Unit 2 【单元测试 · 基础卷】-2024-2025学年高一英语单元速记•巧练（人教版2019必修第二册）

Unit 2【单元测试 · 基础卷】 1． .单词拼写（10分） 1．We all need to take measures to (减少) our carbon footprint. 2．The tiger is chasing two (鹿)． 3．Tom was bitten by an (昆虫) in the forest. 4．Her children are most popular in the (附近的地方)． 5．His success was largely (因为) his hard work. 6．After many years, this coastal area was finally named a national wildlife (保护区) last year. 7．Though having lived abroad for years, many Chinese still (遵循) the traditional customs. 8．In recent years, the African elephants have been (袭击) illegally and their habitats are getting limited. 9.His purpose was to make a (利益) by improving the company's performance. 10．Please (提醒) me of the date of the meeting. 1．reduce　2.deer　3.insect　4.neighbourhood　5.due to 6．reserve　7.observe　8.attacked　9.profit　10.remind 二． 单句语法填空1.（10分） 1.Kate heard a man's voice in the background, but she couldn't make ________ what he was saying. 2.In these places patients can go to be near nature during their ________ (recover)． 3.In hospital she'll be under ________ (observe) all the time. 4.We shall never forget the ________ (beautiful) of that lake. 5.The act of selling ________ (illegal) or without permission isn't allowed. 6.The disease has spread at an ________ (alarm) speed. 7.It turns out that just looking at green, growing things can reduce stress, lower blood ________ (press), and put people into a better mood (情绪). 8.He may take a ________ (shoot) himself when it would be better to pass the ball to a teammate. 9.The new rules will become _______________ (effect) in the next few days. 10.Was this really the _______________ (intend) result? 1.out 2.recovery 3.observation 4.beauty 5.illegally 6.alarming 7.have been changed 8.awareness 9.existence 10.On 11.over 三． 单句语法填空2.（10分） 1. However, Conille insisted that dialogue could only take place if the gang leaders stopped engaging in_____________(legal) activities.  2. China's fourth panda census, released in 2015, showed that 22 of the 33 groups of wild pandas found in the census faced the danger of ______________(extinct). 3. The CDC found the situation ___________(alarm) because dengue transmission peaks in summer when it's hot and humid, and the record-breaking numbers were reported during dengue low season. 4. The three cities' housing markets have seen evident __________(recover) in both new and pre-owned home segments, said Chen Wenjing, director of research with the China Index Academy. 5.  Although these high-tech export controls may seem ______________(profit) in the short term, they are essentially self-imposed shackles. 6. He engages theater actors to don motion capture suits and fully embody the scenes, ensuring that the animation accurately conveys the_____________( intend) emotions. 7. Clement Antonio, parliamentary secretary said one of the country's most pressing challenges today is climate change, as rising sea levels and increasingly severe storms _____________(threat) their very existence. 8. Accordingly, China has proposed to help build a ______________(harmony) world of lasting peace and common prosperity. 9. By showcasing their daily interactions and ____________(emotion) depth, the show aims to resonate with viewers, spread positivity, and unveil the simple yet profound joys of life. 10. Given the pastoral tradition of Liao and its recurring wars with their neighbors, it's not ______________(usual) for a Khitan husband to be away from home for extended periods of time.  illegal, extinction,alarming,recovery,profitable, intended,threaten,harmonious,emotional, unusual 四．