专题14 名词性从句40题（真题+模拟题）-河北省2026年对口升学一轮复习《英语知识点清单》（原卷版+解析版）

编写说明：河北省2026年对口升学一轮复习《英语知识点清单》，依据《中等职业学校英语课程标准》（2020年版）及历年高考真题进行编写。本资料将高考必备知识进行科学划分，系统总结归纳知识点，全面梳理高考题型。本清单共两部分：第一部分是按照基础语法知识点编写的语法知识清单，第二部分是依据各个高考题型编写的题型技巧清单。每份资料均配备配套讲义、课件和练习题。 本专题是河北省2026年对口升学一轮复习《英语知识点清单》中语法知识清单的第14个专题，内容为名词性从句。 2026年河北省对口升学一轮复习 英语语法知识清单 专题14 名词性从句（真题+模拟题） 【考点解读】 考点 内容解读 河北省近五年对口升学考试统计(题号) 2019年 2020年 2021年 2022年 2023年 2024年 2025年样卷 名词性从句 主语从句 — (22) (11) (24) — (22) 宾语从句 — (24) — (23) — (27) 表语从句 — (23) — (26) (23)(29) (19) 同位语从句 (29) — — — — — — 从河北省近几年对口升学考试情况统计来看，对名词性从句的考查主要集中在主语从句、宾语从句、表语从句和 that引导的同位语从句上。要求学生准确、熟练地运用名词性从句的关联词并掌握名词性从句的语序问题。主要出现在单选里。 【名词性从句·高考真题分类通关】 【考点一：主语从句的用法】 1.(2022年河北省对口升学考试试题) ____ money doesn't grow on trees should be obvious to everyone in the world. A. What B. Whether C. Which D. That 【答案】D 【详解】本题考查主语从句。句义：“金钱不能从树上长出来，这对世界上每个人都是显而易见的。”主语从句中不缺成分，所以用 that引导。 2. (2021年河北省对口升学考试试题) he does it will have an effect on the result. A. What B. How C. Which D. As 【答案】B 【详解】本题考查主语从句。主语从句中缺少方式状语，所以用 how。 3.(2020年河北省对口升学考试试题) I can arrive there on time is not known. A. If B. What C. Whether D. That 【答案】C 【详解】本题考查主语从句。根据句义可知主语从句具有疑问语气，if不能引导主语从句，只能用 whether 引导。 4.(2020年河北省对口升学考试试题) Tommy didn't work hard. That is he failed to finish the task. A. what B. why C. when D. that 【答案】B 【详解】本题考查表语从句。why表示“⋯⋯的原因”，引导表语从句，其内容为结果。 5.(2020年河北省对口升学考试试题) Our teacher told us that sound much more slowly than light. A. has traveled B. traveled C. travel D. travels 【答案】D 【详解】 本题考查宾语从句中的时态。“声音比光传播慢得多”为宾语从句的内容，并且表示客观真理，因此从句时态应为一般现在时。又因 sound在句中为不可数名词，所以从句谓语动词应用第三人称单数形式。 【考点二：宾语从句的用法】 6.(2024年河北省对口升学考试试题) As we all know, eating makes us _ we are now. A. that B. when C. what D. which 【答案】C 【详解】分析句子结构：“As we all know”是插入语，“eating makes us _ we are now”是句子的主体部分。“_ we are now”是一个宾语从句，作“makes”的宾语补足语，补充说明使我们成为什么样的状态。 确定宾语从句引导词：宾语从句中“are”后面缺少表语，需要一个连接代词来充当表语。“that”在宾语从句中不充当成分，不符合；“when”在宾语从句中作时间状语，不符合；“which”表示“哪一个”，在从句中有选择含义，此处不符合；“what”可以在宾语从句中充当主语、宾语或表语，在此处表示“使我们成为我们现在的样子”，符合要求，所以选C。 7.(2023年河北省对口升学考试试题) As a friend of yours, I want to tell you I heard. A. who B./ C. what D. that 【答案】C 【详解】本题考查宾语从句。句中“tell you”后面是宾语从句，宾语从句中“I heard”后面缺少指物的宾语，故用 what。 8.(2022年河北省对口升学考试试题)I wonder me about. A. what is he writing to B. what he is writing to C. that is he writing to D. that he is writing to 【答案】B 【详解】 本题考查宾语从句。句义：“我想知道他给我写的信是关于什么的。”宾语从句中介词 about 后缺少宾语，所以用 what 引导。宾语从句用陈述语序。 9.(2020年河北省对口升学考试试题) Our teacher told us that sound much more slowly than light. A. has traveled B. traveled C. travel D. travels 【答案】D 【详解】 本题考查宾语从句中的时态。“声音比光传播慢得多”为宾语从句的内容，并且表示客观真理，因此从句时态应为一般现在时。又因 sound在句中为不可数名词，所以从句谓语动词应用第三人称单数形式。 【考点三：表语从句的用法】 10.(2022年河北省对口升学考试试题) That was she did this morning in the bath room. A. that B. why C. what D. whether 【答案】C 【详解】 本题考查表语从句。句义：“那就是她今天早晨在浴室干的事。”