Unit 1 Friendship 单元核心单词,词性转换,短语,语法,句型精练-2025-2026学年八年级英语上册单元重难点易错题精练（译林版2024）

班级 姓名 学号 分数 Unit 1 Friendship 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点默写 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 1.honest——__________ (adv.) 诚实地 2.cheer——__________ (adj.) 快乐的 3.humor ——__________(adj.) 幽默的 4.thought——__________ (adj.) 体贴的；深思的 5.patient——__________ (n.) 耐心 6.energy——__________ (adj.) 精力充沛的 7.high——__________ (n.) 身高，高度 8.danger——__________ (adj.) 危险的 9.brave——__________ (adv.) 勇敢地 10.nod——__________ (过去式) 单元知识点习题训练 一、用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．My hometown Chengde is a (wonder) place to take a trip. 2．The old woman wanted to know the (true) about the matter. But nobody told her. 3．Miss Chen likes living in this small town because it’s a(n) (peace) place. 4．The people in Beijing are very (friend). 5．—What’s your brother like?   —He is a boy. He often tells me funny stories. (cheer) 6．—What makes your friend so ? (interest) —His sense of humor. 7．Can you tell your good friend everything about (you)? 8．Tom is a (honest) boy. We don’t like him. 9．The old man was found (die) in the bedroom the next day. 10．What’s your (feel) about the matter? 11．If you feel , you can ask your parents or teachers for help. (happy) 12．It’s the time for Henry to visit some other foreign countries. (two) 13．Beijing is one of the oldest (city) in China. 14．We should protect these animals because they are in (dangerous). 15．My father tells me a (fun) story before he goes to bed. 16．—What’s the boy’s (high)? —About 170 cm. 17．The red bike is (cheap) than that one. 18．When the plant reaches its full (high), flowers grow out and then into fruits. 19．Two (person) can carry the heavy box. 20．The desert is (hot) during the day than at night. 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．The little boy is in great (危险). We must help him. 22．Alice is so tired. (然而), she doesn’t stop working. 23．Monkeys are (有趣的). They like to play with people. 24．Let’s take our kids out for a walk. They get (厌倦的) with staying at home. 25．I think love is the (最) important one because it can give us a life full of happiness. 26．I (相信) that you can find the key to happiness。 27．You have to believe in yourself. That’s the (秘密) of success. 28．Monkeys are very (活跃的). They like jumping around. 29．Every (人) needs to respect others. 30．The cartoon is very funny and it always makes me (大笑). 三、完成句子(本大题共10小题，每小题3分，共30分) 31．我爸爸经常挂上一些五彩的气球。 My father often puts up . 32．为你的朋友保守秘密。这样，你可以赢得他们的信任。 for your friends. In this way, you can win their trust. 33．它们是世界上最古老的虎种。 They are the of tigers in the world. 34．随着时间的流逝，山区学校的学生越来越少。 As time goes by, there are students in schools of the mountainous areas. 35．这只泰迪熊虽然很旧，但它对我来说意义重大。 The teddy bear is very old, but it me. 36．它是音乐历史上最著名的乐队之一。 It is groups in music history. 37．他的房间大约比我的大三倍。 His room is three times than mine. 38．那个戴眼镜的女孩总是在公交车上给有需要的人让座。 The girl with glasses always . 39．她变得越来越瘦。 