Unit 7 Outdoor fun(单元同步练习） - 2024-2025学年译林版（2024）七年级下册英语

Welcome to the unit 一、单词拼写（每题1分，共5分） 1. 答案：jogging - 解析：“before”是介词，后接动词时要用动名词形式，“jog”（跳跃）的动名词形式为“jogging” ，“before jogging”表示“在慢跑之前”，符合在运动前热身的语境。 2. 答案：break - 解析：根据“After a long exam, all the students are tired.”可知，学生们考试后很疲惫，需要休息。“have a break”是固定短语，意为“休息一下”，所以这里填“break”。 3. 答案：camera - 解析：结合“when you go camping”（当你去露营时）的语境，去露营通常会带上相机记录美好瞬间，以“c”开头表示“相机”的单词是“camera”。 4. 答案：riding - 解析：“like doing sth.”是固定搭配，表示“喜欢做某事”，“ride horses”（骑马）是常见表达，所以“ride”要用动名词形式“riding”。 5. 答案：light - 解析：根据常识，太阳给我们提供光和热，“light”有“光”的意思，且首字母为“l”，故填“light”。 二、用所给单词的适当形式填空（每题1分，共5分） 1. 答案：activities - 解析：“activity”（活动）是可数名词，“other”（其他的）后接可数名词复数形式，所以“activity”要变为“activities”。 2. 答案：exciting - 解析：“exciting”和“excited”均源于“excite”，“exciting”意为“令人兴奋的”，常修饰物；“excited”意为“感到兴奋的”，常修饰人。此处修饰“developments”（发展），属于物，所以用“exciting”。 3. 答案：balance - 解析：“more”在这里修饰名词，“balance”作名词时意为“平衡”，“more balance”表示“更多的平衡” ，符合“饮食需要更多平衡”的语境。 4. 答案：cycling - 解析：分析句子结构，“I think”后接宾语从句，从句中缺少主语，动词不能直接作主语，需变为动名词形式。“cycle”（骑自行车）的动名词形式是“cycling”，所以填“cycling”。 5. 答案：to protect - 解析：“It's +形容词 + to do sth.”是固定句型，意为“做某事是……的”，所以此处用“protect”（保护）的动词不定式形式“to protect”。 三、单项选择（每题1分，共5分） 1. 答案：B - 解析：表示在具体某一天的晚上，要用介词“on”，“a clear night”（一个晴朗的夜晚）是具体的晚上，所以选B。“in”用于泛指的上午、下午、晚上；“at”用于具体的时刻；“for”后常接一段时间，均不符合语境。 2. 答案：A - 解析：描述河流的流动常用“run”，“run through”表示“流经”。句子是一般现在时，主语“The river”是第三人称单数，所以“run”要用第三人称单数形式“runs” 。“walk”（步行）、“swim”（游泳）、“jump”（跳跃）均不符合河流流动的语境。 3. 答案：C - 解析：根据回答“It's about 2,000 metres high.”可知，问句是询问山的高度，用“How high”（多高）。“How long”用于询问长度或时间的长短；“How far”用于询问距离；“How many”用于询问数量，均不符合题意。 4. 答案：B - 解析：“on one's own”是固定短语，意为“独自”，所以选B。“to”“for”“in”与“one's own”搭配均无“独自”的意思。 5. 答案：A - 解析：“had better do sth.”是固定用法，表示“最好做某事”，后接动词原形，所以选A。“to do”是动词不定式；“doing”是动名词形式；“does”是第三人称单数形式，均不符合“had better”的用法。 四、按要求完成句子（每题2分，共10分） 1. 答案：What would - 解析：对“go cycling”（去骑自行车，是做的事情）提问，要用“What”（什么）。“I'd like”是“I would like”的缩写，变一般疑问句时，把“would”提前，故答案是“What would”。 2. 答案：How wide is the lake? - 解析：对“500 metres wide”（500米宽，描述宽度）提问，用“How wide”（多宽），后接一般疑问句。原句中有“is”，变一般疑问句时把“is”提前，故答案是“How wide is the lake?” 3. 答案：Why does - 解析：对“because it’s cool”（因为它很酷，表原因）提问，要用“Why”（为什么）。“wants”是实义动词第三人称单数形式，变一般疑问句时要借助助动词“does”，同时“wants”要变回原形“want”，故答案是“Why does”。 4. 答案：it's wonderful to be in the mountains - 解析：“it's +形容词 + to do sth.”表示“做某事是……的”，“身处山间”是“be in the mountains”，“美妙的”是“wonderful”，所以答案是“it's wonderful to be in the mountains”。 5. 答案：What an interesting story it is! 或How interesting the story is! - 解析：感叹句常见结构有：What + a/an +形容词 +可数名词单数 +主语 +谓语！或How +形容词/副词 +主语 +谓语！“an interesting story”是“形容词 +可数名词单数”结构，用What引导时，答案是“What an interesting story it is!”；“interesting”是形容词，用How引导时，答案是“How interesting the story is!”。 五、阅读选择（每题2分，共10分） 1. 答案：B - 解析：文中明确提到“It is in North Africa.”，所以撒哈拉沙漠在北非，选B。 2. 答案：C - 解析：文中指出“It is about 9,320,000 square kilometres.”，即撒哈拉沙漠面积约9320000平方公里，选C。 3. 答案：B - 解析：从文中“In some places, it is very hot during the day, but very cold at night. In other places, it is always hot and dry.”可知，撒哈拉沙漠的气候在一些地方白天热晚上冷，在其他地方总是炎热干燥，B选项表述更全面，选B。 