2019届一轮复习人教版选修八Unit2Cloning单元学案（25页word版） 25页

‎2019届一轮复习人教版选修八Unit 2Cloning单元学案 单元基础词汇 ‎1．drawback n． 缺点；不利条件__‎ ‎2．experiment n． 实验__‎ ‎3．explore vt. 探索__‎ ‎4．ban n．& vt. 禁止__‎ ‎5． argument__ n．争论 ‎6． hot__ topic 热点话题 ‎7．medical breakthrough 医学上的突破__‎ ‎8．be worth considering__值得考虑 ‎9．in terms of__从……角度 ‎10．object to__/be against__反对 ‎11．agree/be for 同意；支持__‎ ‎12．a sound attitude 正确的态度__‎ ‎13．follow the lead 仿效__‎ ‎14．contribute to solving__ the problem of有助于……问题的解决 ‎15．test out the theory by experiment 用实验检验理论__‎ 单元好句 ‎1．Today's technology develops so__ quickly that__ many impossible things become true.‎ 如今的科技发展得如此快以致于许多不可能的事情都成为了现实。 ‎ ‎2．In my own opinion, I agree to__ clone the endangered animal and disagree with__ cloning human.‎ 以我的观点，我同意克隆濒危动物、不同意克隆人类。‎ ‎3．I think that we should use the clone to make our life better off__.‎ 我想我们应该用克隆物使人们的生活变得更美好。‎ 词汇素养 Ⅰ.单词识记 ‎1． obtain__vt.获得；赢得 ‎2． owe__vt.欠 (账、钱、人情等)；归功于……‎ ‎3． bother__vt.打扰　vi.操心　n．[C，U]烦扰 ‎4． vain__adj.虚荣的；自负的；徒劳的 ‎5． forbid__vt.禁止；不准→ forbidden__adj.被禁止的 ‎6． object__vi.反对；不赞成→ objection__n.[C，U]不赞成；反对；异议 ‎7． strike__vi.& vt.& n．打；撞击；罢工→ struck__ (过去式)→ struck__ (过去分词)→ striking__adj.迷人的 ‎8． differ__vi.不同；相异→ different__adj.不同的；与众不同的→ difference__n.[C，U]差异；不同 ‎9． undertake__vt.着手；从事；承担→ undertook__ (过去式)→ undertaken__ (过去分词)‎ ‎10． accumulate__vt.& vi.积累；累积→ accumulation__n.[U]积累；增加 ‎11． reasonable__adj.合情理的；讲道理的；公道的→ (反义词) unreasonable__adj.不合情理的 ‎12． resist__vt.抵抗；对抗→ resistance__n.[U]抵抗；对抗→ resistant__adj.有抵抗力的；抵制的 ‎13． retire__vi.退休；离开→ retired__adj.退休的→ retirement__n.[U]退休 ‎14．breakthrough n． 突破__‎ ‎15．attain vt. 获得；到达__‎ ‎16．drawback n． 缺点；不利条件__‎ Ⅱ.词汇运用 ‎1． (2016·上海卷)Walking should be forbidden__ (forbid) on escalators that are at least 18.5 in height.‎ ‎2． (2016·天津卷)IQ and family social and economic class made no real difference__ (differ) in how the boys turned out.‎ ‎3． (2015·全国卷Ⅱ)It struck__ (strike) me that playing against the other team was a great moment for all the girls on the team.‎ ‎4． (2015·陕西卷)They took a more reasonable__ (reason) approach, conveying to their children how success at school could improve their lives.‎ ‎5． (2015·陕西卷)My soccer coach retired__ (retire) last week.‎ ‎6． (2015·湖南)Sometimes I act as a listening ear for fellow students to talk over what is bothering__ (bother)‎ ‎ them.‎ ‎7． (湖北卷)So far the wellknown journalist has accumulated__ (accumulate) more than 4000 interviews with famous people.‎ ‎8．From the appearance, we can not tell the differences__between the twins, though they always have some different__ideas. (differ)‎ ‎9．Grey decided to move to the countryside and his mother made no objection__to it, while his father objected__to it. (object)‎ ‎10．Don't assume__that you are a princess and stop living in assumption__any more. (assume)‎ Ⅲ.单词巧记 ‎1．由forbid的用法想到的 ―→ ‎2．accumulate相关动词小结 ‎①accumulate vt.& vi.