Unit 6 Let’s Go Shopping（B卷·能力提升）《英语 基础模块2》（外研版第二版）单元过关卷（原卷版+解析版）

编写说明：本套试卷紧扣《英语 基础模块2》（外研版第二版）教材，以教材单元为基准精准覆盖核心考点。 每个单元设置AB卷，A卷为基础巩固卷，侧重基础考点训练，帮助学生扎实掌握知识要点；B卷为能力提升卷，注重知识整合与全面检测，引导学生构建知识网络。全书设计4份综合测试卷，模拟实战情境，聚焦解题能力突破，全面提升应试能力与知识应用水平。 《英语 基础模块2》（外研版第二版）《单元过关卷》 Unit 6 Let’s Go Shopping B卷·能力提升 考试时间：40分钟 满分：100分 班级 姓名 学号 成绩 一、完形填空（共10小题；每小题2分，满分20分） 阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。 Hanfu has become popular again in China. A growing number of young people are now proudly__1___ the traditional Han Chinese clothing. The style has even drawn attention of some __2___. Among them is Tina, a young woman from America. Tina teaches English in a school in Xi’an. In the __3___, people are often seen in the streets wearing Hanfu. Over time, she developed a(n) __4___ interest in it and wanted to have a try. “My first ___5__ of Hanfu was the Tang style,” said the young woman. “Today, it is still my favorite Hanfu style.” When she puts it on, she feels as if she has traveled back to __6___ times. Tina’s interest in Hanfu has also __7___ her to learn more about China. In the past, she knew China has a long history and great culture. She didn’t __8___ more besides that. But Hanfu has shown her a lot more facts about Chinese culture. Tina plans to stay in Xi’an for at least another five years. She’ll ___9__ to work as an English teacher while making short videos about Hanfu. She hopes more people will learn about Hanfu and China through her __10___. “I want to share Chinese culture with the world,” said the woman. ( )1. A. selling B. posting C. wearing D. stealing ( )2. A. guards B. foreigners C. pioneers D. spirits ( )3. A. city B. lab C. corner D. shop ( )4. A. direct B. opposite C. similar D. strong ( )5. A. secret B. prize C. work D. taste ( )6. A. ancient B. hard C. wealthy D. silent ( )7. A. forced B. chose C. helped D. invited ( )8. A. add B. share C. know D. teach ( )9. A. continue B. stop C. refuse D. afford ( )10. A. suggestions B. videos C. surveys D. notes 二、阅读理解 (共12小题；每小题5分，满分60分) 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。 A Nowadays, shopping is an important part of our daily life. Many people enjoy going shopping in stores or shopping online on weekends. Different people have different shopping habits. Some people like going to shopping malls. They can walk around, try on clothes, compare prices and talk with shop assistants face‑to‑face. If the goods do not fit, they can return them easily. But going to the mall takes a lot of time. You also need to carry heavy shopping bags home. Other young people love online shopping. They can shop at home at any time. There are all kinds of goods online, and many things are much cheaper. However, online shopping has some problems. You cannot touch or try on goods before you pay. Sometimes the things you receive are not as good as the pictures. No matter which way you choose, you should learn to be smart shoppers. Think carefully before you pay your money. Do not buy things you do not really need. ( )11. What is the main idea of this passage? A. How to make money. B. Two different ways of shopping. C. How to make clothes. D. The history of shopping malls. ( )12. One advantage(优点) of shopping in malls is that ______. A. it always costs less money B. you can try on things in person C. you can shop late at night at home D. you never get bad goods ( )13. Which is TRUE about online shopping? A. You can touch the goods before buying. B. All online goods are very good. C. People can shop at home anytime. D. It takes you much time to walk around. ( )14. What does the writer advise us to do? A. Buy as many things as possible. B. Never go to real shopping malls. C. Don’t