表语从句中 did后缺宾语，所以用 what引导。 11.(2020年河北省对口升学考试试题) Tommy didn't work hard. That is he failed to finish the task. A. what B. why C. when D. that 【答案】B 【详解】本题考查表语从句。why表示“⋯⋯的原因”，引导表语从句，其内容为结果。 12. (2025年河北省对口升学考试试题样卷)With cows eating grass leisurely in the field, it seemed _ time had stood still here. A. that B. what C. when D. how 【答案】A 【详解】分析句子结构：“With cows eating grass leisurely in the field”是 with 的复合结构作状语，表示“奶牛在田野里悠闲地吃草”这种伴随情况。“it seemed _ time had stood still here”是主句部分，其中“it”是形式主语，真正的主语是后面的从句。确定从句类型及引导词：“time had stood still here”（时间在这里仿佛静止了）是一个完整的句子，不缺少任何成分。在这种情况下，引导表语从句（seem 是系动词，其后从句为表语从句 ）且不充当从句成分的引导词就是“that”。“what”在从句中要充当主语、宾语或表语等成分；“when”表示时间，在从句中作时间状语；“how”表示方式，在从句中作方式状语，这三个词在此处均不符合要求，所以选A。 【考点四：同位语从句的用法】 近几年，没有考查同位语从句。 【名词性从句·全真模拟题分类通关】 【考点一：主语从句的用法】 13． ______ is known to us that the earth runs around the sun. A．What B．As C．It D．Which 【答案】C 【详解】考查it作形式主语。句意：众所周知，地球围着太阳转。It在句中作形式主语，真正的主语为“that the earth runs around the sun”。故选A项。 14．________ he does it will have an effect on the result. A．What B．How C．Which D．As 【答案】B 【详解】考查主语从句。句意：他怎么做会影响到结果。分析句子结构可知，“he does it”是主语从句，句子成分完整，因此应使用副词“How”作状语，表示“做事的方式”。故选B。 15．_______ money doesn’t grow on trees should be obvious to everyone in the world. A．What B．Whether C．Which D．That 【答案】D 【详解】考查主语从句。句意：钱不是长在树上，这对世界上的每一个人都是显而易见的。分析句子结构可知，从句...money doesn’t grow on trees是主语从句，从句的句子成分及意义已经完整，应用that引导。故选D。 16．________ the director wants to express in the movie is the love of home land. A．What B．Where C．When D．Why 【答案】A 【详解】考查主语从句。句意：导演想在电影中表达的是对家乡的热爱。A. What……的事物；B. Where在哪；C. When什么时候；D. Why为什么。分析句子可知，该句为包含主语从句的主从复合句，设空处考查主语从句的引导词，且从句中的及物动词express“表达”后缺少宾语，此处应用连接代词what引导主语从句。故选A。 17． ________ he means is “Do you want coffee with your meal or later?” A．Which B．What C．That D．Whatever 【答案】B 【详解】考查主语从句。句意：他的意思是“你想在就餐时喝咖啡还是稍后再喝？”分析句子可知，“...he means”是主语从句，从句缺means的宾语，用what引导主语从句。故选B。 18．______ he does has nothing to do with me. A．That B．Who C．What D．If 【答案】C 【详解】考查名词性从句。句意：他所做的与我无关。句中what引导主语从句，既充当引导词又充当从句中does后面的宾语，对事物提问。故选C项。 19．______ I want to know is how the kid managed to escape the fire. A．That B．What C．Who D．Which 【答案】B 【详解】考查主语从句的连接词。句意：我想知道的是那孩子是怎么逃出火场的。A. That那个；B. What什么；C. Who谁；D. Which哪一个。由题干可知，这里考查的是主语从句的连接词，并且充当从句的主语，表示“事情”，用“What”。故选B项。 20．________ is none of our business. A．If Joe succeeds or fails B．Whether Joe will succeed or fail C．Whether will Joe succeed or fail D．That Joe will succeed or fail 【答案】B 【详解】考查主语从句。句意：乔是成功还是失败与我们无关。分析句子结构可知，此处缺主语从句。if“是否”不能引导放于句首的主语从句；whether引导主语从句，意为“是否”；that引导主语从句时无实际意义；主语从句应用陈述句语序，即从属连词+主语+谓语。根据“... is none of our business”可知，是指乔是成功还是失败与我们无关，此处应用“Whether Joe will succeed or fail”。故选B。 21．________ comes in must keep quiet. A．Whatever B．Whenever C．However D．Whoever 【答案】D 【详解】考查名词性从句。句意：任何人进来都必须保持安静。