甘肃定西市2024-2025学年九年级上学期第二次诊断考试英语试题

( ………………○………………外………………○………………装………………○………………订………………○……………… 线 ………………○……………… ) ( ………………○………………内………………○………………装………………○………………订………………○……………… 线 ………………○……………… ) ( 此卷只装订 不密封 ) ( ………………○……………… 内 ………………○………………装………………○………………订………………○……………… 线 ………………○……………… ………………○………………外………………○………………装………………○………………订………………○……………… 线 ………………○……………… … 学校： ______________ 姓名： _____________ 班级： _______________ 考号： ______________________ ) 定西市2024-2025学年第一学期第二次诊断考试卷 九年级英语 听力部分（30分） Ⅰ.听力理解（每小题1分，共30分） 第一节：听句子，选择与所听内容相符的图片。每个句子读两遍。 A B C D E 1. 2. 3. 4. 5. 第二节：听句子，选择恰当的应答语。每个句子读两遍。 ( )6. A. Good idea. B. Light music is very relaxing. C. The music in this movie is great. ( )7. A. All right. B. My pleasure. C. Don’t say so. ( )8. A. Sounds great. B. Is it expensive? C. Sorry to hear that. ( )9. A. Have fun. B. Of course you can. C. Good luck! ( )10. A. Yes, I will. B. Sorry, I won’t. C. You’re right. 第三节：听对话及问题，选择能回答所提问题的最佳答案。每段对话读两遍。 ( )11. What does the boy want to buy? A. A hat. B. A coat. C. A dress. ( )12. How’s the weather now? A. Its sunny. B. It’s rainy. C. It’s cloudy. ( )13. Why didn’t Wang Tao sleep well last night? A. Because he played computer games. B. Because he watched a football match. C. Because he prepared for the chemistry exam. ( )14. What does the boy want to be in the future? A. A doctor. B. A scientist. C. A reporter. ( )15. Where does the conversation most probably take place? A. In a library. B. At a bookstore. C. In a museum. 第四节：听长对话，根据其内容选出能回答下列问题的最佳答案。每段对话读两遍。 听第一段对话，回答第16 至17 小题。 ( )16. What are they looking at? A. A map. B. A mountain. C. A lake. ( )17. How are they travelling? A. By plane. B. On foot. C. By car. 听第二段对话，回答第18至20小题。 ( )18. What color is John’s T-shirt? A. Pink. B. Blue. C. White. ( )19. Who will buy a T-shirt for Alan? A. John. B. Mary and John. C. Grace and John. ( )20. Where’s the clothes store? A. Behind the bank. B. Across from the police station. C. Between the bank and the police station. 第五节：听短文，根据其内容选择能回答下列问题的最佳答案。短文读两遍。 ( )21. What is Stephen Mills? A. A director. B. An artist. C. A tour guide. ( )22. When did Stephen arrive in India? A. On November 4th. B. On November 5th. C. On November 6th. ( )23. How long did Stephen spend in the south of the wildlife park? A. Ten days. B. Seven days. C. Three days. ( )24. What was the best part of the trip for Stephen? A. Riding an elephant. B. Feeding the tigers. C. Sleeping in a tent. ( )25. What will Stephen talk about next? A. The hotel. B. The food. C. The traffic. 第六节：听长对话，根据其内容填写下面表格中所缺的信息。对话读三遍。(每空限填一词) David’s Trip to Harbin How It was 26. . Time of arrival in Harbin On 27. 27th. Who taught David to skate His 28. . How long has David been skating For 29. years. David’s opinion on ice sports They are getting more 30. after the Beijing Winter Olympics. 笔试部分（90分） Ⅱ.单项选择（每小题1分，共20分） ( )1. — What 　　 interesting experiment! — Yes, 　　experiment is really amazing. A. a; the B. a; an C. an; / D. an; the ( )2. Can you give me some _________ on learning English? A.news B. secret C.advice D. suggestion ( )3. 　　 , the more you pay, the more you get. A. In fact B. In general C. By the way D. At times ( )4. When we 　　 an English song, some visitors came into our classroom. A. were singing B. sang C. are singing D. sing ( )5. My answer to the question is wrong. Can you tell me a(n) one. A. interesting B. active C. correct D. easy ( )6. I suggested_______ Five Springs Mountain Park (五泉山公园) this weekend. A. to visit B. will visit C. visit D. visiting ( )7. The duck in Picture ________ is among the chickens. ( )8. —Why are you late for school again, Bob? —Sorry, I failed to get up when my alarm . A. put off B. took off C. went off D. turned off ( )9. I think the third experiment ________ we did yesterday was fantastic. A. that B. who C. which D. whose ( )10．