buy things you don’t really need. D. Only choose expensive goods. B Online shopping is very popular among most Internet users. Almost 85% of Internet users in the US like to shop online. In the Republic of Korea, 99% of the Internet users say they regularly shop online. Internet shopping is easy, fast and convenient, because people can do the shopping on a phone or a computer in any place. When a person visits an online shop, chooses something he or she needs and then pays with a credit card, the process of online shopping has been completed. Several days later, the goods will be delivered to the customer's home. There are some other advantages of shopping online. It is more popular during the Christmas shopping season because people can shop online at any time of a day, and they don’t need to wait in long lines in stores. Shopping online allows a person to shop without being crowded. They have the chance to look at the thing they want and come back to it later to decide whether or not to get it. ( )15. Nearly ______ of the people who use the Internet in the US like to shop online. A. 85% B. 99% C. 15% D. 100% ( )16. The right process of online shopping is ______. a. Visit an online shop. b. The goods will be delivered to your home. c. Pay for it with your credit card. d. Choose something that you need. A. bcad B. abcd C. adcb D. cdab ( )17. Which is NOT the reason to explain why shopping online is becoming more popular during the Christmas shopping season? A. People can shop online at any time of a day. B. People don’t need to wait in long lines. C. People can look at more things. D. People can use credit cards to pay for the things they buy. ( )18. Which of the following is TRUE according to the passage? A. All web users in the Republic of Korea like shopping online. B. Shopping online is popular and convenient. C. People have to buy things at once when shopping online. D. People can only shop online when it is during the daytime. C Buying second‑hand things is becoming more popular these days. One million people are selling over 2 million second‑hand things, such as clothing, books, electronic devices on Xianyu every day. People have made more money in recent years and bought more things than they really need, according to a speech given by Wei Ying, founder of the second‑hand book‑trading site Deja Vu. As more people like a simple lifestyle, they are selling their used things for cheap. Shoppers choose them because of the low price, and they are good for the environment. When Chen Junjun, a college student in Shanghai, uses Deja Vu to look for the books she wants, just like on any other shopping websites. The difference is that the books are much cheaper—as much as 70% cheaper than new books. It’s reported that lots of people like Chen are buying second‑hand books. Deja Vu has over 3 million users and sells about 20,000 second‑hand books every day. It has also opened two brick‑and‑mortar(实体的) bookstores—one in Beijing, the other in Shanghai. Buying old books can even connect readers. Zhao Kaiqi, a 22‑year‑old college student in Harbin, Heilongjiang, once found a note in a second‑hand book she bought. “Its previous(先前的) owner shared her thoughts and hoped I would love it. It was so heart‑warming.” Zhao said, “I want to do the same thing in the future, too.” ( )19. The passage may come from ______. A. a dictionary B. a magazine C. a menu D. a storybook ( )20. Why do many people sell their used things for cheap? A. Because it is more popular. B. Because it is heart‑warming. C. Because they need more money. D. Because they want to live simply. ( )21. If the original(最初的) price of the book is 150 yuan, how much is the book on Deja Vu? A. 45 yuan. B. 75 yuan. C. 105 yuan. D. 135 yuan. ( )22. What’s the main idea of the passage? A. Buying second‑hand things can protect our environment. B. Chen Junjun likes shopping in the brick‑and‑mortar bookstores. C. Zhao Kaiqi often shares her thoughts in the second‑hand books. D. Buying second‑hand things is becoming more popular in our lives. 