A. Whatever无论什么，任何事物；B. Whenever无论何时；C. However无论如何；D. Whoever无论谁，任何人。分析句子结构可知，“... comes in”是主语从句，空处需用连接代词引导该从句，并在从句中作主语。根据“comes in (进来)”和“keep quiet (保持安静)”可知，此处表示“任何人进来都必须保持安静”，指人，D选项符合题意。故选D。 22．It doesn’t matter ________ you pay in cash or through WeChat in this store. A．if B．that C．whether D．how 【答案】C 【详解】考查主语从句。句意：在这个商店里，你用现金支付还是通过微信支付都无所谓。本题中it作形式主语，真正的主语是后面的从句。根据“you pay in cash or through WeChat”可知，此处应是“whether … or”的固定搭配，意为“无论……还是”。故选C。 23．________ he is employed by Hua Wei company is known to everyone. A．What B．Which C．That D．/ 【答案】C 【详解】考查主语从句。句意：众所周知，他被华为公司聘用。分析句子结构可知，“... he is employed by Hua Wei company ”是一个主语从句，从句成分句意完整，表确定的事实，要用连接词that引导主语从句，不可省略。故选C。 24．________ he told me is a true story. A．That B．What C．How D．Whether 【答案】B 【详解】考查主语从句。句意：他告诉我的是一个真实的故事。“…  he told me”为主语从句，从句缺少宾语，故用连接代词“what”引导从句，同时在从句中作“told”的宾语，意思是“他告诉我的（事情）”。故选B。 【考点二：宾语从句的用法】 25．I want to know ______ to learn English. A．when did he begin B．when he began C．he when began D．when he begins 【答案】B 【详解】考查宾语从句。句意：我想知道他什么时候开始学英语的。分析句子可知，此处为宾语从句，应用陈述句语序；根据句意可知，是我现在想知道你过去什么时候开始学英语的，故用一般过去时。故选B。 26．Your coat is so nice. Could you tell me ______? A．where have you bought it B．where do you buy it C．where you bought it D．where did you buy it 【答案】C 【详解】考查宾语从句。句意：你的外套真好看。你能告诉我你在哪里买的吗？分析句子可知，此句为宾语从句，宾语从句用陈述语序。故选C。 27．—I saw David in the teachers’ office this morning. Do you know ______ he was there? —He went there to hand in his homework. A．how B．whether C．when D．why 【答案】D 【详解】考查宾语从句。句意：—今天早上我在老师办公室见到了大卫。你知道他为什么在那里吗？—他去那里交作业。根据答语“He went there to hand in his homework. (他去那里交作业。)”可知，此处应为询问大卫去办公室的原因，引导词用why。故选D。 28．Our teacher told us that sound ________ much more slowly than light. A．has traveled B．traveled C．travel D．travels 【答案】D 【详解】考查宾语从句和时态。句意：我们的老师告诉我们声音比光传播得慢得多。分析句子可知，that后面引导的是宾语从句，当宾语从句表述的是客观真理或自然现象时，用一般现在时；从句主语是sound，谓语动词用其三单形式travels。故选D。 29．The teacher told the students that ________ four seasons in a year. A．there are B．there is C．there was D．there were 【答案】A 【详解】考查主谓一致、一般现在时及宾语从句。句意：老师告诉学生，一年有四个季节。分析句子可知，“that ... four seasons in a year.”为宾语从句，在宾语从句中，时态的使用通常要根据主句的时态来决定，但当宾语从句所表达的内容是客观真理、客观事实或自然现象等时，无论主句是什么时态，宾语从句都要用一般现在时。在这个句子中，“一年有四个季节”是一个客观存在的事实，是不会随着时间改变的，故从句用一般现在时，“four seasons”是复数概念，所以要用“there are”。故选A。 30．Can you make sure ________ the gold ring? A．where Alice had put B．where had Alice put C．where Alice has put D．where has Alice put 【答案】C 【详解】考查宾语从句。句意：你能确定爱丽丝把金戒指放在哪里了吗？分析句子结构可知，“... the gold ring”为宾语从句，宾语从句应使用陈述句语序，即“从属连词+主语+谓语”；根据“Can you make sure ... the gold ring?”可知，是指“你能确定爱丽丝把金戒指放在哪里了吗？”，强调的是过去放戒指这个动作对现在（能否确定位置）的影响，宾语从句的时态应为现在完成时，即谓语动词用have/has+过去分词。故选C。 31．There is no use asking ________ fault it is. What we should do is to solve the problem. A．who B．whose C．what D．which 【答案】B 【详解】考查宾语从句。句意：问这是谁的错没有用。我们应该做的是解决问题。