4. 答案：B - 解析：根据文中“Some plants have very long roots to get water from deep underground.”可知，一些植物有长根是为了从地下深处获取水分，选B。 5. 答案：A - 解析：文中提到“The Sahara Desert is an important part of the earth. We should protect it and learn more about it.”，所以我们应该保护撒哈拉沙漠，选A。 Reading 一、单词拼写（每题1分，共5分） 1. 答案：app - 解析：根据“downloaded(下载)”和“to check his English level”（检查他的英语水平）可知，下载的是一个可以检查英语水平的应用程序，结合首字母“a”，故填“app”（应用程序）。 2. 答案：follow - 解析：根据“cycle outside”（在外面骑自行车）和“traffic rules”（交通规则）可知，在外面骑车时要遵守交通规则，结合首字母“f”，“follow”有“遵守”的意思，所以填“follow”。 3. 答案：enjoyable - 解析：由“We all had a great time.”（我们都玩得很开心）可知，这次乡村之旅很愉快，结合首字母“e”，“enjoyable”表示“令人愉快的”，故填“enjoyable”。 4. 答案：experience - 解析：根据“He took part in the activity for many times.”（他多次参加这个活动）可知，他在露营方面有很多经验。“experience”作“经验”讲时是不可数名词，故填“experience”。 5. 答案：riding - 解析：“go horse riding”是固定短语，意为“去骑马”，所以填“riding”。 二、单项选择（每题1分，共5分） 1. 答案：D - 解析：根据“I choose Dance Club.”（我选择舞蹈俱乐部）可知，篮球俱乐部和跑步俱乐部都不选。“Neither”表示“两者都不”，符合语境，选D。“Both”表示“两者都”；“Either”表示“两者中的任何一个”；“None”表示“三者或三者以上都不” ，均不符合题意。 2. 答案：B - 解析：“be excited about”表示“对……感到兴奋” ，主语是“The students”（学生们，指人），要用“excited”（感到兴奋的）。“exciting”（令人兴奋的）通常修饰物；“excite”是动词；“excitement”是名词，所以选B。 3. 答案：B - 解析：“arrive at”后接小地点，“arrive in”后接大地点，“the small village”（小村庄）是小地点，所以用“arrive at” ，选B。“arrive to”表达错误；“for”不符合语境。 4. 答案：D - 解析：根据“Sorry”和“We only have some juice now.”（我们现在只有一些果汁了）可知，没有咖啡了。“none”表示“没有一个；没有一点” ，可指代前文提到的事物，这里指代咖啡，符合语境，选D。“nothing”表示“没有什么东西” ，不强调数量；“something”表示“某事；某物”；“either”表示“两者中的任何一个” ，均不符合题意。 5. 答案：C - 解析：根据“I took an umbrella.”（我带了一把伞）可知，带了伞是幸运的，这里用副词“Luckily”（幸运地）修饰整个句子。“Luck”是名词；“Lucky”是形容词；“Unluckily”表示“不幸地” ，与语境不符，所以选C。 三、根据中文完成句子（每题2分，共10分） 1. 答案：in a beautiful and quiet area - 解析：“在一个……地区”用“in an area” ，“美丽而安静的”是“beautiful and quiet”，所以答案是“in a beautiful and quiet area”。 2. 答案：arrived at - 解析：“到达”用“arrive at”（小地点）或“arrive in”（大地点） ，“the top of the mountain”（山顶）是小地点，句子时态是一般过去时，“arrive”的过去式是“arrived”，故答案是“arrived at”。 3. 答案：I'm proud of myself; by myself - 解析：“为……感到骄傲”用“be proud of” ，“独自”用“by oneself”，句子主语是“I”，反身代词用“myself”，所以答案是“I'm proud of myself; by myself”。 4. 答案：a driver stopped and told us which way to go - 解析：“停下来”是“stop” ，“告诉某人做某事”是“tell sb. to do sth.”，“走哪条路”是“which way to go”，句子时态是一般过去时，“stop”和“tell”的过去式分别是“stopped”和“told”，故答案是“a driver stopped and told us which way to go”。 5. 答案：proud of - 解析：“为……感到骄傲”是“be proud of”，故答案是“proud of”。 四、阅读选择（每题2分，共10分） 1. 答案：B - 解析：文中明确提到“Last weekend, Tom and his friends went to the mountains.”，所以汤姆和他的朋友们上周去了山里，选B。 2. 答案：B - 解析：从文中“They planned to have a picnic there.”可知，他们计划在那里野餐，选B。 3. 答案：B - 解析：由“While they were eating, it started to rain.”可知，他们吃东西的时候开始下雨了，选B。 4. 答案：C - 解析：根据“They didn't bring umbrellas. So they had to run to a small house nearby.”可知，因为没带伞且下雨了，所以他们跑到小房子里，选C。 5. 答案：B - 解析：文中提到“He gave them some dry clothes and let them stay in the house until the rain stopped.”，所以老人给了他们干衣服并让他们待在房子里，选B。 Grammar & Pronunciation 一、用所给单词的适当形式填空（每题1分，共5分） 1. 答案：laugh - 解析：“make sb. do sth.”是固定搭配，表示“使某人做某事”，所以这里用“laugh”的原形。 2. 