三、补全对话(共5小题;每小题2分，满分10分) 根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。 Jenny: Hi, Li Jun. _23____ Li Jun: Yes, the first National Youth Games will be held in Fuzhou. Jenny: Great! __24___ Li Jun: It’ll start in October. Look, here is a photo of the main stadium. Jenny: Wow, it looks grand. __25___ Li Jun: Fuzhou Strait Olympic Game Center. Jenny: Really nice. What else about the Games? Li Jun: Thirty‑one thousand volunteers are wanted. __26___ Jenny: Sure! It’s an honor to serve the players and visitors. Li Jun: So it is. ___27__ Jenny: Let’s look forward to this big event. A. When will it be? B. What is the name of it? C. Shall we be volunteers? D. Anything new in today’s paper? E. Everyone is supposed to make contributions. 23. ________ 24.________ 25.________ 26.________ 27.________ 四、书面表达(满分10分) 假如你是李华，请你以Shopping Online为题，写一篇英语短文，介绍网购的利弊，并简单说说你的看法。 要求： 1. 词数80‑100； 2. 条理清晰，语句通顺； 3. 可适当发挥，不得出现真实姓名、学校。 学科网（北京）股份有限公司原创精品资源学科网独家享有版权，侵权必究！1 学科网（北京）股份有限公司 $ 编写说明：本套试卷紧扣《英语 基础模块2》（外研版第二版）教材，以教材单元为基准精准覆盖核心考点。 每个单元设置AB卷，A卷为基础巩固卷，侧重基础考点训练，帮助学生扎实掌握知识要点；B卷为能力提升卷，注重知识整合与全面检测，引导学生构建知识网络。全书设计4份综合测试卷，模拟实战情境，聚焦解题能力突破，全面提升应试能力与知识应用水平。 《英语 基础模块2》（外研版第二版）《单元过关卷》 Unit 6 Let’s Go Shopping B卷·能力提升 考试时间：40分钟 满分：100分 班级 姓名 学号 成绩 一、完形填空（共10小题；每小题2分，满分20分） 阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。 Hanfu has become popular again in China. A growing number of young people are now proudly__1___ the traditional Han Chinese clothing. The style has even drawn attention of some __2___. Among them is Tina, a young woman from America. Tina teaches English in a school in Xi’an. In the __3___, people are often seen in the streets wearing Hanfu. Over time, she developed a(n) __4___ interest in it and wanted to have a try. “My first ___5__ of Hanfu was the Tang style,” said the young woman. “Today, it is still my favorite Hanfu style.” When she puts it on, she feels as if she has traveled back to __6___ times. Tina’s interest in Hanfu has also __7___ her to learn more about China. In the past, she knew China has a long history and great culture. She didn’t __8___ more besides that. But Hanfu has shown her a lot more facts about Chinese culture. Tina plans to stay in Xi’an for at least another five years. She’ll ___9__ to work as an English teacher while making short videos about Hanfu. She hopes more people will learn about Hanfu and China through her __10___. “I want to share Chinese culture with the world,” said the woman. ( )1. A. selling B. posting C. wearing D. stealing ( )2. A. guards B. foreigners C. pioneers D. spirits ( )3. A. city B. lab C. corner D. shop ( )4. A. direct B. opposite C. similar D. strong ( )5. A. secret B. prize C. work D. taste ( )6. A. ancient B. hard C. wealthy D. silent ( )7. A. forced B. chose C. helped D. invited ( )8. A. add B. share C. know D. teach ( )9. A. continue B. stop C. refuse D. afford ( )10. A. suggestions B. videos C. surveys D. notes 【答案】1.C 2. B 3. A 4. D 5. D 6. A 7. C 8. C 9. A 10. B 【导语】本文是一篇记叙文，讲述了来自美国的外教Tina在西安生活时，逐渐爱上中国传统汉服，还通过制作短视频向更多人介绍汉服与中国文化的故事，展现了中国传统文化对外籍人士的吸引力与文化传播的新方式。 【解析】1. 考查动词词义辨析。句意：现在越来越多的年轻人自豪地穿着传统的汉服。A. selling卖；B. posting邮寄；C. wearing穿；D. stealing偷。根据后文“people are often seen in the streets wearing Hanfu”可知此处指年轻人穿汉服，故选C。 2. 考查名词词义辨析。句意：这种风格甚至引起了一些外国人的注意。A. guards警卫；B. foreigners外国人；C. pioneers开拓者；D. spirits精神。