河北中考专题 07 词汇填空精讲专练（盲填）-冲刺2025年中考英语二轮复习重难题型精讲精练（河北专用）

中考专题 短文填空之适当形式填空 （盲填） 分析考情·确定目标 探究考法·突破考点 运用策略·逐步提升 目录 真题操练·提升能力 2 分析考情·确定目标 题型 考频 真题分析 考查目的 命题预测 短文 填空 5年5考 1.从样卷中能够看出，该题包含 2 个名词(其中 1 个名词变为复数，1 个变为名词)，7道考查动词的题目(5 个考查时态，1 个考查被动语态，1 个考查非谓语动词)、1 个副词(由形容词变为副词)、1 个数词(基数词变为序数词)以及 4 个盲填(2 个介词、1 个冠词、1 个连词) 2. 虽然整体沿用往年的考查方式但对动词的考査题目增多，从原来的2 道变为现在的 7 道。3. 题目要求的所填词数也由原来的每空一词，变为现在每空一词和单词正确形式相结合。文本篇幅更长，题目难度增大。 由“用所给词的适当形式填空”加“盲填”组成。考点主要集中在动词、名词、形容词、副词、代词、数词及动词短语上,名词的考查重点是复数变化及词性转化,动词及动词短语的考查重点是时态、语态和非谓语的变化,形容词、副词、数词、代词的考查重点在词性转化上,盲填主要考查虚词。 在具体的语境中灵活运用词汇知识和语法知识的能力 4 探究考法·突破考点 The Internet has become _____ important part of our daily life. It is widely used in many fields, such as education, business, and entertainment. _____ the Internet, we can get information quickly and easily. However, there are also some problems that come with it. 虚词的使用: 盲填部分主要考查虚词，如连词、介词、冠词等。这些虚词在语篇中起到连接和修饰的作用。 考查内容 an With In China, most students stay in the same classroom to have different lessons. When the school bell rings , students wait for their teachers quietly before starting their lessons. Students put their school things in the classrooms. __________, in America, things are quite different. For different subjects, students are supposed to go and find the right classrooms. They have to change their classrooms and they usually put their things __________ the lockers (储物柜) out of the classrooms. 语篇理解和词汇运用：盲填部分不仅考查词汇的拼写，还考查词汇在特定语境下的正确使用。考生需要在理解短文整体内容的基础上，结合上下文语境，灵活运用词汇和语法知识进行填空。 考查内容 However in 运用策略·逐步提升 冠词的用法 a和an 的区别 a university（一所大学），university虽以元音字母u开头，但发音为/ju:/，以辅音音素开头，故用a。 an hour（一小时），hour虽以辅音字母h开头，但发音为/aʊə(r)/，以元音音素开头，故用an。 1 用于某些固定搭配中 have a look（看一看），take a walk（散步）， at an early age（在很小的时候） 3 表示“一”的概念 a cat，a little boy, an apple, an hour 2 不定冠词a/an的用法 1. 对冠词的考查 特指某个事物或人 the book on the table 特指桌子上的那本书。 the man in the car 特指车里的那个人。 特指上文提到的事物 I saw a dog. The dog was barking. 第一次提到用不定冠词a，第二次特指用the。 特指独一无二的事物 the sun（太阳），the moon（月亮），the earth（地球），这些独一无二的事物前都用the。 01 02 03 定冠词the的特指用法 1. 对冠词的考查 the rich（富人），the poor（穷人），the young，the old。 用于表示特定类别 play the piano，play the violin，乐器前通常用the。 用于乐器前 go to the cinema，in the morning，这些固定搭配中都用the。 用于某些固定搭配中 1. 对冠词的考查 定冠词the的特指用法 1. —Excuse me, Is there ________ post office? —Yes, it’s behind ________ bank. 2. —What do you think of ________ movie we watched yesterday? —It’s ________ exciting one. 1. 对冠词的考查专练 a the the an 介词的基本用法和介词的固定搭配 常见地点介词 in 表示在较大的空间范围内，如 in the city。 on 表示在某物体的表面/在…边，如 on the wall。 at 表示在具体的地点或小地方，如 at the door。 beside 表示在……旁边，如 beside the river。 near 表示在……附近，如 near the supermarket in front of /behind表示在......前面/后面， 如 in front of/behind me。 next to 表示“在……旁边”。 above/over 表示“在……上方”。 地点介词的拓展 表示地点 2. 对介词的考查 The library is __________ (1) the school and the post office. When you enter the library, you will see a large desk ____________ (2) the entrance. The books _________ (3) the shelf are arranged by category. If you look _____________ (4) the window, you can see a beautiful garden ________________ (5) the library. 1. 对方位介词的考查专练 between at on through outside in front of in 表示在一段时间内或在……之后，如 in the morning。 常见时间介词 by 表示到……为止，如 by next week（到下周为止）。 时间介词的拓展 表示时间 2. 对介词的考查 on 表示在具体日期，如 on Monday。 at 表示在具体时刻，如 at 8 o'clock。 since 表示从……以来，如 since last year（从去年以来）。 My birthday is ______ (1) June 15th. Every year, my family celebrates it ______ (2) the evening. Last year, we had a party ______ (3) 7:00 PM. My friends arrived ______ (4) time, and we played games ______ (5) midnight. 1. 对时间介词的考查专练 on in at on until 常见方向介词 to 表示到……，go to the library towards 表示朝……方向，walk towards the north from 表示从……，come from China 方向介词的拓展 into 表示进入， walk into the room（走进房间）。 