She is getting . 40．你们班里谁最聪明？ Who is in your class? 四、短文填空(本大题共20小题，每小题2分，共40分) 阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 One early morning, I woke up by a telephone call. It was from a taxi driver. He told me he had my 1 (friend) cell phone (手机). My friend Michael 2 (leave) it in the taxi the night before. 3 driver called others, but I was the first one to answer his call. It was 4 a rainy morning. For taxi drivers in this big city, it’s the best time 5 (make) money. He asked me where he could drop the cell phone off. I told 6 (he) the street where I lived. Then I 7 (quick) jumped out of bed and got dressed, so I could meet him at the corner. When he arrived, I thanked him. And I was even 8 (happy) than my friend. He moved to this country a few weeks ago— and I could only imagine (设想) how important his cell phone was to him! I asked the taxi driver for his name, so my friend could thank him. He said my 9 (thank) were all that he needed. Then he drove off. I e-mailed my friend telling him I had his phone. In the evening, he came to my home and I told him 10 I got it. My friend was very excited to get back his cell phone. He said he would help others as much as possible. 根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限填一词。 For most people, friends are those who stay with us for a long time in our life. But in fact, there is a 1 kind of friends—those who aren’t with us for a long time, but bring us happiness and warmth at some moment. I met my first such friend, Lily in the hospital. She was in the bed next to m 2 . Lily was about two years o 3 than me and much livelier. She would jump out of bed when the nurse left. Without her, I would be a 4 and afraid because my parents cannot stay with me all the time. Two years later, my parents sent me to a nursery school (托儿所) b 5 they were quite busy. There, I met a f 6 girl. Our friendship b 7 with competitions (竞争) and we tried to b 8 each other in all things. Our competitions made me feel happy and excited. And maybe she felt the s 9 as me. We couldn’t speak to each other because of the language differences, but we finally became good friends. Such friends often support (支撑着) us when something bad happens. And in our heart, we should t 10 them for their love and wish them well. $$ 班级 姓名 学号 分数 Unit 1 Friendship 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点默写 1.honest—— (adv.) 诚实地 honestly 2.cheer—— (adj.) 快乐的 cheerful 3.humor ——(adj.) 幽默的 humorous 4.thought—— (adj.) 体贴的；深思的 thoughtful 5. patient—— (n.) 耐心patience 6.energy—— (adj.) 精力充沛的 energetic 7.high—— (n.) 身高，高度 height 8.danger—— (adj.) 危险的 dangerous 9.brave—— (adv.) 勇敢地 bravely 10.nod—— (过去式) nodded 单元知识点习题训练 一、用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．My hometown Chengde is a (wonder) place to take a trip. 【答案】wonderful 【详解】句意：我的家乡承德是一个去旅行的好地方。此处应用形容词作定语，修饰空后的名词place；wonder的形容词wonderful“绝妙的”。故填wonderful。 2．The old woman wanted to know the (true) about the matter. But nobody told her. 