答案：left - 解析：“ten years ago”（十年前）是一般过去时的标志，“leave”的过去式是“left”，所以填“left”。 3. 答案：haven't seen - 解析：“since last week”（自从上周）是现在完成时的标志，现在完成时的结构是“have/has +过去分词”。主语是“I”，用“have”，“see”的过去分词是“seen”，其否定形式是在“have”后加“not”，可缩写为“haven't”，故填“haven't seen”。 4. 答案：dropped - 解析：根据语境，这里表示“你把钱掉在地上了”，动作发生在过去，用一般过去时，“drop”的过去式是“dropped”，故填“dropped”。 5. 答案：went - 解析：“last night”（昨晚）是一般过去时的标志，“go”的过去式是“went”，所以填“went”。 二、单项选择（每题1分，共5分） 1. 答案：A - 解析：根据“yet”（已经）可知，句子时态是现在完成时。现在完成时的一般疑问句结构是“Have/Has +主语 +过去分词 +其他？”，主语是“you”，用“Have”，“see”的过去分词是“seen”，所以选A。 2. 答案：C - 解析：“yesterday”（昨天）是一般过去时的标志，“go”的过去式是“went”，所以选C。 3. 答案：B - 解析：“played”中“ed”的发音规则是：在浊辅音和元音后发[d]，“play”中“ay”发[eɪ]，是元音，所以“played”中“ed”发音为[d]，选B。 4. 答案：D - 解析：“wanted”“needed”“visited”中“ed”发音为[ɪd]，“helped”中“ed”在清辅音[p]后，发音为[t]，与其他三个不同，选D。 5. 答案：B - 解析：“be excited to do sth.”表示“做某事很兴奋” ，主语是“He”（人），用“excited”（感到兴奋的）。“exciting”（令人兴奋的）通常修饰物；“excite”是动词；“excitement”是名词，所以选B。 三、根据中文完成句子（每题2分，共10分） 1. 答案：for the first time - 解析：“第一次”的常见表达是“for the first time”，故答案是“for the first time”。 2. 答案：met; yesterday - 解析：“遇到”是“meet” ，“昨天”是“yesterday”，句子时态是一般过去时，“meet”的过去式是“met”，所以答案是“met; yesterday”。 3. 答案：so; that - 解析：“so... that...”表示“如此……以至于……”，引导结果状语从句，“so”后接形容词或副词，“that”后接句子，故答案是“so; that”。 4. 答案：spend; practicing - 解析：“spend +时间 + (in) doing sth.”表示“花费时间做某事”，“练习”是“practice”，“every morning”（每天早上）是一般现在时的标志，主语是“I”，用动词原形“spend”，“practice”用 -ing形式“practicing”，故答案是“spend; practicing”。 5. 答案：keep a balance - 解析：“保持平衡”是“keep a balance”，“should”（应该）是情态动词，后接动词原形，所以答案是“keep a balance”。 四、短文填空（每题1分，共5分） 1. 答案：swam - 解析：“Last summer”（去年夏天）是一般过去时的标志，“swim”的过去式是“swam”，故填“swam”。 2. 答案：picnic - 解析：“野餐”用“picnic”，“have a picnic”表示“进行野餐”，故填“picnic”。 3. 答案：drank - 解析：and连接并列结构，前面“ate”是“eat”的过去式，所以这里“drink”也要用过去式“drank” 。 4. 答案：told - 解析：and连接并列结构，“sang”是“sing”的过去式，所以“tell”也要用过去式“told” 。 5. 答案：memorable - 解析：“难忘的”常见英文表达为“memorable” ，故填“memorable”。 Integration & Assessment & Further study 一、用所给单词的适当形式填空（每题1分，共5分） 1. 答案：careful - 解析：be动词后接形容词作表语，“care”的形容词形式是“careful”（认真的） ，故填“careful”。 2. 答案：dangerous - 解析：名词“animals”前需用形容词修饰，“danger”的形容词形式是“dangerous”（危险的） ，故填“dangerous”。 3. 答案：succeeded - 解析：“last week”（上周）是一般过去时的标志，“success”的动词形式是“succeed”，其过去式为“succeeded” ，故填“succeeded”。 4. 答案：development - 解析：“The +名词 + of...”表示“……的……” ，“develop”的名词形式是“development”（发展） ，故填“development”。 5. 答案：decision - 解析：“make a +名词” ，“decide”的名词形式是“decision”（决定） ，故填“decision”。 二、根据中文完成句子（每题2分，共10分） 1. 答案：take action - 解析：“采取措施”常见表达为“take action” ，故答案是“take action”。 2. 答案：excited about - 解析：“对……感到兴奋”是“be excited about” ，故答案是“excited about”。 3. 答案：preparing for - 解析：“为……做准备”是“prepare for” ，句子用现在进行时“be +现在分词” ，“prepare”的现在分词是“preparing” ，故答案是“preparing for”。 4. 答案：No matter - 解析：“无论”常见表达为“no matter” ，故答案是“No matter”。 5. 答案：hearing from - 解析：“期待做某事”是“look forward to doing sth.” ，“收到……的来信”是“hear from” ，故答案是“hearing from”。 