out of 表示从……出来，come out of the building（从大楼出来）。 表示方向 2. 对介词的考查 by 表示通过……方式，如 by using this method（通过这种方法）。 by 表示到……为止，如 by next week（到下周为止）。 with 表示用……，如 with a knife（用刀）。 without 表示没有……，如 without money（没有钱）。 in 表示以某种方式，in the way （以这种方法）。 表示方式方法 2. 对介词的考查 My birthday is ______ (1) June 15th. Every year, my family celebrates it ______ (2) the evening. Last year, we had a party ______ (3) 7:00 PM. My friends arrived ______ (4) time, and we played games ______ (5) midnight. 1. 对方向、方式介词的考查专练 on in at on until Last summer, my family and I went on a trip 1_______ train. We climbed 2 _______ the mountains and saw beautiful scenery along the way. The train ride was very comfortable, and we enjoyed the journey very much. We also met foreign friendly people ________ the train. They shared their travel stories ______ us____ English, and we learned a lot about different places ______ each other. 1. 对时间介词的考查专练 by onto on with in from look at 表示看，如 look at the blackboard。 listen to 表示听，如 listen to the music。 care about 表示关心，如 care about the environment。 look for 表示寻找，如 He is looking for his lost keys. ask for 表示请求，如 She asked for some water. 常见动词介词搭配 depend on 表示依赖，如 depend on your parents。 give up 表示放弃，如 give up smoking）。 turn on 表示打开，如 turn on the light。 动词介词搭配的拓展 2. 对介词的考查 be interested in 表示对……感兴趣，如 be interested in reading。 be good at 表示擅长，如 be good at swimming。 be different from 表示与……不同，如 be different from others。 常见形容词介词搭配 be similar to 表示与……相似，如 be similar to my friend。 be afraid of 表示害怕，如 be afraid of the dark。 be proud of 表示为……感到骄傲，如 be proud of your achievements。 形容词介词搭配的拓展 2. 对介词的考查 常见名词介词搭配 the key to 表示……的钥匙，如 the key to the door。 the answer to 表示……的答案，如 the answer to the question the reason for 表示……的原因，如 the reason for his absence。 名词介词搭配的拓展 the way to 表示……的方法，如 the way to success。 the solution to 表示……的解决办法，如 the solution to the conflict。 the secret to 表示……的秘密，如 the secret to happiness。 2. 对介词的考查 My best friend is Lily. She is very kind 1_____ everyone. She always helps me 2______ my studies. We often spend time together. We like to read books 3 ______the library. Sometimes we play sports at the park. Lily is good 4______ playing the piano. She practices it every day. She says that music can bring happiness 5______ people. 2. 对介词的考查专练 to with in at to 连词的基本用法 主要考查点： 逻辑关系的判断： 要求考生根据上下文的语义和句子结构，准确判断句子之间的逻辑关系，从而选择合适的连词。 2. 对连词的考查 并列连词用于连接并列关系的词、短语或句子，表示对等关系。常见的并列连词有and、or、but、so等。 并列连词还可表示递进、选择、转折和因果等关系，如“not only...but also...”表示递进。 定义与分类 中考常考查学生对并列关系的判断，能否根据上下文选择正确的并列连词。 还会考查并列连词的固定搭配，如“both...and...”等，学生需掌握其用法。 部分并列连词在语义上有细微差别，如“and”和“or”在某些语境下易混淆。 难点与易错点 并列连词 2. 对连词的考查 中考考查重点 01 从属连词用于引导从句，使主句和从句形成主从关系。常见的从属连词有because、if、when、although等。 这些连词分别引导原因状语从句、条件状语从句、时间状语从句和让步状语从句。 定义与分类 02 中考常考查学生能否根据句子结构判断从句类型，并选择正确的从属连词。 还会考查从属连词在不同语境中的语义理解。 中考考查重点 03 从属连词引导的从句类型较多，如条件状语从句、原因状语从句等，学生容易混淆。 部分从属连词在不同语境中的语义较为复杂，如“because”和“so”的不同用法，学生理解起来有一定难度。 难点与易错点 从属连词 2. 对连词的考查 Last weekend, I went to the library to study for my upcoming exams. I planned to stay there for a few hours, _____ I didn’t expect to meet an old friend there. ______________ I was reading a book, she came up to me and greeted me warmly. We talked for a while, _____I realized it was getting late. _______ I wanted to stay longer, I decided to leave because I had a lot of homework to do. __________ I left the library, I promised her that we would have lunch together soon. 3. 