—Where is my umbrella? I put it here just now. —Maybe　　　　 took it by mistake. A. nobody B. anybody C. everybody D. somebody ( )11. Can you see the girl ________ outside the classroom? She is Miss Li's daughter. A.is standing B.standing C.stand D.to stand ( )12. _____ you practice every day, you won’t make any progress.. A. Although B. If C. Since D. Unless ( )13. Don’t study too late every night, or you may be tired out. Remember “________.” A. Don’t put all your eggs in one basket B. Practice makes perfect C. Don’t burn the candle at both ends D. No pain, no gain ( )14. You should get up early 　　 have enough time to exercise. A. so that B. in order to C. because of D. even if ( )15. The doctor looked over the woman carefully, but he couldn’t ____ what was wrong with her. A. look after B. look for C. find out D. find ( )16. Bob loves Mary very much. He wants to marry her. A. together D. to B. with C. / ( )17. —We can invite Nick and Tom to Shanghai Disneyland with us. — I’ll give them a call right. A. Why not? B. What for? C. Of course not. D. Not at all. ( )18.—Could you please pass that book to me? —__________! A. Me, too B. It’s my pleasure C. What a pity D. No problem ( )19. Computers have had a great influence on learning methods since they into schools. A. introduce B.introduced C.are introduced D.were introduced ( )20. Many people have cats. From the picture, we know that cats are __________ to most of them. A. pets B. friends C. family members D. toys Ⅲ.完形填空（每小题1.5分，共15分） Zeng Xiaomeng became blind a few months after she was born because of an illness. Years ago, she talked to her parents about her dream of learning to 1 . So they sent her to a special education school. It is not 2 for Zeng to learn songs. She needs to use Braille (盲文) to read the words of songs. She also needs to practice the songs repeatedly(反复地). 3 it usually takes her at least a month to learn a song, she never gives up. Zeng has a gift for music and learns faster than others at the school. Her music teacher 4 her. She posted a video of Zeng’s singing on the Internet. Zeng’s beautiful 5 has amazed and touched many people. They left messages praising her. “Thanks for 6 openness and encouragement. I will sing better and live better,” she replied to the messages. Music has brought great 7 to Zeng’s life and her personality. She felt much better about herself and got more 8 to communicate with others after learning music. At her teacher’s suggestion, she began to 9 her own singing videos online last year. With music in her heart, she becomes more 10 and wants to plant her feet in the field of music in the future. 阅读上面短文，从每小题所给的四个选项中，选出可以填入空白处的最佳答案。 ( )1. A. sing B. read C. dance D. play ( )2. A. bad B. wise C. easy D. difficult ( )3. A. Unless B. Because C. Until D. Although ( )4. A. is proud of B. is strict with C. is sorry for D. is good at ( )5. A. voice B. picture C. face D. smile ( )6. A. our B. your C. their D. my ( )7. A. problems B. examples C. troubles D. changes ( )8. A. duty B. courage C. luck D. information ( )9. A. copy B. watch C. share D. sell ( )10. A. active B. unhappy C. silent D. angry Ⅳ.