三、写作（15分） 参考范文 Last week, our school organized a hiking trip to the nearby mountains. We set off early in the morning. When we arrived there, the fresh air and beautiful scenery made us excited. First, we started our hiking journey along the path. Along the way, we enjoyed the green trees, colorful flowers and the singing of birds. Then, we found a nice place to have a rest. Some of us shared snacks, while others played games. This hiking trip was really meaningful. It not only made us get close to nature and relax ourselves, but also strengthened our friendship. We all look forward to the next school trip. 学科网（北京）股份有限公司 $$ 译林版（2024）七年级下册英语Unit 7 Outdoor fun 单元同步练习（含解析） Welcome to the unit 一、单词拼写（每题1分，共5分） 1. You’d better spend some time warming up (热身) before j________ to protect yourself. 2. After a long exam, all the students are tired. They can have a b________ at lunchtime. 3. Don’t forget to take your c________ when you go camping. 4. My father likes r________ horses on the farm. 5. The sun gives us l______ and heat. 二、用所给单词的适当形式填空（每题1分，共5分） 1. What other outdoor ________ (activity) do you know about, boys and girls? 2. This is one of the most ________ (excite) developments in biology in recent years. 3. Your diet needs more ________ (balance). You eat too much meat. 4. I think ________ (cycle) is interesting and I really want to learn how to do it. 5. It's important ______ (protect) our environment. 三、单项选择（每题1分，共5分） 1. ( ) We can see a lot of stars ______ a clear night. A. in B. on C. at D. for 2. ( ) The river ______ through the city and goes to the sea. A. runs B. walks C. swims D. jumps 3. ( ) —______ is the mountain? —It's about 2,000 metres high. A. How long B. How far C. How high D. How many 4. ( ) I have to do this job ________my own, but I think I can manage. A．to B．on C．for D．in 5. ( ) You'd better ______ your homework carefully. A. do B. to do C. doing D. does 四、按要求完成句子（每题2分，共10分） 1. I’d like to go cycling. (对划线部分提问) ________ ________ you like to do? 2. The lake is 500 metres wide.（对画线部分提问） ________________________________________________ 3. He wants to go horse riding because it’s cool. (对划线部分提问) ________ ________ he want to go horse riding? 4. 能身处山间，还有那么多雪，这也是很美妙的。 Also, _____________________________________, with all that snow. 5. It's a very interesting story.（改为感叹句） ________________________________________________ 五、阅读选择（每题2分，共10分） The Sahara Desert is the largest hot desert in the world. It is in North Africa. It is about 9,320,000 square kilometres. The desert has different climates. In some places, it is very hot during the day, but very cold at night. In other places, it is always hot and dry. There are many plants and animals in the Sahara Desert. Some plants have very long roots to get water from deep underground. Some animals are active at night to avoid the heat during the day. The Sahara Desert is an important part of the earth. We should protect it and learn more about it. 1. ( ) Where is the Sahara Desert? A. In South Africa. B. In North Africa. C. In Asia. D. In Europe. 2. ( ) How large is the Sahara Desert? A. About 9,320,000 square metres. B. About 932,000 square kilometres. C. About 9,320,000 square kilometres. D. About 93,200,000 square kilometres. 3. ( ) What's the weather like in the Sahara Desert? A. It's always hot and dry. B. It's very hot during the day and very cold at night in some places. C. It's always very cold. D. It's always very wet. 4. ( ) Why do some plants in the Sahara Desert have long roots? A. To avoid the heat. B. To get water from deep underground. C. To make them look more beautiful. D. To grow faster. 5. ( ) What should we do to the Sahara Desert? A. Protect it. B. Destroy it. C. Ignore it. D. Just visit it. Reading 一、单词拼写（每题1分，共5分） 1. He downloaded (下载) an a________ to check his English level. 2. When you cycle outside, it is important to f________ the traffic rules (交通规则). 3. The trip to the countryside was really e______. We all had a great time. 4. Uncle Zhang has much e________ in camping. He took part in the activity for many times. 5. I went horse r________ last week. It was exciting! 二、单项选择（每题1分，共5分） 1. ( ) —Which one do you prefer, Basketball Club or Running Club? —________. I choose Dance Club. A．Both B．Either C．None D．Neither 2. ( ) The students are ______ about the coming school trip. A. exciting B. excited C. excite D. excitement 3. ( ) We arrived ______ the small village on a sunny morning. A. in B. at C. to D. for 4. ( ) —May I have a cup of coffee, please? —Coffee? Sorry, there’s ________ left. We only have some juice now. A．nothing B．something C．either D．none 5. ( ) There was a heavy rain last night. ______, I took an umbrella. A. Luck B. Lucky C. Luckily D. Unluckily 三、根据中文完成句子（每题2分，共10分） 1.那个村子处于一个美丽而安静的地区。 The village is _____________________________________________________. 2. 当我到达山顶时，我看到了美丽的风景。 When I ______ ______ the top of the mountain, I saw the beautiful scenery. 3. 我为自己能独自处理这个问题而感到骄傲。 ________________ for dealing with the problem ________. 4. 我有一点担心，但幸运的是，一个司机停下来告诉我们该走哪条路。 I was a little worried, but luckily, ___________________________________________. 5. 我们为他的成功感到骄傲。 We are ______ ______ his success. 四、阅读选择（每题2分，共10分） Last weekend, Tom and his friends went to the mountains. They planned to have a picnic there. When they arrived, they found a nice place near a river. They put their things down and started to play games. After a while, they felt hungry. They took out their food and began to eat. They had sandwiches, fruits and drinks. While they were eating, it started to rain. They were all very surprised. They didn't bring umbrellas. So they had to run to a small house nearby. In the house, they met an old man. The old man was very kind. He gave them some dry clothes and let them stay in the house until the rain stopped. When the rain stopped, they thanked the old man and left. They had a special but interesting trip. 1. ( ) Where did Tom and his friends go last weekend? A. To the park. B. To the mountains. C. To the beach. D. To the zoo. 2. ( ) What did they plan to do there? A. To have a party. B. To have a picnic. C. To play basketball. D. To go fishing. 3. ( ) What happened when they were eating? A. A dog came. B. It started to rain. C. They lost their food. D. The old man came. 4. ( ) Why did they run to a small house? A. Because they wanted to visit the old man. B. Because they wanted to find something to eat. C. Because they didn't bring umbrellas and it was raining. D. Because they were tired and wanted to have a rest. 5. ( ) What did the old man do? A. He gave them some food. B. He gave them some dry clothes and let them stay in the house. C. He helped them find their way back. D. He played games with them. Grammar & Pronunciation 一、用所给单词的适当形式填空（每题1分，共5分） 1. The story made us ______ (laugh). 2. He ______ (leave) his hometown ten years ago. 3. I ______ (not see) him since last week. 4. Hey! Lady! You d________ your money on the ground. 5. She ______ (go) to the cinema with her friends last night. 二、单项选择（每题1分，共5分） 1. ( ) —______ you ______ the film yet? —Yes, I saw it last week. A. Have; seen B. Did; see C. Do; see D. Are; seeing 2. ( ) I ______ to the park yesterday. It was great. A. go B. goes C. went D. going 3. ( ) The underlined part in the word “played” is pronounced as ______. A. [t] B. [d] C. [ɪt] D. [ɪd] 4. ( ) Which of the following “ed” has a different pronunciation from the other three? A. wanted B. needed C. visited D. helped 5. ( ) He is ______ to hear the good news. A. exciting B. excited C. excite D. excitement 三、根据中文完成句子（每题2分，共10分） 1. 上学期，我第一次尝试了滑旱冰。 Last term, I tried roller skating __________ __________ __________ __________. 2. 昨天我在商店里遇到了我的老朋友。 I ______ my old friend in the shop ______ ______. 3. 她太累了，所以很早就上床睡觉了。 She was ______ tired ______ she went to bed early. 4. 我每天早晨花半小时练习口语。 I ________ half an hour ________ spoken English every morning. 5. 我们应该在学习和爱好之间保持平衡。 We should ________ ________ ________ between study and hobbies. 四、短文填空（每题1分，共5分） Last summer, I went to the beach with my family. We had a great time there. We 1.______ (swim) in the sea, played beach volleyball and enjoyed the sunshine. In the evening, we had a 2.______ (野餐) on the beach. We ate delicious food and 3.______ (drink) some juice. We also 4.______ (tell) stories and sang songs. It was really a 5.______ (难忘的) trip. I hope I can go there again next year. Integration & Assessment & Further study 一、用所给单词的适当形式填空（每题1分，共5分） 1. We should be ______ (care) when we do our homework. 2. There are many ______ (danger) animals in the forest. 3. He ______ (success) in passing the exam last week. 4. The ______ (develop) of our city is very fast. 5. We need to make a ______ (decide) about where to go for the holiday. 二、根据中文完成句子（每题2分，共10分） 1. 我们必须采取措施保护野生动物。 We must ______ ______ to protect wild animals. 2. 他对这次旅行感到很兴奋。 He is very ______ ______ this trip. 3. 他们正在为即将到来的考试做准备。 They are ______ ______ the coming exam. 4. 无论遇到什么困难，我们都不应该放弃。 ______ ______ what difficulties we meet, we shouldn't give up. 5. 我期待着收到你的来信。 I'm looking forward to ______ ______ you. 三、写作（15分） 假设你上周参加了一次学校组织的徒步旅行（a school hiking trip），请根据以下要点写一篇短文。 要点： 1. 旅行的时间、地点； 2. 旅行中做的事情； 3. 旅行的感受及收获。 要求： 1. 词数不少于80； 2. 内容包含要点，可适当发挥，使短文完整、流畅； 3. 文中不得出现真实的人名、校名等信息。 学科网（北京）股份有限公司 $$