对连的考查专练 but When/While and Though Before 真题操练·提升能力 I’m a 15-year-old middle school student. I’m in the 1. ______ (nine) grade this year. Though I 2. ________ (learn) English since I was in Grade Three, I can’t do well in English tests. So yesterday I asked my English teacher, Miss Lin, for some advice on how to be a 3. ______ (success) English learner. Here’s what she 4. _______ (tell) me. First, create an interest 5. ______ English. This is very important. There’s a saying, “Interest is the best teacher.” If you are interested in English, your brain will be more active and it is also much 6. ______ (easy) for you to pay attention to it for a long time. You can connect English 7. ________ something you are interested in, like music or sports. You can also listen to English songs or watch sports programs in English. Sometimes you can read English magazines. These 8. ________ (help) you memory more English words and you won’t get 9. _________ (bore) of English. Second, practice and learn 10. ______ mistakes. Remember, “Use it or lose it!” Even if you learn some words and sentences well, you will forget them 11. ______ you use them. Practice makes perfect. Never be afraid of making mistakes. Third, develop your study skills. It is not enough to just study hard. You have to know how 12. _______ (study) and find out the best ways to learn English well. The basic way is to take notes by 13. _____ (write) down key words or by drawing mind maps. You have to find some time to review what you have learned. Miss Lin is sure that as long as I learn 14. _____ (wise), I can learn English well. I should believe in 15. __________ (I). So I will do as my teacher said and make greater progress. 1.ninth 2. have learnt 3. successful 4. told 5. in 6. easier 7. with 8. will help 9. bored 10. from 11. unless 12. to study 13. writing 14. wisely 15. myself Have a bright future! $$ 专题07 短文填空之适当形式填空 （盲填) 分析考情·确定目标 题型 考查频次 真题分析 考查目的 命题预测 短文 填空 5年5考 由“用所给词的适当形式填空”加“盲填”组成。考点主要集中在动词、名词、形容词、副词、代词、数词及动词短语上,名词的考查重点是复数变化及词性转化,动词及动词短语的考查重点是时态、语态和非谓语的变化,形容词、副词、数词、代词的考查重点在词性转化上,盲填主要考查虚词。 在具体的语境中灵活运用词汇知识和语法知识的能力 1.从样卷中能够看出，该题包含 2 个名词(其中 1 个名词变为复数，1 个变为名词)，7道考查动词的题目(5 个考查时态，1 个考查被动语态，1 个考查非谓语动词)、1 个副词(由形容词变为副词)、1 个数词(基数词变为序数词)以及 4 个盲填(2 个介词、1 个冠词、1 个连词) 2. 虽然整体沿用往年的考查方式但对动词的考査题目增多，从原来的2 道变为现在的 7 道。3. 题目要求的所填词数也由原来的每空一词，变为现在每空一词和单词正确形式相结合。文本篇幅更长，题目难度增大。 被动语态 探究考法·突破考点 设题内容 虚词的使用: 盲填部分主要考查虚词，如连词、介词、冠词等。这些虚词在语篇中起到连接和修饰的作用。 The Internet has become _____ important part of our daily life. It is widely used in many fields, such as education, business, and entertainment. _____ the Internet, we can get information quickly and easily. However, there are also some problems that come with it. 语篇理解和词汇运用：盲填部分不仅考查词汇的拼写，还考查词汇在特定语境下的正确使用。考生需要在理解短文整体内容的基础上，结合上下文语境，灵活运用词汇和语法知识进行填空。 In China, most students stay in the same classroom to have different lessons. When the school bell rings , students wait for their teachers quietly before starting their lessons. Students put their school things in the classrooms. __________, in America, things are quite different. For different subjects, students are supposed to go and find the right classrooms. They have to change their classrooms and they usually put their things __________ the lockers (储物柜) out of the classrooms. 运用策略·逐步提升 冠词的用法 a和an 的区别 a university（一所大学），university虽以元音字母u开头，但发音为/ju:/，以辅音音素开头，故用a。 an hour（一小时），hour虽以辅音字母h开头，但发音为/aʊə(r)/，以元音音素开头，故用an。 定冠词the的特指用法 特指某个事物或人 the book on the table特指桌子上的那本书。 the man in the car特指车里的那个人。 特指上文提到的事物 I saw a dog. The dog was barking. 第一次提到用不定冠词a，第二次特指用the。 特指独一无二的事物 the sun（太阳），the moon（月亮），the earth（地球），这些独一无二的事物前都用the。 用于表示特定类别 the rich（富人），the poor（穷人），the young，the old。 用于乐器前 play the piano，play the violin，乐器前通常用the。 用于某些固定搭配中 go to the cinema，in the morning，这些固定搭配中都用the。 