阅读理解（每小题2分，共20分） A The traditional Chinese lunar calendar(阴历) divides the year into twenty-four solar terms(节气). Major Snow (大雪) is the 21st solar term of the year. Here are three things you should know about Major Snow. Snowy winter The snow in North China may last a whole day, covering the ground and blocking the road. In the south, snow falls and the world turns white. There is a saying about the snow, “A timely snow promises a good harvest”. Admiring plum blossoms (梅花) Plum blossoms usually bloom(开花) in mid-to-late December in some southern cities of China, and sometimes bloom even earlier. The plum blossom, which came from China, is honored in Chinese culture for its resilience during cold winters. With the pine (松树) and bamboo, it is regarded as one of the Three Friends of Winter. Eating porridge (粥) Hot porridge can help warm you and make your body healthy in cold weather. In China, it’s traditional to eat red bean porridge on the first day of Major Snow and eight-reasure porridge on the eighth day of the last month of the lunar year. 阅读上面的短文，根据其内容判读下列句子正误。正确填A、错误填B。 ( )1. There are 21 solar terms in the traditional lunar calendar. ( )2. “A timely snow promises a good harvest” is an old saying about the weather. ( )3. The plum blossom is considered to be one of the Three Friends of Winter. ( )4. Eating hot porridge is traditional and healthy on Major Snow. ( )5. Maybe we read this passage in the column(专栏) of weather. B Technologies Making School Life“SMART” E-books In the future, students may only bring e-books to school. In fact, some schools are already doing this. E-books can store notes and students feel relaxed with lighter schoolbags. Robot teachers There are robot teachers in the schools in some cities. These robots can help students with their studies. They can also help them solve problems. E-skates With a pair of e-skates, you can walk to school faster! E-skates can be tied to your shoes easily. And there are four speed settings you can choose. Flying aids If students get hurt and need help at schools, drones(无人机) can be of great use. They can offer help faster than people and they can also carry medicine or clothes. 阅读上面的短文，根据其内容选择正确答案。 ( )6. How many technologies are mentioned in the passage? A.One B.Two C.Three D.Four ( )7. How do students feel with lighter school-bags? A. Worried. B. Relaxed. C. Bored. D. Surprised. ( )8. What does the underlined word“this” refer to? A. Allowing students to only bring e-books to school. B. The e-book. C. Going to school without any books. D. Giving students light schoolbags. ( )9. Who can help students with their studies according to the passage? A. The friends. B. The drones C. The workers. D. The robot teachers. ( )10.What is the theme of the passage? A. Nature. B. Education. C. Technology. D.Culture. Ⅴ.补全对话（每小题1分，共5分） 根据对话内容，选择适当的句子补全对话。其中有两项是多余的。 (Lucy and Bob are talking about School Science Show. “L ”is for Lucy. “B ”is for Bo B. ) B: Lucy, are you going to the School Science Show? L:1. When does it start? B: I saw the poster yesterday. 2. It will last two days. L: Oh, July 5th and 6th.3._______ B: Yes. And this time it will be open from 10:00 a.m. to 6: 00 p. m.. L: That sounds good. It will give more people the chance to enjoy it.4.______ B: Only 2 for students, but adults should pay 10. L: Great! It’s much better than before. B: The poster also says there are many new inventions to watch and try this time. L:5. I won’t miss it! A. It’s the first weekend of July. C. How much are the ticket? E. Does it last two days? G. Yes, I plan to. B. It must be very exciting. D. How much should I pay? F. It says the show starts on July 5th. Ⅵ.