分析句子可知，“... fault is”是宾语从句，作动词“asking”的宾语；宾语从句缺定语，修饰名词“fault”；根据句意可知，此处侧重于询问所属关系，即“谁的”，强调过错的所有者，连接代词whose符合语境。故选B。 32．To know ________ the mountain top looks like, you need to reach it. A．what B．when C．where D．which 【答案】A 【详解】考查宾语从句。句意：要想知道山顶是什么样子，你需要到达它。A. what什么；B. when什么时候；C. where哪里；D. which哪一个。根据句意可知，此处指想知道山顶是什么样子，应用what引导宾语从句。故选A。 【考点三：表语从句的用法】 33．That is _________ I was late on Sunday. A．why B．when C．what D．where 【答案】A 【详解】考查表语从句连接词辨析。句意：这就是我星期天迟到的原因。A. why为什么；B. when何时；C. what什么；D. where何地。分析句子结构可知，这是一个表语从句，用来解释“我周日迟到的原因”，“ why”引导名从时，可译为“……的原因”。故选A。 34．China is no longer ________. A．what it was used to being B．what it used to be C．what it used to being D．what it was used to be 【答案】B 【详解】考查表语从句和固定搭配。句意：中国不再是过去的中国了。“be used to doing”表示“习惯于……”；“used to do”，表示“过去常常做……”；used to doing (错误表达)；“be used to do”，表示“被用来去做……”。分析句子可知，空处是表语从句，是强调中国现在与过去进行对比，“中国不再是过去的样子了”，应用“what it used to be”，意为“中国过去的样子”。故选B。 35．The reason why I didn’t go to Shanghai was ________ a new job. A．because I had found B．because of I having found C．I had found D．that I had found 【答案】D 【详解】考查表语从句。句意：我没去上海的原因是我找到了一份新工作。根据“The reason why I didn’t go to Shanghai was ...”可知，空处为表语从句，当主语是The reason时，通常用that引导表语从句来具体说明原因的内容，that在这里起到连接作用，且不能省略，以保持句子结构的完整性和表意的准确性。故选D。 36．That was _______ she did this morning in the bathroom. A．that B．why C．what D．whether 【答案】C 【详解】考查表语从句连接词的辨析。句意：那就是今天早上她在浴室做所做的。A. that无词义（只起连接作用，不充当任何成分）；B. why为什么（作原因状语）；C. what什么（作主宾表定）；D. whether是否（只起连接作用，不充当任何成分）。分析句子结构可知，这是一个表语从句。表语从句的谓语动词是“did (做，及物动词)”，其后缺宾语，要用一个能作宾语的连接词“what”来引导表语从句。故选C。 【考点四：同位语从句的用法】 37．______ is no possibility ______ Bob can win the first prize in the match. A．It; that B．There; that C．There; whether D．It; whether 【答案】B 【详解】考查there be句型和同位语从句。句意：鲍勃在比赛中获得一等奖是毫无可能的。there be句型：There is no possibility that没有……的可能性；后面的同位语从句that Bob will win the first prize in the match解释名词possibility的内容。故选B。 38．Along with the letter was his promise ________ he would visit me this coming Christmas. A．which B．that C．what D．whether 【答案】B 【详解】考查同位语从句。句意：随同他的信而来的是他的诺言，他会在即将到来的圣诞节来看我。分析句子可知，“________ he would visit me this coming Christmas”为同位语从句，对promise的内容解释，从句不缺少成分也不缺少意思，用that引导同位语从句，只起连接作用，故选B。 39．Do you agree with his idea ________ we set off tomorrow? A．/ B．which C．that D．about which 【答案】C 【详解】考查同位语从句。句意：你同意他说我们明天出发的想法吗？分析句子结构可知，句中“we set off tomorrow”是一个完整的句子结构，它是用来解释说明“his idea”的具体内容的，在这里作同位语从句，故用that引导同位语从句。故选C。 40.The news ______ our team has won the championship surprised everyone in the school. A. Which B. that C. what D. how 【答案】B 【详解】分析句子结构：主句是“The news surprised everyone in the school”（这个消息让全校的人都很惊讶），其中“the news”是主语，“surprised”是谓语。 空格后“our team has won the championship”（我们队赢得了冠军）是对“the news”的具体内容进行解释说明，二者指的是同一件事，因此这是一个同位语从句（用来解释说明名词的具体内容，与名词是同位关系）。确定同位语从句引导词：同位语从句是完整的句子（主谓宾结构完整，不缺成分），此时需要用that引导，且that在从句中不充当任何成分，只起连接作用。 