对冠词的考查专练 1. —Excuse me, Is there ________ post office? —Yes, it’s behind ________ bank. 2. —What do you think of ________ movie we watched yesterday? —It’s ________ exciting one. 介词的基本用法和介词的固定搭配 考查内容 · 地点介词 in 表示在较大的空间范围内，如 in the city。 on 表示在某物体的表面/在…边，如 on the wall。 at 表示在具体的地点或小地方，如 at the door。 beside 表示在……旁边，如 beside the river。 near 表示在……附近，如 near the supermarket in front of /behind表示在......前面/后面， 如 in front of/behind me。 next to 表示“在……旁边”。 above/over 表示“在……上方”。 练习： The library is __________ (1) the school and the post office. When you enter the library, you will see a large desk ____________ (2) the entrance. The books _________ (3) the shelf are arranged by category. If you look _____________ (4) the window, you can see a beautiful garden ________________ (5) the library. · 时间介词 in 表示在一段时间内或在……之后，如 in the morning。 on 表示在具体日期，如 on Monday。 at 表示在具体时刻，如 at 8 o'clock。 by 表示到……为止，如 by next week（到下周为止）。 since 表示从……以来，如 since last year（从去年以来）。 练习： My birthday is ______ (1) June 15th. Every year, my family celebrates it ______ (2) the evening. Last year, we had a party ______ (3) 7:00 PM. My friends arrived ______ (4) time, and we played games ______ (5) midnight. · 方向介词 to 表示到……，go to the library towards 表示朝……方向，walk towards the north from 表示从……，come from China into 表示进入， walk into the room（走进房间）。 out of 表示从……出来，come out of the building（从大楼出来）。 · 方位介词 by 表示通过……方式，如 by using this method（通过这种方法）。 by 表示到……为止，如 by next week（到下周为止）。 with 表示用……，如 with a knife（用刀）。 without 表示没有……，如 without money（没有钱）。 in 表示以某种方式，in the way （以这种方法） 练习： My birthday is ______ (1) June 15th. Every year, my family celebrates it ______ (2) the evening. Last year, we had a party ______ (3) 7:00 PM. My friends arrived ______ (4) time, and we played games ______ (5) midnight. 介词综合练习： Last summer, my family and I went on a trip 1_______ train. We climbed 2 _______ the mountains and saw beautiful scenery along the way. The train ride was very comfortable, and we enjoyed the journey very much. We also met foreign friendly people ________ the train. They shared their travel stories ______ us____ English, and we learned a lot about different places ______ each other. · 介词固定搭配 常见动词介词搭配 look at 表示看，如 look at the blackboard。 listen to 表示听，如 listen to the music。 care about 表示关心，如 care about the environment。 look for 表示寻找，如 He is looking for his lost keys. ask for 表示请求，如 She asked for some water. depend on 表示依赖，如 depend on your parents。 give up 表示放弃，如 give up smoking）。 turn on 表示打开，如 turn on the light。 常见形容词介词搭配 be interested in 表示对……感兴趣，如 be interested in reading。 be good at 表示擅长，如 be good at swimming。 be different from 表示与……不同，如 be different from others 形容词介词搭配的拓展 be similar to 表示与……相似，如 be similar to my friend。 be afraid of 表示害怕，如 be afraid of the dark。 be proud of 表示为……感到骄傲，如 be proud of your achievements。 常见名词介词搭配 the key to 表示……的钥匙，如 the key to the door。 the answer to 表示……的答案，如 the answer to the question the reason for 表示……的原因，如 the reason for his absence。 the way to 表示……的方法，如 the way to success。 the solution to 表示……的解决办法，如 the solution to the conflict。 the secret to 表示……的秘密，如 the secret to happiness。 练习： My best friend is Lily. She is very kind 1_____ everyone. She always helps me 2______ my studies. We often spend time together. We like to read books 3 ______the library. Sometimes we play sports at the park. Lily is good 4______ playing the piano. She practices it every day. She says that music can bring happiness 5______ people. 连词的基本用法 · 并列连词 定义与分类 并列连词用于连接并列关系的词、短语或句子，表示对等关系。常见的并列连词有and、or、but、so等。 并列连词还可表示递进、选择、转折和因果等关系，如“not only...but also...”