2018年四川成人高考专升本英语真题试卷【附答案】
【题目描述】
第 1 题
正确答案：C
解：令X=lnx，则x=ex
所以f′（X）=1+ ex
两边同时积分得f（X）=X+ ex+C
所以f（x）=x+ ex+C
这就是替代还原的方法
【题目描述】
第 18 题____，Sam knows lots of things about philosophy．
正确答案：D
求助，我想要一套比较好的英语四级真题试卷，要那种试卷合起来独立装成一本，
答案也装成一本的，不要那种试卷分散装订的，麻烦死了，另外还要附有光盘，
答案解析不要太过详细，只要有基本的解释就够了，麻烦把试卷的全称说一下，谢谢。
当当网上有卖的
星火英语·2012上大学英语四级考试模拟试卷(5套真题+10套模拟+25篇预测作文+2000高频词)含MP3光盘
这套很不错
【题目描述】
第 10 题辩证法和形而上学在真理观上的观点表现在是否承认（ ）
【题目描述】
第 11 题
【我提交的答案】：2
【参考答案分析】：
对括号内式子求导，得x^2-1=(x+1)(x-1)
当导数为零时式子有极值，即x=1或x=-1
所以易知x=1时可以取到极限值，既可以直接将x=1带入原式得：
x^3-x+2=2
内装订线单位全称:_姓名：_考号：_桌号：_外装订线2018年四川成人高考专升本英语真题试卷【附答案】第卷(选择题，共125分)I. Phonetics(5 points）Directions: In each of the following groups of words, there are four underlined letters or letter combinations marked a, b, and pare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.1.A.captain B.sustain C.contain D.retain2.A.pension B. mission C.tension D.revision3.A.actress B.business C.excess D.endless4.A.combination B.climbing C.bamboo D.ambition5.A.blew B.crew C.sew D.JewII. Vocabulary and Structure( 15 points)Directions: There are 15 incomplete sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best completes the sentence and blacken the corresponding letter on the Answer Sheet.6. asked two passers-by how to get to the new railway station, but of them knew it.A.none B.either C.neither D.both7. The boss wants to talk to you. He seems unhappy with your performance. Oh,I be in trouble. I hope he wont fire me.A.must B.can C.should D. would8. my daughter reaches the age of eighteen she can apply for driving license.A.Unless B.Because C.Since D.Once9. Ill consider Ms. Smith tonight, but I am not sure if I have the time.A.to see B.seeing C.to have seen D.see10. The train to arrive at 11: 30, but it was an hour late.A.was supposed B.is supposed C.supposes D.supposed11. Bob doesnt look his age. I think hes somewhere .A. in forty B. in forties C. in his forty D. in his forties12. I feel very excited the thought of joining my family in a week.A.on B.for C.at D.in13. a hotel, we looked for somewhere to have dinner.A. Finding B.Having found C.We finding D.We found14. Despite the sudden breakdown of the General Manager, work is going on in the company. A. usual B. routine C. normal D. regular15. At such a time of crisis, we must try to all differences and stick together.A. set apart B. set back C. set aside D. set down16. Many governments are now taking to reduce smoking in public places.A.steps B.sides C.effect D.change17. The employees more enthusiastic about their work since their pay rose.A.are B. have been C. were D. will be18. Children dont understand initially what they are reciting, but it will have an impact on their thinking.A.casually B.especially C.regularly D.gradually19. The university regulations require that the students at least 90% of the lectures. A.attended B.to attend C.would attend D.attend20. In October 2007, the Change-1 satellite was successfully at Xichang.A.launched B. presented C.regulated D. engaged. Cloze(30 points)Directions: For each blank in the following passage, there are four choices marked A, B,C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the Answer Sheet. The destruction of habitats(栖息地) all over the world is the primary reason species are becoming extinct(灭绝) or endangered. Houses， highways，dams， industrial buildings， and ever-spreading- farms now dominate 21 formerly occupied by forests， deserts， and wetlands. 22 the beginning of European settlement in America， 23 over 65，000，000 acres of wetlands have been drained. One million acres alone vanished 24 1985 and 1995. habitat destruction can be 25 or it can be subtle occurring over a 26 period of time without being noticed. 27 such as sewage from cities and chemical runoff from farms, can change the 28 and quantity of water in streams and rivers. To 29 living in a delicately balanced habitat, this disturbance can be as 30 as the clear-cutting of a rainforest. 31 remaining habitats are carved into smaller and smaller pockets or islands, remaining species are forced to exist in these 32 areas, which causes further habitat 33. These species become less adaptable to environmental 34 in fact, they become 35 endangered Scientists believe that when a habitat is cut by 90%, one-half of its plants, animals and insects will become extinct.21.A.landscapes B. cities C.maps D. pictures22.A.At B. Before C.After D.Since23.A.for example B.in addition C.at last D.after all24.A.both B.in C.between D.before 25.A.simple B.beneficial C. interesting D. obvious26.A.long B.short C.happy D. sad27.A.Construction B.Pollution C.Farming D.Living28.A.amount B.purity C.nature D.quality29.A.people B.species C.plants D.insects30.A.effective B.small C. fatal D.surprising31.A.How B. Whether C. Before D. As32.A.crowded B.extensive C.large D. bare33.A.reform B.destruction C.support D.discovery34.A.improvements B.changes C.protect
【题目描述】
第 5 题
正确答案：C
【题目描述】
第 7 题Turn on the television or open a magazine and you advertisements showing happy，balanced families．
【题目描述】
根据以下选项，回答 89～90 题：
Page}
第 89 题 胸骨角位于 （ ）
【题目描述】
第 9 题曲线y=x/(2+x)的铅直渐近线为______
参考答案分析：
【题目描述】
第 1 题