A. which：是关系代词，常引导定语从句（修饰名词），在从句中需充当主语、宾语等成分，此处不符合；C. what：在从句中需充当主语、宾语或表语等成分，而本句从句完整，无需what； D. how：表示“如何、怎样”，在从句中作方式状语，本句不涉及“方式”，不符合；因此，正确答案是B。 原创精品资源学科网独家享有版权，侵权必究！ 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 $$ 编写说明：河北省2026年对口升学一轮复习《英语知识点清单》，依据《中等职业学校英语课程标准》（2020年版）及历年高考真题进行编写。本资料将高考必备知识进行科学划分，系统总结归纳知识点，全面梳理高考题型。本清单共两部分：第一部分是按照基础语法知识点编写的语法知识清单，第二部分是依据各个高考题型编写的题型技巧清单。每份资料均配备配套讲义、课件和练习题。 本专题是河北省2026年对口升学一轮复习《英语知识点清单》中语法知识清单的第14个专题，内容为名词性从句。 2026年河北省对口升学一轮复习 英语语法知识清单 专题14 名词性从句（真题+模拟题） 【考点解读】 考点 内容解读 河北省近五年对口升学考试统计(题号) 2019年 2020年 2021年 2022年 2023年 2024年 2025年样卷 名词性从句 主语从句 — (22) (11) (24) — (22) 宾语从句 — (24) — (23) — (27) 表语从句 — (23) — (26) (23)(29) (19) 同位语从句 (29) — — — — — — 从河北省近几年对口升学考试情况统计来看，对名词性从句的考查主要集中在主语从句、宾语从句、表语从句和 that引导的同位语从句上。要求学生准确、熟练地运用名词性从句的关联词并掌握名词性从句的语序问题。主要出现在单选里。 【名词性从句·高考真题分类通关】 【考点一：主语从句的用法】 1.(2022年河北省对口升学考试试题) ____ money doesn't grow on trees should be obvious to everyone in the world. A. What B. Whether C. Which D. That 2. (2021年河北省对口升学考试试题) he does it will have an effect on the result. A. What B. How C. Which D. As 3.(2020年河北省对口升学考试试题) I can arrive there on time is not known. A. If B. What C. Whether D. That 4.(2020年河北省对口升学考试试题) Tommy didn't work hard. That is he failed to finish the task. A. what B. why C. when D. that 5.(2020年河北省对口升学考试试题) Our teacher told us that sound much more slowly than light. A. has traveled B. traveled C. travel D. travels 【考点二：宾语从句的用法】 6.(2024年河北省对口升学考试试题) As we all know, eating makes us _ we are now. A. that B. when C. what D. which 7.(2023年河北省对口升学考试试题) As a friend of yours, I want to tell you I heard. A. who B./ C. what D. that 8.(2022年河北省对口升学考试试题)I wonder me about. A. what is he writing to B. what he is writing to C. that is he writing to D. that he is writing to 9.(2020年河北省对口升学考试试题) Our teacher told us that sound much more slowly than light. A. has traveled B. traveled C. travel D. travels 【考点三：表语从句的用法】 10.(2022年河北省对口升学考试试题) That was she did this morning in the bath room. A. that B. why C. what D. whether 11.(2020年河北省对口升学考试试题) Tommy didn't work hard. That is he failed to finish the task. A. what B. why C. when D. that 12. (2025年河北省对口升学考试试题样卷)With cows eating grass leisurely in the field, it seemed _ time had stood still here. A. that B. what C. when D. how 【考点四：同位语从句的用法】 近几年，没有考查同位语从句。 【名词性从句·全真模拟题分类通关】 【考点一：主语从句的用法】 13． ______ is known to us that the earth runs around the sun. A．What B．As C．It D．Which 14．________ he does it will have an effect on the result. A．What B．How C．Which D．As 15．_______ money doesn’t grow on trees should be obvious to everyone in the world. A．What B．Whether C．Which D．That 16．________ the director wants to express in the movie is the love of home land. A．What B．Where C．When D．Why 17．________ he means is “Do you want coffee with your meal or later?” A．