选词填空。（8分） stir up, search for, cut down, on average, left...behind, watched over, dying out, day and night, am concerned about, on earth 1.If more trees are 　　　　　　, the environment will become even worse.  2.Students who are absent from school are concerned about getting　　　　　　.  3.Dozens of doctors and nurses have been working 　　　　　　 for weeks.  4.To 　　　　　　 students' interest in　traditional Chinese customs, we held a wide range of activities.  5.—What can AI bring for us　　　　　　?  —You see, it can bring much convenience for our life. Of course, it also has some disadvantages. 6.Right now, the deer are being treated and ____________ carefully by many volunteers. 7.I wonder how many elephants are killed ____________ every day according to the data. 8.I ____________ the African elephants, so I wonder what you know about them. 9.Our planet’s wild life is ___________ at a very fast rate and we must act now to solve the problem. 10.The whole research team got up early so as to ____________ wild birds hiding in the forest. 1.cut down　2.left behind　3.day and night　4.stir up　5.on earth 6. watched over 7. on average 8. am concerned about 9.dying out 10. search fo 五．写作素材翻译（10分） 1. 很多野生动物面临着灭绝的危险，因为它们的生存环境发生了巨大的变化。（extinction） ____________________________________________________________________ 2. 只有我们人类采取一系列有效的措施，野生动物才能得到保护。（only+倒装; take ...measures; preserve） ____________________________________________________________________ 3. 越来越多的树被砍伐。这就是越来越多的鸟正在逐渐消失的原因。（this is why...） ____________________________________________________________________ 4. 通过参与这次活动，我认识到了合作的重要性。（aware; significance） ____________________________________________________________________ 5. 事实证明，看绿色的植物可以减轻压力。（turn out; pressure） 1.很多野生动物面临着灭绝的危险，因为它们的生存环境发生了巨大的变化。（extinction） Various wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. 2.只有我们人类采取一系列有效的措施，野生动物才能得到保护。（only+倒装; take ...measures; preserve） Only if we human beings take some effective measures can wild animals be preserved. 3.越来越多的树被砍伐。这就是越来越多的鸟正在逐渐消失的原因。（this is why...） More and more trees are being cut down. This is why more and more birds are disappearing. 4.通过参与这次活动，我认识到了合作的重要性。（aware; significance） I have became aware of the significance of cooperation by taking part in this activity. 5.事实证明，看绿色的植物可以减轻压力。（turn out; pressure） It turns our that looking at the green plants can reduce pressure. 六．单元语法巩固（20分） 1. We _____________________ to protect endangered elephants. 我们设立野生动物保护区，保护濒危的大象。 2. We should take measures to ________________________(保护环境免受污染). 3. 他到底为什么想去那么个地方？ Why_______ _________ would he want to go to such a place? 4. 就我而言，只有努力学习才能最终获得成功。 _______________________, only by studying hard can you succeed in time. 5. 我们的眼睛慢慢地适应了黑暗的环境。 Our eyes slowly _________ ______ ______ ________. 6. 为了保护野生鸟类，我们需要你的帮助。 We need your help _______ ________ _____________protect wild birds. 7. 他只能勉强看到有个黑影朝他走来。 He could just ______ ________ a dark shape moving towards him. 8. 女孩提醒我明天去参加会议。 The girl ____________ ______ ______ _________ the meeting tomorrow. 9. Tom让一堆火日夜不熄地一直燃着。 Tom kept a fire burning ______ ______ _________. 10. 疾病已经侵袭了他的大脑The disease ________ ________ his brain. 11. 这笔钱准备用于旅游业的开发。 This money ______ ______ _________ the development of the tourist industry. 12. 我们必须确保旅游业与环境和谐发展。 We must ensure that tourism develops______ ______ _________  the environment. 13. 我们平均每天收到五封信。 _______ _______we receive five letters each day. 14.他的演说引起了激烈的争论。His speech_______ _______ a heated argument. 15.我们不得不迅速适应新制度。 We have to _______ _______ _________the new system. 16.不要在压力下做任何错误的决定。 Don't make any wrong decisions_______ _______ 17.