积累　　②increase vt.& vi.增长 ‎③enlarge vt.& vi. 扩大；放大 ④expand vt.& vi. 扩大；膨胀 ‎⑤shrink vt.& vi. 收缩；缩小 ⑥reduce vt.& vi.减少 ‎3．resist形近词集锦 ‎①resist v．抵抗 ②insist v. 坚持 ‎③assist v. 协助 ④assistant n. 助手 ‎ ‎⑤consist vi. 由……组成 ‎ ‎⑥consistent adj. 始终如一的；一贯的 ‎ 短语速记 Ⅰ.短语默写 ‎1． pay off__得到好结果；取得成功；偿清 ‎2． cast down__使失望；使沮丧；不愉快 ‎3． object to__反对 ‎4． in favour of__赞成；支持 ‎5． (be) bound to (do)．..__一定或注定 (做)……‎ ‎6． strike...into one's heart__使……刻骨铭心 ‎7． from time to time__不时；偶尔 ‎8． bring back to life__使复生；使复活 ‎9． in vain__白费力气；枉费心机 ‎10． in good/poor condition__状况很好/坏；情况很好/坏 Ⅱ.短语填空 ‎1．The house is really in poor condition__—it would cost far too much to repair.‎ ‎2．Keep on working hard like this, and your research is bound to__obtain great success.‎ ‎3．The athlete's years of hard training paid off__when she finally won the Olympic gold medal.‎ ‎4．Don't let yourself be cast down__by a small failure in the experiment, try again.‎ ‎5．His parents tried to persuade him not to give up his wellpaid job, but their efforts were in vain__.‎ ‎6．In ancient times, people believed that they could be brought back to life__after death.‎ ‎7．Jack wanted to be informed from time to time__how Jane ‎ was getting along.‎ ‎8．Mountain Tai struck__its beauty into her heart__and she decided to visit it again the next year.‎ Ⅲ.联想归纳 ‎1．“动词＋副词”构成的合成词 ‎①drawback n．缺点 ‎②breakdown n．崩溃；故障 ‎③farewell n．告别 ‎④feedback n．反馈 ‎⑤setup n．计划；组织 ‎⑥break up n．分手；中断 ‎2．“in＋名词＋of”短语全接触 ‎①in favour of赞成；支持 ‎②in memory of为了纪念……‎ ‎③in search of寻找 ‎④in honour of为了纪念 ‎⑤in view of鉴于； 由于 ‎⑥in terms of就……而言 ‎3．heart相关短语全扫描 ‎①put one's heart into用心对待 ‎②lose heart灰心 ‎③heart and soul全心全意地 句式悟通 背会原句 知晓考点 我会仿用 ‎1.‎ ‎！！！Then_came_the_disturbing_news_that Dolly had become seriously ill.‎ 接着传来了多莉病重的坏消息。‎ then位于句首，句子用全部倒装语序，that引导同位语从句。‎ ‎1.接着传来天宫二号成功发射升空的令人兴奋的消息。‎ ‎ Then came the exciting news that__ the Tiangong Ⅱ was launched into orbit successfully.‎ ‎2.！！！The_advantage_is_that if there is a new illness some of these animals may die, but others will survive and pass on the ability to resist that disease to the next generation.‎ 其优点是如果发生某种新的疾病，这类动物中的一些可能会死掉，但是另外一些却能存活下来，并且把这种免疫力传给下一代。‎ The advantage is that...“其优点是……”，that引导表语从句。‎ ‎2.骑自行车上班的优势是我们可以边骑车边锻炼身体。‎ ‎ The advantage of cycling to work is that__ we can work out at the same time.‎ 精 研 词 汇 短 语 ‎1．undertake vt. (undertook，undertaken)着手；从事；承担；保证 归纳拓展 undertake sth.着手/从事/承担某事 undertake to do sth.保证/答应做某事 undertake that...保证……‎ undertake responsibility/a task/a project 承担责任/任务/工程,‎ 多维训练 完成句子。‎ ‎① (2015·湖北高考完成句子)We must act as quickly as possible now.Just tell us whether you can undertake the task__ or not.‎ 现在我们必须尽快采取行动。你就告诉我们你能否承担这项任务吧。‎ 单句语法填空。‎ ‎②Don't get worried，because the secretary has undertaken to finish__ (finish)the task by Friday.‎ ‎③The project undertaken__ (undertake)by the young engineer on his own turned out to be very successful.