表示递进。 中考考查重点 中考常考查学生对并列关系的判断，能否根据上下文选择正确的并列连词。 还会考查并列连词的固定搭配，如“both...and...”等，学生需掌握其用法。 难点与易错点 部分并列连词在语义上有细微差别，如“and”和“or”在某些语境下易混淆。 · 从属连词 定义与分类 从属连词用于引导从句，使主句和从句形成主从关系。常见的从属连词有because、if、when、although等。 这些连词分别引导原因状语从句、条件状语从句、时间状语从句和让步状语从句。 中考考查重点 中考常考查学生能否根据句子结构判断从句类型，并选择正确的从属连词。 还会考查从属连词在不同语境中的语义理解。 难点与易错点 从属连词引导的从句类型较多，如条件状语从句、原因状语从句等，学生容易混淆。 部分从属连词在不同语境中的语义较为复杂，如“because”和“so”的不同用法，学生理解起来有一定难度。 Last weekend, I went to the library to study for my upcoming exams. I planned to stay there for a few hours, _____ I didn’t expect to meet an old friend there. ______________ I was reading a book, she came up to me and greeted me warmly. We talked for a while, _____I realized it was getting late. _______ I wanted to stay longer, I decided to leave because I had a lot of homework to do. __________ I left the library, I promised her that we would have lunch together soon. 真题操练·提升能力 I’m a 15-year-old middle school student. I’m in the 1. ______ (nine) grade this year. Though I 2. ________ (learn) English since I was in Grade Three, I can’t do well in English tests. So yesterday I asked my English teacher, Miss Lin, for some advice on how to be a 3. ______ (success) English learner. Here’s what she 4. _______ (tell) me. First, create an interest 5. ______ English. This is very important. There’s a saying, “Interest is the best teacher.” If you are interested in English, your brain will be more active and it is also much 6. ______ (easy) for you to pay attention to it for a long time. You can connect English 7. ________ something you are interested in, like music or sports. You can also listen to English songs or watch sports programs in English. Sometimes you can read English magazines. These 8. ________ (help) you memory more English words and you won’t get 9. _________ (bore) of English. Second, practice and learn 10. ______ mistakes. Remember, “Use it or lose it!” Even if you learn some words and sentences well, you will forget them 11. ______ you use them. Practice makes perfect. Never be afraid of making mistakes. Third, develop your study skills. It is not enough to just study hard. You have to know how 12. _______ (study) and find out the best ways to learn English well. The basic way is to take notes by 13. _____ (write) down key words or by drawing mind maps. You have to find some time to review what you have learned. Miss Lin is sure that as long as I learn 14. _____ (wise), I can learn English well. I should believe in 15. __________ (I). So I will do as my teacher said and make greater progress. 学科网（北京）股份有限公司 $$ 专题07 短文填空之适当形式填空 （盲填) （一） Hi David, I 1. _______(find) out that my classmates often stay up late to do extra 2. ________ (exercise) to improve their study. I once did the same, but it made me 3. _________ (sleep) the next day and couldn't focus during classes. However, if I stop doing so, I 4. ________ (feel) like I'm falling behind soon. What should I do? Sarah Hi Sarah, I don't think it is healthy. Getting enough sleep is so important to study well and keep healthy. You could call 5. _______ your friends are doing “burning the candle at both 6. ________ (end)”. Staying up late to study more might get your friends ahead at first, but it will only lead 7. ________ tiredness later. If you try to do the same as 8. _________(they), you're going to be too tired in class and fall behind too. So, studying the way that 9. _________ (work) for you, making sure 10. _________ (have) a balance between rest and work. You may need to stay up late 11. _________(one) in a while to get all of your work done, but you should never make it