【答案】truth 【详解】句意：这位老妇人想知道事情的真相。但是没人告诉她。根据“the…about the matter”可知，此处应用名词作宾语，true“真实的”，形容词，对应名词形式为truth，表示“真相”，故填truth。 3．Miss Chen likes living in this small town because it’s a(n) (peace) place. 【答案】peaceful 【详解】句意：陈小姐喜欢住在这个小镇，因为它是一个宁静的地方。空处应用形容词作定语，peace的形容词peaceful“宁静的”。故填peaceful。 4．The people in Beijing are very (friend). 【答案】friendly 【详解】句意：北京人非常友好。此处应用形容词作表语，friend的形容词为friendly“友好的”。故填friendly。 5．—What’s your brother like?   —He is a boy. He often tells me funny stories. (cheer) 【答案】cheerful 【详解】句意：——你的兄弟是什么样的人？——他是一个快乐的男孩。他经常给我讲有趣的故事。根据“He is a…boy. He often tells me funny stories.”可知，此处指的是他是一个快乐的男孩。cheer“欢呼”，动词，空处应为其形容词形式“cheerful”，作定语修饰名词“boy”。故填cheerful。 6．—What makes your friend so ? (interest) —His sense of humor. 【答案】interesting 【详解】句意：——什么使你的朋友这么有趣？——他的幽默感。根据“makes your friend so...”及所给词可知，此处应用形容词作宾语补足语，表示使你的朋友这么有趣，interest“兴趣”，名词，其形容词为interesting“有趣的”。故填interesting。 7．Can you tell your good friend everything about (you)? 【答案】yourself 【详解】句意：你能告诉你的好朋友你自己的一切吗？根据“Can you tell your good friend everything about…”可知，此处指的是你自己的一切，you“你”，空处应为其反身代词“yourself”，意为“你自己”。故填yourself。 8．Tom is a (honest) boy. We don’t like him. 【答案】dishonest 【详解】句意：汤姆是一个不诚实的男孩。我们不喜欢他。根据“Tom is a…boy. We don’t like him.”可知，此处指的是汤姆是一个不诚实的男孩，dishonest“不诚实的”，形容词作定语修饰名词“boy”。故填dishonest。 9．The old man was found (die) in the bedroom the next day. 【答案】dead 【详解】句意：第二天，老人被发现死在了卧室里。“find sb./sth.+形容词”是常用结构，表示“发现某人/某物处于某种状态”；die是动词，意为“死亡”，其形容词形式是dead，表示“死的；失去生命的”，用来描述老人被发现时的状态，故填dead。 10．What’s your (feel) about the matter? 【答案】feeling 【详解】句意：你对这件事有什么感受？“your”是形容词性物主代词，后面需接名词。“feel”是动词，其名词形式是“feeling”，表示“感受”。故填feeling。 11．If you feel , you can ask your parents or teachers for help. (happy) 【答案】unhappy 【详解】句意：如果你感到不开心，你可以向你的父母或老师寻求帮助。根据“you can ask your parents or teachers for help”可知，此处指感到不高兴，可以向父母或老师寻求帮助，应用形容词unhappy“不高兴的”，作表语。故填unhappy。 12．It’s the time for Henry to visit some other foreign countries. (two) 【答案】second 【详解】句意：这是亨利第二次访问其他国家。分析句子结构和所给单词可知，应填two的序数词形式second“第二”，作定语，修饰后面的名词time。故填second。 13．Beijing is one of the oldest (city) in China. 【答案】cities 【详解】句意：北京是中国最古老的城市之一。one of+the+最高级+名词复数，表示“最怎样的……之一”，city是可数名词，复数是cities，故填cities。 14．We should protect these animals because they are in (dangerous). 【答案】danger 【详解】句意：我们应该保护这些动物，因为它们处于危险之中。dangerous“危险的”是形容词，danger“危险”是名词，in danger“处于危险中”，固定短语。故填danger。 15．My father tells me a (fun) story before he goes to bed. 【答案】funny 【详解】句意：我爸爸在睡觉前给我讲了一个有趣的故事。根据“My father tells me a … story”可知，此处是指父亲讲的故事是能引人发笑的，应用fun的形容词形式funny“有趣的，滑稽的”，在句中作定语，修饰名词“story”。故填funny。 16．—What’s the boy’s (high)? —About 170 cm. 【答案】height 【详解】句意：——这个男孩的身高是多少？——大约170厘米。根据“the boy’s”结合提示词可知，此处应用height“身高”，名词作主语。故填height。 17．The red bike is (cheap) than that one. 【答案】cheaper 【详解】句意：那辆红色自行车比那辆更便宜。由than可知，这里用比较级，cheap的比较级为cheaper。故填cheaper。 18．When the plant reaches its full (high), flowers grow out and then into fruits. 【答案】height 【详解】句意：当植物长到最大高度时，就会开花，然后结出果实。根据“When the plant reaches its full”可知，此处应用high的名词height，意为“高度”。故填height。 19．