词汇考查（共10分） 1. If you eat too much chocolate, you will get (fat) than before. 2. It’s said that two (three) of the water around the world is polluted. 3. With the (develop) of tourism, there are many visitors in Gansu. 4. Danny is (lie) in the bed with a bad cold. 5. I can’t make a fire without (match). 6. Many students get (interest) in performing after the Film and Theater Festival in our school. 7. Animals are our friends, so (protect)them is our duty. 8. Why not (clean) up your room at once? 9. My sister dreamed to be an (act) when she was at the age of ten. 10. We can’t wait (watch) the movie, for it’s nice and enjoyable. Ⅶ.完成句子（每空1分，共10分） 1. 请用一张硬纸板盖住瓶口。 Please the top of the jar a cardboard. 2. 他们什么时候动身去上海？ When will they Shanghai? 3. 请别生我的气，这不是我的错。 Please don’t be me. It wasn’t my fault. 4. 这部新电影将在什么时候上映呢？ When will the new movie be ? 5. Tony拉上被子盖住头，但他睡不着。 Tony pulled the quilt to cover his head, but he couldn’t . Ⅷ.书面表达（共10分） 健康一直是人们关注的话题，为此，国家积极倡导全民健身，关注健康，关爱生命。定西市各中小学积极开展“阳光体育运动(Sunny Sports)”，口号是“每天锻炼一小时，健康工作五十年，幸福生活一辈子”。假如你是定西市公园路中学的一名学生，请根据下面的提示写一篇短文谈谈你的看法和建议。 提示：1. 保持健康的重要意义； 2. 简要描述向往中学的阳光体育运动； 3. 保持健康的建议和方法（锻炼、饮食等）。 注意：1. 不少于80词； 2. 首句已给出，不计入总词数。 Health is the most important of all. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________________ 试题 第3页（共12页） 试题 第4页（共12页） 试题 第1页（共12页） 试题 第2页（共12页） 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$………………○………………外………………○………………装………………○………………订………………○………………线………………○……………… ………………○………………内………………○………………装………………○………………订………………○………………线………………○……………… 此卷只装订不密封 定西市2024-2025学年第一学期第二次诊断考试卷 九年级英语参考答案 Ⅰ.听力理解（每小题1分，共30分） 题号 1 2 3 4 5 6 7 8 9 10 11 12 13 答案 B C E D A A B C C B A B C 题号 14 15 16 17 18 19 20 21 22 23 24 25 答案 B A A C A B C B C B A B 26. amazing 27. January 28. father 29. Eight/8 30. popular Ⅱ.单项选择（每小题1分，共20分） 题号 1 2 3 4 5 6 7 8 9 10 答案 D C B A C D A C A D 题号 11 12 13 14 15 16 17 18 19 20 答案 C D C B C C A D D C Ⅲ.完形填空（每小题1.5分，共15分） 题号 1 2 3 4 5 6 7 8 9 10 答案 A C D A A B D B C A 本文主要介绍了一个盲人女孩追逐音乐梦想的故事。 1．【答案】A 【解析】句意：几年前，她向父母讲述了她学习唱歌的梦想。 sing唱歌；read阅读；dance跳舞；play玩。根据后文“learn songs.”可知，学唱歌，故选A。 2．【答案】C 【解析】句意：曾学歌并不容易。 bad坏的；wise明智的；easy容易的；difficult 困难的。根据“She needs to use Braille (盲文) to read the words of songs. She also needs to practice the songs repeatedly.”可知，她需要用盲文来读歌词，她还需要反复练习这些歌曲，所以曾学歌并不容易。故选C。 3．【答案】D 【解析】句意：虽然她通常要花至少一个月的时间来学习一首歌，但她从不放弃。 Unless除非；Because因为；Until 直到；Although虽然。前后两句构成让步关系，用Although连接，故选D。 4．【答案】A 【解析】句意：她的音乐老师为她感到骄傲。 proud of骄傲；strict with严格；sorry for抱歉； good with擅长。根据“Zeng has a gift for music and learns faster than others at the school.”可知，她很有天赋，所以老师为她感到骄傲。故选A。 5．【答案】A 【解析】句意：曾优美的嗓音让很多人惊叹和感动。 voice嗓音；picture图片；face脸；smile微笑。根据“Zeng’s beautiful...has amazed and touched many people.”可知，她唱歌，所以是嗓音让很多人惊叹和感动。故选A。 6．【答案】B 【解析】句意：谢谢你们的坦诚和鼓励。 our我们的；your你们的；their他们的；my我的。根据“she replied to the messages”可知，对网友们说的，所以是“你们的”，故选B。 7．【答案】D 【解析】句意：音乐给曾的生活和性格带来了巨大的变化。 problems问题；changes变化；examples例子；troubles麻烦。根据“Music has brought great...to Zeng’s life and her personality.”可知，音乐给她带来了巨大的变化。故选D。 8．【答案】B 【解析】句意：学习音乐后，她的自我感觉更好了，也更有勇气与人交流。 duty职责；courage勇气；luck运气；information信息。根据“She felt much better about herself and got more...to communicate with others after learning music.”可知，她更有勇气与人交流。故选B。 9．【答案】C 【解析】句意：在老师的建议下，她去年开始在网上分享自己的唱歌视频。 copy抄袭；watch观看；share分享；sell卖。根据“she began to...her own singing videos online”可知，她在网上分享自己的唱歌视频，故选C。 