Which B．What C．That D．Whatever 18．______ he does has nothing to do with me. A．That B．Who C．What D．If 19．______ I want to know is how the kid managed to escape the fire. A．That B．What C．Who D．Which 20．________ is none of our business. A．If Joe succeeds or fails B．Whether Joe will succeed or fail C．Whether will Joe succeed or fail D．That Joe will succeed or fail 21．________ comes in must keep quiet. A．Whatever B．Whenever C．However D．Whoever 22．It doesn’t matter ________ you pay in cash or through WeChat in this store. A．if B．that C．whether D．how 23．________ he is employed by Hua Wei company is known to everyone. A．What B．Which C．That D．/ 24．________ he told me is a true story. A．That B．What C．How D．Whether 【考点二：宾语从句的用法】 25．I want to know ______ to learn English. A．when did he begin B．when he began C．he when began D．when he begins 26．Your coat is so nice. Could you tell me ______? A．where have you bought it B．where do you buy it C．where you bought it D．where did you buy it 27．—I saw David in the teachers’ office this morning. Do you know ______ he was there? —He went there to hand in his homework. A．how B．whether C．when D．why 28．Our teacher told us that sound ________ much more slowly than light. A．has traveled B．traveled C．travel D．travels 29．The teacher told the students that ________ four seasons in a year. A．there are B．there is C．there was D．there were 30．Can you make sure ________ the gold ring? A．where Alice had put B．where had Alice put C．where Alice has put D．where has Alice put 31．There is no use asking ________ fault it is. What we should do is to solve the problem. A．who B．whose C．what D．which 32．To know ________ the mountain top looks like, you need to reach it. A．what B．when C．where D．which 【考点三：表语从句的用法】 33．That is _________ I was late on Sunday. A．why B．when C．what D．where 34．China is no longer ________. A．what it was used to being B．what it used to be C．what it used to being D．what it was used to be 35．The reason why I didn’t go to Shanghai was ________ a new job. A．because I had found B．because of I having found C．I had found D．that I had found 36．That was _______ she did this morning in the bathroom. A．that B．why C．what D．whether 【考点四：同位语从句的用法】 37． ______ is no possibility ______ Bob can win the first prize in the match. A．It; that B．There; that C．There; whether D．It; whether 38．Along with the letter was his promise ________ he would visit me this coming Christmas. A．which B．that C．what D．whether 39．Do you agree with his idea ________ we set off tomorrow? A．/ B．which C．that D．about which 40.The news ______ our team has won the championship surprised everyone in the school. A. Which B. that C. what D. how 原创精品资源学科网独家享有版权，侵权必究！ 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 $$