很难弄清楚使用的是什么方法。 It is hard to _______ _______what method is used. 18.我们事先就意识到了这个问题。 We_______ _______ _________ the problem beforehand. 19.大多数问题是由于人为错误造成的。 Most of the problems were_______ _______ human mistakes. 20.昨晚我打算到你家去,但天下雨了。 I_______ _______ __________ to your house last night, but it rained. 1. set up a wildlife reserve 2. preserve the environment from pollution 3. on earth 4. As far as I am concerned 5. adapted to the dark 6. so as to 7. make out 8. reminded me to attend 9. day and night 10. has attacked 11. is intended for 12. in harmony with  13.On average 14. stirred up 15. adapt quickly to 16. under pressure 17.make out 18. were aware of 19.due to 20.intended d to go 七.课文语法填空（10分） When it comes to wildlife　1　(protect), all species—the good, the bad, and the ugly—should be treated 　2　 (equal). Pandas, dolphins, and other cute wildlife 　3　(be) important, but we must pay attention 　4　 less cute animals, too. The world needs all 　5　(kind)—without variety, our planet cannot survive. So if you want the future to be beautiful, you have to give ugly a chance.  Billions of trees　6　(cut) down every year 　7　(make) paper for humans. Every tree 　8　 is cut down is a part of the habitat of animals such as 　9　(this) koalas. In this way a lot of animal homes are being destroyed! Is 　10　 right to make animals homeless so that humans can have more paper?  1.　　　 2.　　　 3.　　　 4.　　　 5.　　　  6.　　　 7.　　　 8.　　　 9.　　　 10.　　　  1.protection　考查名词。句意:当谈及野生动物保护时,所有物种——好的、坏的和丑的——都应该得到平等的对待。When it comes to中的to为介词,故设空处应用名词形式。wildlife protection意为“野生动物保护”。 2.equally　考查副词。本空修饰谓语动词should be treated,故应用副词形式。equally意为“平等地”。 3.are　考查时态及主谓一致。句意:熊猫、海豚和其他可爱的野生动物是重要的,但我们也必须关注不太可爱的动物。本句表述的是客观事实,故应用一般现在时,且第一个分句的主语为复数,故本空应填are。 4.to　考查介词。pay attention to意为“关注;注意”,故本空应填介词to。 5.kinds　考查名词复数。句意:世界需要所有的种类……。根据空前的all可知,本空应填kinds。 6.are being cut　考查动词的时态及语态。句意:每年数十亿的树木正在被砍倒来为人类造纸。根据句意及every year可知,本空应用现在进行时,且trees和动词cut之间为被动关系,故本空应用现在进行时的被动语态。 7.to make　考查动词不定式。本空在句中作目的状语,故应用不定式。 8.that　考查定语从句。句意:每一棵被砍倒的树都是像这些树袋熊这样的动物的栖息地的一部分。本空引导定语从句,修饰名词tree,本空在从句中作主语,且先行词被Every修饰,故应用关系代词that。 9.these　考查代词。根据空后复数名词koalas可知,本空应用these。 10.it　考查it作形式主语。句意:为了人类能有更多的纸而让动物无家可归是对的吗?本句中不定式短语为真正的主语,故应用it作形式主语。 8． 写作（20分） 如何写倡议信 一、文体分析 倡议书属于应用文的一种，是为倡议或是发起某项活动而写的号召性的公开提议性的专用文体。具体写作结构为：点明发出倡议的背景和目的；列举倡议的具体内容；表明倡议者的决心和希望。 二、素材积累 1. 必备词语: make profits 获取利润 habitat loss 栖息地丧失 in danger of extinction 濒临灭绝的危险 be aware of the problem 意识到这个问题 raise awareness of 提高…的意识 speak up for endangered animals为濒危动物发声 watch over 保护，照管，监督 save…from… / keep…safe from… 保护…免受… call on sb. to do sth. 号召某人做某事 2. 必备句型: · 精彩开头 1). We’ll have a show in July to raise people’s awareness of wildlife protection. . 我们将于七月举行一次展览以提高人们对野生动物保护的意识。 2). Many wild animals are in danger of dying out. . 许多野生动物正面临灭绝的危险。 3). Our planet’s wildlife is dying out at an alarming rate. 我们星球上的野生动物正在以惊人的速度灭绝。 · 正文佳句 1). This mass extinction is caused by hunting, habitat loss and pollution. 这种大规模灭绝是由狩猎、栖息地丧失和污染造成的。 2). Air and water are being polluted so that the environment in which animals live is destroyed. 空气和水正受到污染，以至于动物生存的环境被破坏。 3). The government has taken effective measures to protect them. 政府已采取有效措施保护他们。 4). We are not trying to save the animals, we’re trying to save ourselves. 我们不是在拯救动物，我们是在拯救我们自己。 · 余味结尾: 1). When the buying stops, the killing can too. 没有买卖就没有杀害。 2). It is high time that we should take action. 是我们采取行动的时候了。 3). We must make people aware of the problem and help protect the endangered wildlife before it’s too late. 我们必须让人们意识到这个问题，并在为时已晚之前帮助保护濒危野生动物。 4). Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet. 