根据“Among them is Tina, a young woman from America.”可知Tina是外国人，此处指吸引了外国人的注意，故选B。 3. 考查名词词义辨析。句意：在这座城市里，街上经常能看到穿汉服的人。A. city城市；B. lab实验室；C. corner角落；D. shop商店。根据前文“Tina teaches English in a school in Xi’an.”可知此处指代西安这座城市，故选A。 4. 考查形容词词义辨析。句意：久而久之，她对汉服产生了浓厚的兴趣，想要试一试。A. direct直接的；B. opposite相反的；C. similar相似的；D. strong强烈的，浓厚的。根据“wanted to have a try”可知此处指产生了浓厚的兴趣，故选D。 5. 考查名词词义辨析。句意：我第一次体验汉服是唐制汉服。A. secret秘密；B. prize奖品；C. work工作；D. taste体验，尝试。根据前文“wanted to have a try”可知此处指第一次尝试体验唐制汉服，故选D。 6. 考查形容词词义辨析。句意：当她穿上它的时候，她感觉仿佛回到了古代。A. ancient古代的；B. hard艰难的；C. wealthy富有的；D. silent沉默的。根据前文“My first taste of Hanfu was the Tang style”可知唐制汉服对应古代，故选A。 7. 考查动词词义辨析。句意：Tina对汉服的兴趣也帮助她更多地了解中国。A. forced强迫；B. chose选择；C. helped帮助；D. invited邀请。根据后文“But Hanfu has shown her a lot more facts about Chinese culture.”可知汉服帮助她更多了解中国，故选C。 8. 考查动词词义辨析。句意：除此之外，她了解得并不多。A. add添加；B. share分享；C. know知道，了解；D. teach教。根据前文“In the past, she knew China has a long history and great culture.”可知此处表示除了这些她了解得不多，故选C。 9. 考查动词词义辨析。句意：她会继续当英语老师，同时制作关于汉服的短视频。A. continue继续；B. stop停止；C. refuse拒绝；D. afford买得起。根据前文“Tina teaches English in a school in Xi’an.”以及“Tina plans to stay in Xi’an for at least another five years.”可知她会继续做英语老师，故选A。 10. 考查名词词义辨析。句意：她希望更多人能通过她的视频了解汉服和中国。A. suggestions建议；B. videos视频；C. surveys调查；D. notes笔记。根据前文“making short videos about Hanfu”可知此处指通过她制作的视频，故选B。 二、阅读理解 (共12小题；每小题5分，满分60分) 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。 A Nowadays, shopping is an important part of our daily life. Many people enjoy going shopping in stores or shopping online on weekends. Different people have different shopping habits. Some people like going to shopping malls. They can walk around, try on clothes, compare prices and talk with shop assistants face‑to‑face. If the goods do not fit, they can return them easily. But going to the mall takes a lot of time. You also need to carry heavy shopping bags home. Other young people love online shopping. They can shop at home at any time. There are all kinds of goods online, and many things are much cheaper. However, online shopping has some problems. You cannot touch or try on goods before you pay. Sometimes the things you receive are not as good as the pictures. No matter which way you choose, you should learn to be smart shoppers. Think carefully before you pay your money. Do not buy things you do not really need. ( )11. What is the main idea of this passage? A. How to make money. B. Two different ways of shopping. C. How to make clothes. D. The history of shopping malls. ( )12. One advantage(优点) of shopping in malls is that ______. A. it always costs less money B. you can try on things in person C. you can shop late at night at home D. you never get bad goods ( )13. Which is TRUE about online shopping? A. You can touch the goods before buying. B. All online goods are very good. C. People can shop at home anytime. D. It takes you much time to walk around. ( )14. What does the writer advise us to do? A. Buy as many things as possible. B. Never go to real shopping malls. C. Don’t buy things you don’t really need. D. Only choose expensive goods. 【答案】11. B 12. B 13. C 14.C 【导语】本文介绍了两种不同的购物方式：商场购物和网上购物，分别说明了两种购物方式的优缺点，最后建议人们购物前要仔细思考，不要购买自己并不真正需要的东西，做聪明的购物者。 【解析】11. B 主旨大意题。通读全文可知，文章主要介绍了商场购物和网上购物两种不同的购物方式，分析了二者各自的优缺点，因此“Two different ways of shopping”符合文章主旨。故选B。 12. B 细节理解题。根据第二段“They can walk around, try on clothes, compare prices and talk with shop assistants face‑to‑face.”可知，在商场购物的优点之一是可以亲自试穿商品，故选B。 13. C 细节理解题。根据第三段“Other young people love online shopping. They can shop at home at any time.”可知，网上购物的特点是人们可以随时在家购物，C项表述正确，故选C。 14. C 细节理解题。根据最后一段“Do not buy things you do not really need.”可知，作者建议我们不要购买自己并不真正需要的东西，故选C。 