Two (person) can carry the heavy box. 【答案】persons 【详解】句意：两个人能够扛这个沉重的箱子了。two后加复数名词，person的复数形式是persons。故填persons。 20．The desert is (hot) during the day than at night. 【答案】hotter 【详解】句意：沙漠白天比晚上热。根据“than”可知用比较级，hot的比较级是hotter。故填hotter。 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．The little boy is in great (危险). We must help him. 【答案】danger 【详解】句意：那个小男孩处于极大危险之中。我们必须帮助他。观察句子，这里用在介词in后，那么应该是名词或动名词，再结合中文提示danger“危险”，短语in danger“处于危险之中”符合句意，故填danger。 22．Alice is so tired. (然而), she doesn’t stop working. 【答案】However 【详解】句意：爱丽丝太累了。然而，她并没有停止工作。however表示“然而”，首字母要大写。故填However。 23．Monkeys are (有趣的). They like to play with people. 【答案】funny 【详解】句意：猴子是有趣的。它们喜欢和人玩耍。 funny“有趣的”，形容词作表语，描述猴子的特点。故填funny。 24．Let’s take our kids out for a walk. They get (厌倦的) with staying at home. 【答案】bored 【详解】句意：让我们带我们的孩子出去散步。他们厌烦待在家里。根据汉语提示可知，bored意为“（感到）厌倦的”，为形容词，常用来形容人，作表语。故填bored。 25．I think love is the (最) important one because it can give us a life full of happiness. 【答案】most 【详解】句意：我认为爱是最重要的，因为它可以给我们一个充满幸福的生活。most“最”符合题意，the most important“最重要的”。故填most。 26．I (相信) that you can find the key to happiness。 【答案】believe 【详解】句意：我相信你可以找到幸福的关键。believe“相信”，根据“that you can”可知主句应用一般现在时，主语为I，谓语用动词原形。故填believe。 27．You have to believe in yourself. That’s the (秘密) of success. 【答案】secret 【详解】句意：你必须相信自己。这是成功的秘诀。根据汉语提示可知，空处应填secret表示 “秘密，秘诀”，可数名词；另根据“That’s”可知，应用单数形式secret。故填secret。 28．Monkeys are very (活跃的). They like jumping around. 【答案】active 【详解】句意：猴子非常活跃。它们喜欢到处跳。active“活跃的”，形容词作表语。故填active。 29．Every (人) needs to respect others. 【答案】person 【详解】句意：每个人都需要尊重他人。空格前是 “Every”，表示“每一个”，修饰单数名词；根据汉语提示，“person”意为“人”，名词单数，作主语，符合句意。故填person。 30．The cartoon is very funny and it always makes me (大笑). 【答案】laugh 【详解】句意：漫画非常有趣，总是让我大笑。laugh“大笑”，make sb do sth“让某人做某事”。故填laugh。 三、完成句子(本大题共10小题，每小题3分，共30分) 31．我爸爸经常挂上一些五彩的气球。 My father often puts up . 【答案】some colourful balloons/some colorful balloons 【详解】some“一些”，修饰复数名词，balloon“气球”，colorful=colourful“彩色的”，是形容词，修饰名词balloons，用形容词，故填some colourful balloons/some colorful balloons。 32．为你的朋友保守秘密。这样，你可以赢得他们的信任。 for your friends. In this way, you can win their trust. 【答案】Keep secrets 【详解】keep secrets“保守秘密”，secret用复数形式泛指多个秘密；此句是表示建议或要求的祈使句，动词keep应用原形。故填Keep secrets。 33．它们是世界上最古老的虎种。 They are the of tigers in the world. 【答案】 oldest type 【详解】根据中英文对照可知，此处缺少“最古老的虎种”的英文内容，the oldest“最古老的”；the type of“……的类型”，形容词最高级oldest修饰名词type。故填oldest；type。 34．随着时间的流逝，山区学校的学生越来越少。 As time goes by, there are students in schools of the mountainous areas. 【答案】 fewer and fewer 【详解】根据中英文对照可知，空处表达的意思是“越来越少”。students是可数名词复数，“越来越少”修饰可数名词复数用“fewer and fewer”。故填fewer；and；fewer。 35．这只泰迪熊虽然很旧，但它对我来说意义重大。 The teddy bear is very old, but it me. 【答案】 means a lot to 【详解】根据but可知，转折连词前后时态一致，故时态为一般现在时。“对……来说意义重大”mean a lot to。由于“it”作主语，动词用三单形式means。故填means；a；lot；to。 36．它是音乐历史上最著名的乐队之一。 It is groups in music history. 【答案】 one of the most famous 【详解】“one of the+形容词最高级+名词复数”意为“最……之一”，famous“著名的”，最高级是most famous。故填one；of；the；most；famous。 37．他的房间大约比我的大三倍。 His room is three times than mine. 