只有当我们学会与自然和谐相处时，我们才能停止对野生动物和对我们的星球的威胁。 三、Writing 假如你是李华，请结合以下信息，给21世纪报社写一份倡议书，倡议大家关注野生动物的保护。 1.简述野生动物的现状； 2.野生动物减少的原因以及采取的措施； 3.呼吁大家保护野生动物。 注意: 字数控制在80词左右; 可以适当增加细节, 以使文章连贯。 ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________________________ Nowadays, with the development of society, the number of wild animals is decreasing at an alarming rate, some of which are in danger of dying out. There are many reasons for this. Firstly, some people are still hunting wild animals to make profits. In addition, the habitats of wild animals are being destroyed by human beings. Finally, environmental pollution also leads to the extinction of wild animals. As for protecting wild animals, what we can do is to make laws to stop hunting them and destroying their habitats. What’s more, measures should be taken to stop pollution. All in all, it is high time that we devoted ourselves to protecting wild animals. To protect wild animals is to protect ourselves. 如今，随着社会的发展，野生动物的数量正以惊人的速度减少，其中一些有灭绝的危险。 这有很多原因。首先，一些人仍然在捕猎野生动物来获取利润。此外，野生动物的栖息地正在被人类破坏。最后，环境污染也导致了野生动物的灭绝。至于保护野生动物，我们能做的就是制定法律来停止狩猎和破坏它们的栖息地。此外，应该采取措施来阻止污染。 总而言之，现在是我们致力于保护野生动物的时候了。保护野生动物就是保护我们自己。 原创精品资源学科网独家享有版权，侵权必究！6 学科网（北京）股份有限公司 $$ Unit 2【单元测试 · 基础卷】 1． .单词拼写（10分） 1．We all need to take measures to (减少) our carbon footprint. 2．The tiger is chasing two (鹿)． 3．Tom was bitten by an (昆虫) in the forest. 4．Her children are most popular in the (附近的地方)． 5．His success was largely (因为) his hard work. 6．After many years, this coastal area was finally named a national wildlife (保护区) last year. 7．Though having lived abroad for years, many Chinese still (遵循) the traditional customs. 8．In recent years, the African elephants have been (袭击) illegally and their habitats are getting limited. 9.His purpose was to make a (利益) by improving the company's performance. 10．Please (提醒) me of the date of the meeting. 二． 单句语法填空1.（10分） 1.Kate heard a man's voice in the background, but she couldn't make ________ what he was saying. 2.In these places patients can go to be near nature during their ________ (recover)． 3.In hospital she'll be under ________ (observe) all the time. 4.We shall never forget the ________ (beautiful) of that lake. 5.The act of selling ________ (illegal) or without permission isn't allowed. 6.The disease has spread at an ________ (alarm) speed. 7.It turns out that just looking at green, growing things can reduce stress, lower blood ________ (press), and put people into a better mood (情绪). 8.He may take a ________ (shoot) himself when it would be better to pass the ball to a teammate. 9.The new rules will become _______________ (effect) in the next few days. 10.Was this really the _______________ (intend) result? 三． 单句语法填空2.（10分） 1. However, Conille insisted that dialogue could only take place if the gang leaders stopped engaging in_____________(legal) activities.  2. China's fourth panda census, released in 2015, showed that 22 of the 33 groups of wild pandas found in the census faced the danger of ______________(extinct). 3. The CDC found the situation ___________(alarm) because dengue transmission peaks in summer when it's hot and humid, and the record-breaking numbers were reported during dengue low season. 4. The three cities' housing markets have seen evident __________(recover) in both new and pre-owned home segments, said Chen Wenjing, director of research with the China Index Academy. 5.  Although these high-tech export controls may seem ______________(profit) in the short term, they are essentially self-imposed shackles. 