into 12. ________ habit. Getting enough sleep and using your time well is always 13. ________ (good) than working too hard and getting too tired. There is another famous 14. __________(say), “You can't pour from an empty cup." Get enough sleep and study well and you won't be 15. _______ any danger of falling behind. David 答案： 1.found 2. exercises 3. sleepy 4. will feel 5. what 6.ends 7. to 8. them 9. works 10. to have 11. once 12. a 13. better 14. saying 15. in （二） In September, at the RCF Experimental School in Beijing, Grade 8 students put _______ a cool biology show on the __________(five) floor of the lab building. They showed the fun biology models and ____________(painting) they made. Some painted different body systems on T-shirts, __________ others made models of plant cells and human organs using different materials. “When autumn __________ (come), many people catch a cold," said 14-year-old Liu Huanzhen, “This made _________(I) want to make a model of the lungs. Liu loves the art of rolling paper(折纸). So, he decided to make ________ lung model this way. He used different colors _________ (show) the main parts of the lungs. Carefully rolling and shaping the paper, he then glued the pieces to a piece of cardboard(硬纸板). “Although it was quite difficult, the results __________ (turn) out to be great,” Liu said. “I was very happy while __________(work) on it, and now I can remember the parts of the lungs _________ (well).” This fun __________ (activity) has helped students understand things more easily.” The digestive(消化的) system on a'T-shirt __________(clear) shows where it is in the human body," said 14-year-old Yang Yuyan. “The event lets students see how cool biology is. It may make them want to learn more ___________ it," said their biology teacher, Mr Li. “I’m sure biology _________(become) more and more popular with students in the future.” 答案： 1. on 2. fifth 3. paintings 4. while/and 5. comes 6.me 7. a 8. to show 9. turned 10. working 11.better 12. activity 13. clearly 14. about 15. will become (三) Fish in space for the 1.________(one) time. In a space study on zebrafish, Chinese scientists have set 2.________ new record. They successfully got four zebrafish 3.________ (live) and grow in a closed water world. The zebrafish went to China's space station on the Shenzhou XVII spaceship on April 25. Since then, they 4.__________ (live) in a closed fish tank with some plants. The fish grew up and had 5.____________(baby) in 43 days. In their special closed environment, the plants 6._________(make) air for the fish and the fish's waste gave the plants food. The scientists gave the fish food 7.___________ a special needle(针管). Such a closed-loop ecosystem is important for future studies in space. It 8.________ (mean) that plants and animals can live in space more 9.__________(simple) and easily. The scientists also found that the zebrafish acted more differently than on Earth. For example, they often swam 10.________ their back. The low gravity in space is a big reason. On Earth, everything 11._________(pull) to Earth's center by gravity, and animals can find 12._________(they) way easily. Gravity also makes their bodies work 13._________(hard) and become stronger, said The Conversation. Humans and zebrafish share 70 percent of the same genes (基因). So the new finding 14.___________ (help) scientists better understand human 15. __________(healthy) in the future. 答案： 1. first 2. a 3. to live 4. have lived 5.babies 6. made 7. through 8. means 9. simply 10. on 11. is pulled 12. their 13. harder 14. will help 15. health 学科网（北京）股份有限公司 $$