10．【答案】A 【解析】句意：心中有了音乐，她变得更加积极，想要在未来的音乐领域站稳脚跟。 active积极的；upset沮丧的；silent寂静的；angry生气的。根据“With music in her heart, she becomes more...and wants to plant her feet in the field of music in the future.”可知，心中有了音乐，她变得更加积极，故选A。 Ⅳ.阅读理解（每小题2分，共20分） 题号 1 2 3 4 5 6 7 8 9 10 答案 B B A A B D B A D C (A)【文章大意】这篇文章主要介绍了二十四节气中的大雪。这是第21个节气， 在这个节气的时候， 通常会下雪。梅花通常也会在这个时期开， 在“大雪”的第一天，人们会喝腊八粥粥等。 1.【答案】B 【解析】题干意为： 在中国传统的农历有21个节气。根据文章第一段第一句The traditional Chinese lunar calendar divides the year into twenty-four solar terms.可知,本句错误，故答案为B。 2.【答案】B 【解析】题干意为：“瑞雪兆丰年”是一个关于季节的古老谚语。根据第一个表格中的There is a saying about the snow, “A timely snow promises a good harvest”.可知，本句错误， 故答案为B。 3.【答案】A 【解析】题干意为： 梅花被认为是“岁寒三友”之一。根据第二个表格中的The plum blossom, which came from China, is honored in Chinese culture for its resilience during cold winters. With the pine and bamboo, it is regarded as one of the Three Friends of Winter.可知，本句正确，故答案为A。 3.【答案】A 【解析】题干意为： 在“大雪”这一天，喝腊八粥是传统的、健康的。根据第三个表格中的Hot porridge can help warm you and make your body healthy in cold weather. In China, it’s traditional to eat red bean porridge on the first day of Major Snow可知，本句正确，故答案为A。 5.【答案】B 【解析】题干意为： 也许你可以在天气专栏读到这篇文章。通读全文可知，这篇文章主要介绍了二十四节气中的大雪。本句错误，故答案为B。 (B)【文章大意】这篇文章主要介绍了使学校生活智能化的四种科技。 6.【答案】D 【解析】细节理解题。根据: E-books, Robot teachers, E-skates和 Flying aids, 可知, 文章中提到了4项技术.故选D。 7. 【答案】B 【解析】细节理解题。根据第二个表格右侧E-books can store notes and students feel relaxed with lighter schoolbags.可知, 学生用较轻的书包感觉放松。故选B。 8.【答案】A 【解析】细节理解题。根据第一个表格右侧In the future, students may only bring e-books to school. In fact, some schools are already doing this.可知,this 指的是允许学生只带电子书去学校。故选A。 9.【答案】D 【解析】细节理解题。根据第二个表格右侧 There are robot teachers in the schools in some cities. These robots can help students with their studies.可知 ,机器人老师能帮助学生学习。故选D。 (4) 【答案】C 【解析】主题理解题。通过标题Technologies Making School Life“SMART”及全文可知,这 篇文章主要介绍了使学校生活智能化的四种科技。故选C。 Ⅴ.补全对话（每小题1分，共5分） 根据对话内容，选择适当的句子补全对话。其中有两项是多余的。 题号 1 2 3 4 5 答案 G F A C B 【解析】 试题分析：这篇短文中的两个人(Lucy and Bob)主要谈到了七月五日和六日的科学展。通过对话可知, 这次展出是在七月的第一个周末, 在上午十点到下午六点之间, 票价是两美元一张。 1.根据上文,根据“露西,你打算去看学校科学展吗?”可知选G,“是的,我计划去”。 2.联系前文, “我昨天看见了海报”及下文“它会持续两天”，可知选F, 上面说, 这次展出在七月五日开始。 3.联系前文, 根据“哦,七月五日和六日”可知选A, 是七月的第一个周末。 4.联系下文, 根据“每个学生只要两美元”可知选C,多少钱一张票? 5.联系上文描述，,根据下文答语“我不会错过的”，可知前文表示对上文的肯定, 故选B, “一定非常令人兴奋”。 Ⅵ.词汇考查（共10分） 1. fatter 2. thirds 3. development 4. lying 5.matches 6. interested 7.protecting 8. clean 9. actress 10. to watch Ⅶ.完成句子（每空1分，共10分） 1. cover; with 2. leave for 3. angry with/ mad at 4. put on 5.fall asleep Ⅷ.书面表达（共10分） Health is the most important of all. Keeping healthy can make us active and happy. In order to encourage people exercise, our government holds the Sunny Sports throughout the country. In our school, all students should do outdoor activities for at least one hour a day. We run, jump on the playground, play ball games and do different kinds of sports together. All of us like sports. Here are some good ways for you to keep healthy. First, take an active part in different kinds of sports. Second, make sure you have a balanced diet and eat more fruits and vegetables. Then, don’t eat too much junk food and drink water often. In a word, health comes first. We should try our best to keep healthy. 听力录音材料 第一节：听句子，选择与所听内容相符的图片。每个句子读两遍。 1. My grandparents preferred to live in the countryside. 2. There is a clock on the wall in my bedroom. 3. Would you like to watch the dragon boat race with me? 4. Enough exercise can help us keep healthy. 5. African elephants are the largest land animals on Earth. 