6. He engages theater actors to don motion capture suits and fully embody the scenes, ensuring that the animation accurately conveys the_____________( intend) emotions. 7. Clement Antonio, parliamentary secretary said one of the country's most pressing challenges today is climate change, as rising sea levels and increasingly severe storms _____________(threat) their very existence. 8. Accordingly, China has proposed to help build a ______________(harmony) world of lasting peace and common prosperity. 9. By showcasing their daily interactions and ____________(emotion) depth, the show aims to resonate with viewers, spread positivity, and unveil the simple yet profound joys of life. 10. Given the pastoral tradition of Liao and its recurring wars with their neighbors, it's not ______________(usual) for a Khitan husband to be away from home for extended periods of time.  四．选词填空。（8分） stir up, search for, cut down, on average, left...behind, watched over, dying out, day and night, am concerned about, on earth 1.If more trees are 　　　　　　, the environment will become even worse.  2.Students who are absent from school are concerned about getting　　　　　　.  3.Dozens of doctors and nurses have been working 　　　　　　 for weeks.  4.To 　　　　　　 students' interest in　traditional Chinese customs, we held a wide range of activities.  5.—What can AI bring for us　　　　　　?  —You see, it can bring much convenience for our life. Of course, it also has some disadvantages. 6.Right now, the deer are being treated and ____________ carefully by many volunteers. 7.I wonder how many elephants are killed ____________ every day according to the data. 8.I ____________ the African elephants, so I wonder what you know about them. 9.Our planet’s wild life is ___________ at a very fast rate and we must act now to solve the problem. 10.The whole research team got up early so as to ____________ wild birds hiding in the forest. 1.cut down　2.left behind　3.day and night　4.stir up　5.on earth 6. watched over 7. on average 8. am concerned about 9.dying out 10. search fo 五．写作素材翻译（10分） 1. 很多野生动物面临着灭绝的危险，因为它们的生存环境发生了巨大的变化。（extinction） ____________________________________________________________________ 2. 只有我们人类采取一系列有效的措施，野生动物才能得到保护。（only+倒装; take ...measures; preserve） ____________________________________________________________________ 3. 越来越多的树被砍伐。这就是越来越多的鸟正在逐渐消失的原因。（this is why...） ____________________________________________________________________ 4. 通过参与这次活动，我认识到了合作的重要性。（aware; significance） ____________________________________________________________________ 5. 事实证明，看绿色的植物可以减轻压力。（turn out; pressure） 1.很多野生动物面临着灭绝的危险，因为它们的生存环境发生了巨大的变化。（extinction） Various wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. 2.只有我们人类采取一系列有效的措施，野生动物才能得到保护。（only+倒装; take ...measures; preserve） Only if we human beings take some effective measures can wild animals be preserved. 3.越来越多的树被砍伐。这就是越来越多的鸟正在逐渐消失的原因。（this is why...） More and more trees are being cut down. This is why more and more birds are disappearing. 4.通过参与这次活动，我认识到了合作的重要性。（aware; significance） I have became aware of the significance of cooperation by taking part in this activity. 5.事实证明，看绿色的植物可以减轻压力。（turn out; pressure） It turns our that looking at the green plants can reduce pressure. 六．单元语法巩固（20分） 1. We _____________________ to protect endangered elephants. 我们设立野生动物保护区，保护濒危的大象。 2. We should take measures to ________________________(保护环境免受污染). 3. 他到底为什么想去那么个地方？ Why_______ _________ would he want to go to such a place? 4. 就我而言，只有努力学习才能最终获得成功。 _______________________, only by studying hard can you succeed in time. 5. 我们的眼睛慢慢地适应了黑暗的环境。 Our eyes slowly _________ ______ ______ ________. 