【答案】 about larger 【详解】根据句意可知，这里缺少“大约”和“大”的意思，“大约”英文是“about”，大是“large”，根据句意是大三倍，用句型“基数词+times+adj.比较级+than”，所以要用“larger”。故填about；larger。 38．那个戴眼镜的女孩总是在公交车上给有需要的人让座。 The girl with glasses always . 【答案】gives her seat on the bus to someone in need 【详解】由题干和所给的英语翻译可知，“给有需要的人让座”译成：give her seat to someone in need；“在公交车上”译成：on the bus。由always 可知，此题的时态为一般现在时，主语The girl是单数，因此谓语用三单形式。故填gives her seat on the bus to someone in need。 39．她变得越来越瘦。 She is getting . 【答案】thinner and thinner 【详解】 “比较级and比较级”结构用来表示“越来越……”，表示状态上的一种渐进的变化；thin意为“瘦的”，是一个形容词，比较级形式注意要双写n然后加er。故填thinner and thinner。 40．你们班里谁最聪明？ Who is in your class? 【答案】 the cleverest 【详解】空处缺少“最聪明”。clever“聪明的”，形容词；根据“in your class”可知，空处需用形容词最高级形式。故填the；cleverest。 四、短文填空(本大题共20小题，每小题2分，共40分) 阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 One early morning, I woke up by a telephone call. It was from a taxi driver. He told me he had my 1 (friend) cell phone (手机). My friend Michael 2 (leave) it in the taxi the night before. 3 driver called others, but I was the first one to answer his call. It was 4 a rainy morning. For taxi drivers in this big city, it’s the best time 5 (make) money. He asked me where he could drop the cell phone off. I told 6 (he) the street where I lived. Then I 7 (quick) jumped out of bed and got dressed, so I could meet him at the corner. When he arrived, I thanked him. And I was even 8 (happy) than my friend. He moved to this country a few weeks ago— and I could only imagine (设想) how important his cell phone was to him! I asked the taxi driver for his name, so my friend could thank him. He said my 9 (thank) were all that he needed. Then he drove off. I e-mailed my friend telling him I had his phone. In the evening, he came to my home and I told him 10 I got it. My friend was very excited to get back his cell phone. He said he would help others as much as possible. 【答案】 1．friend’s 2．left 3．The 4．on 5．to make 6．him 7．quickly 8．happier 9．thanks 10．how 【导语】本文讲述了作者在一个清晨接到出租车司机电话，得知司机捡到了朋友前一晚遗落在车上的手机，以及后续相关事情的经过。 1．句意：他告诉我他拿着我朋友的手机。根据“He told me he had my…cell phone.”可知，这里表示“我朋友的”手机，需要用名词所有格形式，在名词friend后面加’s来表示所属关系，即朋友的手机。故填friend’s。 2．句意：我的朋友迈克尔前一天晚上把它落在出租车里了。根据“My friend Michael…it in the taxi the night before.”可知，这里描述的是过去发生的动作，“the night before”是过去的时间点，所以动词要用一般过去式，leave的过去式是left。故填left。 3．句意：这位司机给其他人打了电话，但我是第一个接他电话的人。根据“…driver called others, but I was the first one to answer his call.”可知这里特指前面提到的那位出租车司机，所以要用定冠词The，表示特指。故填The。 4．句意：那是在一个下雨的早晨。根据“It was…a rainy morning.”可知这里表示 在”一个下雨的早晨，在具体某一天的早晨，要用介词on。故填on。 5．句意：对于这个大城市的出租车司机来说，这是赚钱的最佳时机。根据“it’s the best time…money.”可知这里使用It’s+名词+to do sth句型，动词不定式作定语。故填to make。 6．句意：我告诉他我住的街道。根据“I told…the street where I lived.”可知这里told是动词，后面要接宾语，he是主格形式，其宾格形式是him，所以要用him作宾语，表示告诉“他”街道信息。故填him。 7．句意：然后我迅速从床上跳起来并穿好衣服，这样我就能在拐角处和他碰面。根据“Then I…jumped out of bed and got dressed.”可知这里需要一个副词来修饰动词jumped和got dressed，表示动作发生的方式，quick是形容词，其副词形式是quickly，所以要用quickly，表示“迅速地”跳起来和穿好衣服。故填quickly。 8．句意：我甚至比我的朋友还高兴。根据“And I was even…than my friend.” 