第二节：听句子，选择恰当的应答语。每个句子读两遍。 6. What about listening to light music? 7. It’s so kind of you to help me with my Chinese. 8. I lost my new watch yesterday. 9. I’ll take part in a writing competition tomorrow. 10. Don’t eat in class, Tim. 第三节：听对话及问题，选择能回答所提问题的最佳答案。每段对话读两遍。 11. W: Can I help you? M: Yes, I want to buy a hat for my mother as a gift. Question: What does the boy want to buy? 12. W: It is raining outside, but I don't have an umbrella. M: Don’t worry. I can share my umbrella with you. Question: How's the weather now? 13. W: You look so tired, Wang Tao. Didn't you have a good sleep? M: No, I got ready for the chemistry exam last night. Question: Why didn't Wang Tao sleep well last night? 14. W: I want to be a doctor in the future. What about you? M: Well, I want to be a scientist because I want to invent more useful things. Question: What does the boy want to be in the future? 15. M: Excuse me, could you please tell me how long I can keep theses books? W: You can keep these two for two weeks and this one for four months. Question: Where does the conversation most probably take place? 第四节：听长对话，根据其内容选出能回答下列问题的最佳答案。每段对话读两遍。 听第一段对话，回答第16至17 小题。 M:Look at the map. I think we’re just here. W: No, we’re not. There aren't any mountains around here. M: But we passed the lake only two minutes ago. W: You were driving so fast that I didn’t see it. I think we’re lost. M: Don't worry. Let's use the phone to find the way. 听第二段对话，回答第18至20小题。 W: Hey, John! You look very cool in this pink T-shirt. M: Thank you, Mary. My aunt Grace bought it for me. W: I want to buy one for my brother Alan but I can't afford it. His birthday is on Thursday. M:Why don’t we buy a T-shirt together for Alan? W: That sounds good. Where did your aunt get this T-shirt? M: In Long Clothes Store. It’s between the bank and the police station on Friendship Street. W: It’s not far from here. Let's just walk there. 第五节：听短文，根据其内容选择能回答下列问题的最佳答案。短文读两遍。 Hi there, I’m Stephen Mills. Look, this is my new work, a painting of an Indian tiger. In order to take a close look at the tigers, I took the Tiger Tour to India last year and took many photos. You know, photos are useful for an artist. I arrived in India on the 6th of November. It took me ten days to visit the wildlife park: three days in the north of the park, where I traveled around in an open truck; the rest of the time in the south, where I traveled around on an elephant. Yeah, an elephant! Actually, it was the best part of the trip. It’s not allowed to feed the tigers or the elephants although I really wanted to do that. Ah... I didn’t have to sleep in a tent during the trip. The hotel I stayed in was comfortable. As for eating, ugh! Sorry, I… 第六节：听长对话，根据其内容填写下面表格中所缺的信息。对话读三遍。(每空限填一词) W: Hi, David. How was your trip to Harbin? M: It was amazing. I felt like I was in an ice and snow world. W: Wow! When did you get there? M: I got there on January 27th. W: What did you do in Harbin? M: I went skating there. It was very exciting and interesting. W: Who taught you to skate? M: My father. He took me to go skating when I was only five years old. W: How long have you been skating? M: I’ve been skating for eight years. W: That’s great! What do you think of ice sports in recent years? M: I think they are getting more popular after the Beijing Winter Olympics. W: That’s true. I'm really proud of our great country. M: Me, too! 试题 第3页（共12页） 试题 第4页（共12页） 1 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$null