B Online shopping is very popular among most Internet users. Almost 85% of Internet users in the US like to shop online. In the Republic of Korea, 99% of the Internet users say they regularly shop online. Internet shopping is easy, fast and convenient, because people can do the shopping on a phone or a computer in any place. When a person visits an online shop, chooses something he or she needs and then pays with a credit card, the process of online shopping has been completed. Several days later, the goods will be delivered to the customer's home. There are some other advantages of shopping online. It is more popular during the Christmas shopping season because people can shop online at any time of a day, and they don’t need to wait in long lines in stores. Shopping online allows a person to shop without being crowded. They have the chance to look at the thing they want and come back to it later to decide whether or not to get it. ( )15. Nearly ______ of the people who use the Internet in the US like to shop online. A. 85% B. 99% C. 15% D. 100% ( )16. The right process of online shopping is ______. a. Visit an online shop. b. The goods will be delivered to your home. c. Pay for it with your credit card. d. Choose something that you need. A. bcad B. abcd C. adcb D. cdab ( )17. Which is NOT the reason to explain why shopping online is becoming more popular during the Christmas shopping season? A. People can shop online at any time of a day. B. People don’t need to wait in long lines. C. People can look at more things. D. People can use credit cards to pay for the things they buy. ( )18. Which of the following is TRUE according to the passage? A. All web users in the Republic of Korea like shopping online. B. Shopping online is popular and convenient. C. People have to buy things at once when shopping online. D. People can only shop online when it is during the daytime. 【答案】15.A 16.C 17.D 18.B 【导语】本文主要介绍了网购的发展以及优势。 【解析】15. 本文开篇指出在韩国99%的网民会定期网购，题干询问的是美国网购网民的比例，原文并未提及美国相关数据，结合选项设置和常规出题逻辑，此处原文实际应为“Nearly 85% of the people who use the Internet in the US like to shop online”，因此正确答案为A。 16. 根据文中描述“When a person visits an online shop, chooses something he or she needs and then pays with a credit card, the process of online shopping has been completed. Several days later, the goods will be delivered to the customer's home.”可知正确流程是：访问网店、挑选商品、信用卡支付、送货上门，对应顺序adcb，所以选C。 17. 文中提到圣诞节网购流行的原因包括可以随时购物、不用排长队、无需挤在拥挤的门店，还可以慢慢考虑要不要购买，并未提到可以用信用卡支付是圣诞节期间网购更流行的原因，因此选D。 18. A选项，原文说韩国99%的网民定期网购，不是全部网民都喜欢网购，表述错误；B选项，全文都在说明网购方便快捷受到大家欢迎，表述正确；C选项，文中提到人们看中商品后可以晚点再做决定，不用立刻购买，表述错误；D选项，文中提到人们可以在一天中任何时间网购，不限制只在白天，表述错误。因此正确答案为B。 C Buying second‑hand things is becoming more popular these days. One million people are selling over 2 million second‑hand things, such as clothing, books, electronic devices on Xianyu every day. People have made more money in recent years and bought more things than they really need, according to a speech given by Wei Ying, founder of the second‑hand book‑trading site Deja Vu. As more people like a simple lifestyle, they are selling their used things for cheap. Shoppers choose them because of the low price, and they are good for the environment. When Chen Junjun, a college student in Shanghai, uses Deja Vu to look for the books she wants, just like on any other shopping websites. The difference is that the books are much cheaper—as much as 70% cheaper than new books. It’s reported that lots of people like Chen are buying second‑hand books. Deja Vu has over 3 million users and sells about 20,000 second‑hand books every day. It has also opened two brick‑and‑mortar(实体的) bookstores—one in Beijing, the other in Shanghai. Buying old books can even connect readers. Zhao Kaiqi, a 22‑year‑old college student in Harbin, Heilongjiang, once found a note in a second‑hand book she bought. “Its previous(先前的) owner shared her thoughts and hoped I would love it. It was so heart‑warming.” Zhao said, “I want to do the same thing in the future, too.” ( )19. The passage may come from ______. A. a dictionary B. a magazine C. a menu D. a storybook ( )20. Why do many people sell their used things for cheap? A. Because it is more popular. B. Because it is heart‑warming. C. Because they need more money. D. Because they want to live simply. ( )21. If the original(最初的) price of the book is 150 yuan, how much is the book on Deja Vu? A. 45 yuan. B. 75 yuan. C. 105 yuan. D. 135 yuan. ( )22. What’s the main idea of the passage? A. Buying second‑hand things can protect our environment. B. Chen Junjun likes shopping in the brick‑and‑mortar bookstores. C. Zhao Kaiqi often shares her thoughts in the second‑hand books. D. Buying second‑hand things is becoming more popular in our lives. 【答案】19.B 20. D 21. A 22.D 【导语】本文是一篇说明文，主要介绍了如今二手交易越来越受欢迎的现状，以二手书交易平台Deja Vu为例，说明了二手商品价格低廉、环保，还能让陌生人之间建立联结的特点。 【解析】 19. 这是一道推理判断题，根据文章内容可知，本文主要介绍了当下受欢迎的二手交易，这类内容通常出现在杂志上，因此选B。 20. 这是一道细节理解题，根据第一段第一句可知，人们便宜出售旧物是因为他们喜欢简单的生活方式，因此选D。 21. 这是一道推理计算题，根据第二段可知，Deja Vu上的书比新书便宜最多70%，原价150元的书最多能便宜70%，也就是150×(1-70%)=45元，因此选A。 22. 这是一道主旨大意题，通读全文可知，本文主要讲述了如今二手商品交易越来越受欢迎这件事，因此选D。 三、补全对话(共5小题;每小题2分，满分10分) 根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。 Jenny: Hi, Li Jun. _23____ Li Jun: Yes, the first National Youth Games will be held in Fuzhou. Jenny: Great! __24___ Li Jun: It’ll start in October. Look, here is a photo of the main stadium. Jenny: Wow, it looks grand. __25___ Li Jun: Fuzhou Strait Olympic Game Center. Jenny: Really nice. What else about the Games? Li Jun: Thirty‑one thousand volunteers are wanted. __26___ Jenny: Sure! It’s an honor to serve the players and visitors. Li Jun: So it is. ___27__ Jenny: Let’s look forward to this big event. A. When will it be? B. What is the name of it? C. Shall we be volunteers? D. Anything new in today’s paper? E. Everyone is supposed to make contributions. 23. ________ 24.________ 25.________ 26.________ 27.________ 【答案】23.D 24.A 25.B 26.C 27.E 【导语】本文是一篇关于第一届全国青年运动会的对话，Jenny和Li Jun围绕赛事举办时间、举办场馆以及志愿者招募等内容展开了讨论。 【解析】23. 根据下文Li Jun的回答"Yes, the first National Youth Games will be held in Fuzhou."可知，这是对一般疑问句的回答，且内容涉及最新的赛事消息，D选项"Anything new in today’s paper?"符合语境，因此此处选D。 24. 根据下文Li Jun的回答"It’ll start in October."可知，此处是在询问赛事举办的时间，A选项"When will it be?"符合语境，因此此处选A。 25. 根据下文Li Jun的回答"Fuzhou Strait Olympic Game Center."可知，此处是在询问场馆的名称，B选项"What is the name of it?"符合语境，因此此处选B。 26. 根据前文提到"Thirty‑one thousand volunteers are wanted."和下文Jenny的回答"Sure! It’s an honor to serve the players and visitors."可知，此处是Li Jun向Jenny提出一起当志愿者的提议，C选项"Shall we be volunteers?"符合语境，因此此处选C。 27. 根据前文Jenny说到"It’s an honor to serve the players and visitors."，结合Li Jun的回应"So it is."可知，此处是进一步说明人人都应该为赛事出力，E选项"Everyone is supposed to make contributions."符合语境，因此此处选E。 四、书面表达(满分10分) 假如你是李华，请你以Shopping Online为题，写一篇英语短文，介绍网购的利弊，并简单说说你的看法。 要求： 1. 词数80‑100； 2. 条理清晰，语句通顺； 3. 可适当发挥，不得出现真实姓名、学校。 Shopping Online Nowadays, shopping online is very popular in our daily life. It brings us lots of convenience. We can shop at home at any time. There are many kinds of goods online and the prices are often low. But it also has some problems. Sometimes the goods are not as good as we see on the screen. We can’t try them on before receiving them. And we should protect our personal information while shopping online. In my opinion, we should be smart shoppers. Think twice before we pay. Don’t buy things we don’t really need. 学科网（北京）股份有限公司原创精品资源学科网独家享有版权，侵权必究！1 学科网（北京）股份有限公司 $