这里有than这个比较级的标志词，可知形容词要用比较级形式，happy的比较级是happier，表示“更高兴的”，即我比朋友更高兴。故填happier。 9．句意：他说我的感谢就是他所需要的全部。根据“He said my…were all that he needed.”可知这里的thank是动词，作名词用时常用复数形式thanks，表示“感谢”，这里指我的感谢之情，作主语，谓语动词是were，所以要用复数形式thanks。故填thanks。 10．句意：晚上，他来到我家，我告诉他我是如何拿到手机的。根据“In the evening, he came to my home and I told him…I got it.”可知这里表示告诉朋友拿到手机的方式，也就是“如何”拿到的，所以要用how引导宾语从句，表示方式。故填how。 根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限填一词。 For most people, friends are those who stay with us for a long time in our life. But in fact, there is a 1 kind of friends—those who aren’t with us for a long time, but bring us happiness and warmth at some moment. I met my first such friend, Lily in the hospital. She was in the bed next to m 2 . Lily was about two years o 3 than me and much livelier. She would jump out of bed when the nurse left. Without her, I would be a 4 and afraid because my parents cannot stay with me all the time. Two years later, my parents sent me to a nursery school (托儿所) b 5 they were quite busy. There, I met a f 6 girl. Our friendship b 7 with competitions (竞争) and we tried to b 8 each other in all things. Our competitions made me feel happy and excited. And maybe she felt the s 9 as me. We couldn’t speak to each other because of the language differences, but we finally became good friends. Such friends often support (支撑着) us when something bad happens. And in our heart, we should t 10 them for their love and wish them well. 【答案】 1．(a)nother 2．(m)ine 3．(o)lder 4．(a)lone 5．(b)ecause 6．(f)oreign 7．(b)egan 8．(b)eat 9．(s)ame 10．(t)hank 【导语】本文是一篇记叙文，介绍了作者认为的两种朋友，以及他们给作者留下的印象。作者因有这样的朋友而开心。 1．句意：事实上，还有另一种朋友——那些很长时间没有和我们待在一起，却在某些时候给我们带来欢乐和温暖的人。根据“kind of friends”及首字母提示可知，此处指another“另一种”，故填(a)nother。 2．句意：她就在我旁边的床上。根据上文“Lily in the hospital”及首字母提示可知，此处指的是“她的床在我的床边”，空后没有名词，此处应用名词性物主代词，故填(m)ine。 3．句意：Lily比我大两岁，更活泼一些。根据“two years…than”及首字母o可知，此处指“年长两赚岁”，用old的比较级older。故填(o)lder。 4．句意：没有她，我感到孤独和恐惧。根据“because my parents cannot stay with me all the time”及首字母提示可知，作者的父母不能长时间地陪伴作者，因此作者会感到孤单，此处是alone“孤单的”，是形容词，作表语，故填(a)lone。 5．句意：两年后，父母把我送到了一所托儿所，因为他们很忙。根据“my parents sent me to a nursery school…they were quite busy.”及首字母提示可知，此处指的是because“因为”，引导原因状语从句，故填(b)ecause。 6．句意：在那里，我遇到了一位外国女孩。根据下文“We couldn’t speak to each other because of the language differences, but we finally became good friends.”及首字母可知，双方语言不同，说明是外国来的女孩，foreign“外国的”，修饰名词girl。故填(f)oreign。 7．句意：我们的友谊始于竞争，我们在所有事情上都试图打败对方。根据“Our friendship...with competitions”及首字母提示可知，此处是begin with“从……开始”，描述过去的事情，动词用过去式，故填(b)egan。 8．句意：我们的友谊始于竞争，我们在所有事情上都试图打败对方。根据“with competition”和“each othe in all things”可知，两人通过竞争和打败对方争夺一切，beat“打败”，try to do sth“试图做某事”。故填(b)eat。 9．句意：也许她感觉和我一样。根据下文“We couldn’t speak to each other because of the language differences, but we finally became good friends.”可知，两人成了好朋友，说明此处作者觉得两人都觉得这样的竞争让她们感到开心刺激。the same as“和……一样”。故填(s)ame。 10．句意：并且在我们的心里，我们应该感谢他们的爱，并祝他们一切顺利。根据“and wish them well”及首字母提示可知，此处是说要感谢他们，thank“感谢”，情态动词should后加动词原形。故填(t)hank。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $$