词性物主代词my后，应用名词thanks（感谢）。 12. 【答案】 is 【解析】 此处考查there be句型的就近原则。plenty of后接不可数名词water，故be动词用is。 13. 【答案】 lay 【解析】 此处lie意为“平躺”，根据fell可知时态为一般过去时，其过去式为lay。 14. 【答案】 dares / dared 【解析】 此处dare作实义动词，意为“敢于”。根据语境可用一般现在时（第三人称单数dares）或一般过去时（dared）。 15. 【答案】 decision; decided 【解析】 第一空在a后，应用名词decision；第二空是句子的谓语，根据前面的made可知时态为一般过去时，故填decided。 16. 【答案】 proud; proudly 【解析】 第一空在were后作表语，应用形容词proud；第二空修饰动词showed，应用副词proudly。 17. 【答案】 solution; solve 【解析】 第一空在a good后，应用名词solution；第二空在情态动词can后，应用动词原形solve。 18. 【答案】 apologize; apology 【解析】 第一空在情态动词should后，应用动词原形apologize；第二空在an后，应用名词apology。 19. 【答案】 joy; joyfully 【解析】 第一空在介词of后，应用名词joy；第二空修饰动词jumped，应用副词joyfully。 20. 【答案】 thankful 【解析】 在系动词am后作表语，应用形容词thankful。 21. 【答案】 positively; negatively 【解析】 两空均需副词修饰动词think和looking at，故填positively和negatively。 22. 【答案】 behave; behavior 【解析】 第一空在情态动词should后，应用动词原形behave；第二空在good后，应用名词behavior。 23. 【答案】 differently; differences 【解析】 第一空修饰动词did，应用副词differently；第二空在many后，应用名词复数differences。 24. 【答案】 physics; physicist 【解析】 第一空表示学科“物理”，用physics；第二空前有不定冠词a，表示职业“物理学家”，用physicist。 25. 【答案】 lied 【解析】 此处lie意为“撒谎”，根据yesterday可知时态为一般过去时，其过去式为lied。 【Part 2】提升练习: 根据括号里的短语提示，完成句子翻译。 1. It’s normal to get angry, but we need to learn how to deal with our emotions. 或Although it’s normal to get angry，we need to learn how to deal with our emotions.） 2. Li Ming moved to a new city last year. He lives alone, but he doesn’t feel lonely. 3. I have a sore throat, and the doctor advised me to drink more water. 4. Yesterday he said some hurtful words to me, but I know he didn’t do it on purpose. 5. When you are angry, try to control your anger instead of shouting at others. 6. We should learn to forgive others for their small mistakes and give them a second chance. 7. She is thankful for her family’s support during difficult times. 8. Even though the students were excited about the trip, they managed to behave themselves on the bus. 9. Instead of shutting herself away, she tried to face her problems bravely and ask for help. 10. Whenever you feel nervous before a speech, remember to take a deep breath and smile confidently. 11. Many students don’t dare to ask questions in class because they worry about making mistakes. 12. We should be proud of our Chinese culture and try our best to spread it around the world. 13. He realized he was wrong and decided to apologize to his neighbor for making so much noise. 14. It’s better to communicate openly than to keep silent and clear the air. 单元重点词汇变形&短语&固定搭配复习+练习 Unit 4 The Wonders of Nature 1.wonder n. 奇观；惊叹 →短语: natural wonders 自然奇观→ wonderful adj. 精彩的 2.measurement n. 数量；测量 → measure v. 测量；n. 措施 3.depth n. 深（度）；纵深 → deep adj. 深的；adv. 深深地 → deeply adv. 深深地; 深刻地; 深沉地 4.below prep.&adv. 在......下面 →短语: below sea level低于海平面 → above prep.& adv. 在......上方(反义词) 5.dive v. & n. 潜水；跳水；俯冲 → diver n. 潜水员；跳水运动员→ diving n. 潜水（运动）；跳水（运动）→短语: go diving 去潜水 6.unusual adj. 特别的；不寻常的 → usual adj. 通常的；平常的 → usually adv. 通常；平常 7.bottom n. 底部→短语: on the bottom of 在......底部 → top n.顶部(反义词) 8.civilization （=civilisation）n. 文明→ 短语: ancient civilization 古老文明 → civilize v. 使文明；使开化 9.development n. 发展；壮大 → develop v. 发展；开发 → developed adj. 发达的；成熟的 → developing adj. 发展中的 10.cubic adj. 立方的 →短语: cubic metres 立方米 → cube n. 立方体；立方 11.climber n. 攀登者；登山者 (字母b不发音)→ climb v. 攀登；攀爬 → climbing n. 攀登（运动）；登山（运动）→短语: go climbing 去爬山 12.distance n. 距离；遥远 →短语: in the distance 在远处 → distant adj. 遥远的；远处的 13.survive v. 生存；存活；艰难度过 →短语: survive from 从.....中存活→ survival n. 生存；存活 → survivor n. 幸存者；生还者 14.changeable adj. 可能变化的；易变的 →短语: changeable weather 多变的天气→ change v. 改变；变化；n. 变化；改变 15.death n. 死亡；毁灭；破灭 → die v. 死亡；消逝 → dead adj. 死的；无生命的 → deadly adj. 致命的；致死的 16.determined adj. 有决心的；坚决的 → determine v. 决定；确定 →搭配: determine to do sth. 决心做某事→ determination n. 决心；果断 17.successfully adv. 成功地；顺利地 → succeed v. 成功；达成 →搭配: succeed in doing sth. 成功做某事 → success n. 成功；成就 → successful adj. 成功的；有成效的 18.risk v. 使……冒风险（或面临危险）；n. 危险；风险 → risky adj. 有风险的；危险的 19.curiosity n. 好奇心；求知欲 → curious adj. 好奇的；求知欲强的→短语: be curious about 对......感到好奇 20.ambition n. 追求的目标；野心；雄心 →短语: be full of ambition 充满野心→ ambitious adj. 有雄心的；有野心的 21.explorer n. 探险者；勘探者 → explore v. 探索；勘探 → exploration n. 探索；勘探 22.simply adv. 仅仅；只；简单地 → simple adj. 简单的；单纯的 23.located adj. 位于；坐落在 →短语: be located in 坐落于; 位于→ locate v. 定位；位于 → location n. 位置；地点 24.attract v. 吸引；招引；引起（反应） → attraction n. 吸引力；景点→ attractive adj. 有吸引力的；迷人的 25.traveller （=traveler）n. 旅行者；游客 → travel v. 旅行；游历；n. 旅行 26.natural adj. 自然的；天然的；天生的 →短语: natural disasters 自然灾害→ nature n. 自然；天性 27.coast n. 海岸；海滨 → coastal adj. 沿海的；海岸的 →短语: the coastal areas海滨地区 28.sand n. 沙子→ sandy adj. 含沙的；沙质的 29.alive adj.活着; 在世; 有活力→ live /lɪv/ v.居住; 生存 /laɪv/ adj. 活的(=living,和dead是反义词); 现场直播的→ lively adj.充满活力的;生气勃勃的 【Part 1】基础练习: 结合语境，用所给词的适当形式填空。 1. The Great Wall is one of the greatest __________ in the world. Many tourists visit it every year. (wonder) 2. Before building the bridge, engineers need to __________ the width of the river accurately. (measurement) 3. The teacher tried to make her class as __________ as possible so that students wouldn't feel bored. (live) 4. With great __________, the climber finally reached the top of the mountain despite the bad weather. (determine) 5. My brother is a professional __________, and he often goes __________ in the Red Sea during holidays. (dive) 6. It’s __________ for him to get up so early on weekends, because he usually sleeps until 9 o'clock. (usual) 7. Many people are afraid of __________ because they think it means the end of everything. (die) 8. Ancient Egypt is famous for its rich __________, which attracts historians from all over the world. (civilize) 9. With the rapid __________ of technology, our lives are becoming more convenient than before. (develop) 10. The package is about 50 __________ meters in size, so we need a bigger box to hold it. (cube) 11. The old man is still __________ at the age of ninety-five, and he exercises every morning. (live) 12. Smoking is one of the most common causes of __________ diseases like lung cancer. (die) 13. The __________ of the earthquake were taken to a safe place and received help from the government. (survive) 14. The weather here is quite __________; it might rain this morning but be sunny this afternoon. (change) 15. My parents always tell me that I should __________ what I want to achieve in the future. (determination) 16. She __________ to study abroad when she was young, and her strong __________ helped her achieve that goal. (determine) 17. He __________ passed the driving test on his first try, which was a big __________ for him. (success) 18. --Do you know the boy __________ in the small village? --Yes, he is my cousin, and he loves the quiet life there. (live) 19. Children are naturally __________ about the world, and their __________ often leads them to ask many questions. (curious) 20. Her __________ is to become a scientist, and she works hard to achieve her __________ goals. (ambitious) 21. Marco Polo was a famous Italian __________ who traveled along the Silk Road to __________ China. (explore) 22. This math problem isn't difficult; you can solve it __________ if you think carefully. (simple) 23. The new museum is __________ in the center of the city, and its __________ makes it easy to find. (locate) 24. The beautiful scenery of the West Lake __________ millions of visitors every year, making it a top tourist __________. (attract) 25. Most __________ (travel)prefer to stay in __________ (coast)areas rather than in the mountains during summer holidays. 【Part 2】提升练习: 根据括号里的短语提示，完成句子翻译。 1.众所周知，桂林以其美丽的山水和许多自然奇观而闻名。(be famous for; natural wonders) ____________________________________________________________________________________________________________ 2.随着科技的发展，我们的日常生活正变得越来越便利。(development; convenient ) ____________________________________________________________________________________________________________ 3.尽管天气多变，登山者们仍然决定明天向山顶进发。(despite尽管; changeable) ____________________________________________________________________________________________________________ 4.我们应该采取措施保护那些濒临灭绝的动物，防止它们灭绝。(take measures to do sth.) ____________________________________________________________________________________________________________ 5.他对历史充满好奇，尤其是古埃及的文明。(be curious about) ____________________________________________________________________________________________________________ 6.长城是世界七大奇观之一，每年吸引成千上万的外国游客。(wonder; attract) ____________________________________________________________________________________________________________ 7.在老师的帮助下，玛丽成功解出了这道数学难题。(succeed in doing sth.) ____________________________________________________________________________________________________________ 8.这位年轻的歌手充满雄心，梦想着能在世界舞台上表演。(ambition; dream of) ____________________________________________________________________________________________________________ 9.西湖位于浙江省杭州市西部，并以优美的自然风光闻名。(be located in) ____________________________________________________________________________________________________________ 10.我的父母已决定搬到乡下，去过更安静的生活。(determine to do sth.) ____________________________________________________________________________________________________________ 参考答案 【Part 1】基础练习: 结合语境，用所给词的适当形式填空。 1.【答案】 wonders 【解析】此处有one of the greatest修饰，后面应接名词复数，表示“奇迹”，故填wonders。 2.【答案】 measure 【解析】need to后接动词原形，表示“测量”，故填measure。 3.【答案】 lively 【解析】as...as possible中间用形容词原级，表示“尽可能生动活泼的”，故填lively。 4.【答案】 determination 【解析】with great后接名词，表示“巨大的决心”，故填determination。 5.【答案】 diver; diving 【解析】第一空前面有a professional修饰，应填表示职业的名词diver“潜水员”；第二空go后接动名词表示从事某项活动，go diving“去潜水”，故填diver; diving。 6.【答案】 unusual 【解析】根据下文“他通常睡到9点”可知“周末早起对他来说是不寻常的”，故填unusual。 7.【答案】 death 【解析】of是介词，其后接名词作宾语，表示“死亡”，故填death。 8.【答案】 civilization 【解析】its是形容词性物主代词，其后接名词，表示“文明”，故填civilization。 9.【答案】 development 【解析】the rapid后接名词，表示“发展”，故填development。 10.【答案】 cubic 【解析】此处需要形容词修饰名词meters，表示“立方的”，故填cubic。 11.【答案】 alive 【解析】is后作表语，表示“活着的”，且位于系动词之后，故填alive。 12.【答案】 deadly 【解析】此处需要形容词修饰名词diseases，表示“致命的”，故填deadly。 13.【答案】 survivors 【解析】the后接名词，表示“幸存者”，由were可知主语为复数，故填survivors。 14.【答案】 changeable 【解析】quite修饰形容词，根据下文天气多变可知应填changeable“易变的，多变的”。 15.【答案】 determine 【解析】should是情态动词，其后接动词原形，表示“决定”，故填determine。 16.【答案】 determined; determination 【解析】第一空是固定搭配determine to do sth.“决心做某事”，由when从句可知用一般过去时determined；第二空her strong后接名词determination“决心”，故填determined; determination。 17.【答案】 successfully; success 【解析】第一空修饰动词passed，用副词successfully“成功地”；第二空a big后接名词success“成功”，故填successfully; success。 18.【答案】 living 【解析】此处需要非谓语动词作后置定语，the boy与live是主动关系，故用现在分词living。 19.【答案】 curious; curiosity 【解析】第一空are后作表语，用形容词curious“好奇的”；第二空their后接名词curiosity“好奇心”，故填curious; curiosity。 20.【答案】 ambition; ambitious 【解析】第一空her后接名词ambition“抱负，志向”；第二空修饰名词goals，用形容词ambitious“有雄心的”，故填ambition; ambitious。 21.【答案】 explorer; explore 【解析】第一空有Italian修饰，表示“探险家”，填explorer；第二空不定式to后接动词原形explore“探索”，故填explorer; explore。 22.【答案】 simply 【解析】此处修饰整个句子，表示“简单地，仅仅”，用副词simply。 23.【答案】 located; location 【解析】第一空是固定搭配be located in“位于”；第二空its后接名词location“位置”，故填located; location。 24.【答案】 attracts; attraction 【解析】第一空是谓语动词，主语scenery为单数，且描述客观事实用一般现在时attracts；第二空tourist后接名词attraction“景点”，故填attracts; attraction。 25.【答案】 travelers; coastal 【解析】第一空Most后接名词复数travelers“游客”；第二空修饰名词areas，用形容词coastal“沿海的”，故填travelers; coastal。 【Part 2】提升练习: 根据括号里的短语提示，完成句子翻译。 1. As we all know, Guilin is famous for its beautiful mountains and rivers and many natural wonders. 2. With the development of science and technology, our daily lives are becoming more and more convenient. 3. Despite the changeable weather, the climbers still decided to head for the top of the mountain tomorrow. 4. We should take measures to protect endangered animals and prevent them from dying out. 5. He is curious about history, especially the ancient civilization of Egypt. 6. The Great Wall is one of the seven wonders of the world and attracts thousands of foreign tourists every year. 7. With the help of her teacher, Mary succeeded in solving the difficult math problem. 8. The young singer is full of ambition and dreams of performing on the world stage. 9. West Lake is located in the west of Hangzhou, Zhejiang Province, and is famous for its beautiful natural scenery. 10. My parents have determined to move to the countryside to live a quieter life. 学科网（北京）股份有限公司 $