6. 为了保护野生鸟类，我们需要你的帮助。 We need your help _______ ________ _____________protect wild birds. 7. 他只能勉强看到有个黑影朝他走来。 He could just ______ ________ a dark shape moving towards him. 8. 女孩提醒我明天去参加会议。 The girl ____________ ______ ______ _________ the meeting tomorrow. 9. Tom让一堆火日夜不熄地一直燃着。 Tom kept a fire burning ______ ______ _________. 10. 疾病已经侵袭了他的大脑The disease ________ ________ his brain. 11. 这笔钱准备用于旅游业的开发。 This money ______ ______ _________ the development of the tourist industry. 12. 我们必须确保旅游业与环境和谐发展。 We must ensure that tourism develops______ ______ _________  the environment. 13. 我们平均每天收到五封信。 _______ _______we receive five letters each day. 14.他的演说引起了激烈的争论。His speech_______ _______ a heated argument. 15.我们不得不迅速适应新制度。 We have to _______ _______ _________the new system. 16.不要在压力下做任何错误的决定。 Don't make any wrong decisions_______ _______ 17.很难弄清楚使用的是什么方法。 It is hard to _______ _______what method is used. 18.我们事先就意识到了这个问题。 We_______ _______ _________ the problem beforehand. 19.大多数问题是由于人为错误造成的。 Most of the problems were_______ _______ human mistakes. 20.昨晚我打算到你家去,但天下雨了。 I_______ _______ __________ to your house last night, but it rained. 七.课文语法填空（10分） When it comes to wildlife　1　(protect), all species—the good, the bad, and the ugly—should be treated 　2　 (equal). Pandas, dolphins, and other cute wildlife 　3　(be) important, but we must pay attention 　4　 less cute animals, too. The world needs all 　5　(kind)—without variety, our planet cannot survive. So if you want the future to be beautiful, you have to give ugly a chance.  Billions of trees　6　(cut) down every year 　7　(make) paper for humans. Every tree 　8　 is cut down is a part of the habitat of animals such as 　9　(this) koalas. In this way a lot of animal homes are being destroyed! Is 　10　 right to make animals homeless so that humans can have more paper?  1.　　　 2.　　　 3.　　　 4.　　　 5.　　　  6.　　　 7.　　　 8.　　　 9.　　　 10.　　　  8． 写作（20分） 如何写倡议信 一、文体分析 倡议书属于应用文的一种，是为倡议或是发起某项活动而写的号召性的公开提议性的专用文体。具体写作结构为：点明发出倡议的背景和目的；列举倡议的具体内容；表明倡议者的决心和希望。 二、素材积累 1. 必备词语: make profits 获取利润 habitat loss 栖息地丧失 in danger of extinction 濒临灭绝的危险 be aware of the problem 意识到这个问题 raise awareness of 提高…的意识 speak up for endangered animals为濒危动物发声 watch over 保护，照管，监督 save…from… / keep…safe from… 保护…免受… call on sb. to do sth. 号召某人做某事 2. 必备句型: · 精彩开头 1). We’ll have a show in July to raise people’s awareness of wildlife protection. . 我们将于七月举行一次展览以提高人们对野生动物保护的意识。 2). Many wild animals are in danger of dying out. . 许多野生动物正面临灭绝的危险。 3). Our planet’s wildlife is dying out at an alarming rate. 我们星球上的野生动物正在以惊人的速度灭绝。 · 正文佳句 1). This mass extinction is caused by hunting, habitat loss and pollution. 这种大规模灭绝是由狩猎、栖息地丧失和污染造成的。 2). Air and water are being polluted so that the environment in which animals live is destroyed. 空气和水正受到污染，以至于动物生存的环境被破坏。 3). The government has taken effective measures to protect them. 政府已采取有效措施保护他们。 4). We are not trying to save the animals, we’re trying to save ourselves. 我们不是在拯救动物，我们是在拯救我们自己。 · 余味结尾: 1). When the buying stops, the killing can too. 没有买卖就没有杀害。 2). It is high time that we should take action. 是我们采取行动的时候了。 3). We must make people aware of the problem and help protect the endangered wildlife before it’s too late. 我们必须让人们意识到这个问题，并在为时已晚之前帮助保护濒危野生动物。 4). Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet. 只有当我们学会与自然和谐相处时，我们才能停止对野生动物和对我们的星球的威胁。 三、Writing 假如你是李华，请结合以下信息，给21世纪报社写一份倡议书，倡议大家关注野生动物的保护。 1.简述野生动物的现状； 2.野生动物减少的原因以及采取的措施； 3.呼吁大家保护野生动物。 注意: 字数控制在80词左右; 可以适当增加细节, 以使文章连贯。 ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________________________ 原创精品资源学科网独家享有版权，侵权必究！6 学科网（北京）股份有限公司 $$