‎ ‎2．object vt.反对；不赞成 (后常接介词to)　n．物体；目标 归纳拓展 ‎(1)object to sb./sth.不赞成/反对……‎ object to doing sth.反对做某事 ‎(2)objection n．反对；提出异议 make/raise an objection to sth.对……提出异议 have/make an/no objection to (doing)sth.反对/不反对 ‎ (做)某事 ‎(3)objective adj.真实的；客观的；无偏见的 多维训练 单句语法填空。‎ ‎①To be honest, I strongly object to cheating__ (cheat) in examinations.‎ ‎②Even if they raise an objection__ (object) to our plan, we must go ahead with it.‎ 单句改错。‎ ‎③Sometimes, some students object the idea that English classes are taught in English.‎ ‎ object后加to__‎ ‎④He has a strong objection to smoke on public places, especially with females present.‎ ‎ smoke→smoking__‎ ‎3．forbid vt. (forbade/forbad，forbidden)禁止；不准 归纳拓展 forbid sb.sth.禁止某人某事 forbid doing sth.禁止做某事 It is forbidden to do做某事是禁止的 温馨提示 forbid后不能直接跟动词不定式作宾语，但可直接跟动名词作宾语，也可用forbid sb.to do sth.形式，有类似用法的单词还有：allow，permit，advise等。‎ 多维训练 用所给动词的适当形式填空。‎ ‎①They forbade their children to play__ (play)computer games.‎ ‎②The manager forbids smoking__ (smoke)during office hours.‎ ‎③We were forbidden to look__ (look)out of the window when the train was moving.‎ 用forbid的相关词语完成下列小片段。‎ 在英国的许多公共场所禁止吸烟。即使在家里，没有其他家庭成员的允许，吸烟也是禁止的。因此，在中国，一些人认为，我们的法律也应该禁止人们在公共场合吸烟。‎ In many public places in England, it ④ is forbidden to smoke__.Even at home, without the permission of other members, smoking ⑤ is forbidden__.So some people in China also hold the opinion that our law should also ⑥ forbid people to smoke__ in public.‎ ‎4．owe vt.欠 (账、钱、人情等)；归功于……；应感谢 归纳拓展 ‎(1)owe sb.sth.＝owe sth.to sb.欠某人某物 owe sb.an apology 该向某人道歉 owe sb.a favour 欠某人一个人情 ‎(2)owe...to...把……功功于……‎ owe it to sb. that...多亏某人……‎ owing to 因为；由于,‎ 多维训练 完成句子。‎ ‎① (牛津高阶)She still owes__￡3,000 to__ her father.‎ 她还欠她父亲3,000英镑。‎ ‎②I think maybe we owe you an apology__.‎ 我认为我们应向你道歉。‎ ‎③Mary will take care of the baby—she owes me a favour__.‎ 玛丽会照看孩子的——她欠我一个人情。‎ ‎④ Owing to__ the rain, the match was cancelled.‎ 由于大雨，比赛被取消了。‎ ‎5．bother vt.打扰　vi.操心　n．烦扰；令人烦恼的事或人 归纳拓展 ‎(1)bother sb.with/about sth.为某事打扰或麻烦某人 bother to do/doing sth.费心做某事 It bothers sb.that/to do sth.使某人苦恼的是 ‎(2)put sb.to any bother 给某人添乱 why bother 没有必要吧；何苦那么麻烦 多维训练 在空格内填入适当的词或用所给词的适当形式填空。‎ ‎①Could I bother you to give__ (give) this parcel to Mr.Miller?‎ ‎②We had a lot of bother finding__ (find) an available apartment.‎ ‎③To be frank with you, I don't want to bother her with__ my problem at the moment.‎ ‎6．resist vt.抵抗；对抗 归纳拓展 ‎(1)resist sb.doing sth.反对某人做某事 can't resist doing sth.忍不住做某事 be hard/difficult to resist 难以抗拒 resistance n．反抗；抵制,‎ 多维训练 用所给词适当形式填空或完成句子。‎ ‎①As a student, studying is always the first thing, and we should consciously resist__ (自觉抵抗) the temptation of the Internet games.‎ ‎②To tell the truth, I resist forbidding__ (forbid) students to carry cell phones.‎ ‎③Finally no one could resist bursting__ (burst) into laughter.‎ ‎④As for me, tasty food is hard to resist__ (难以抗拒)．‎ ‎7．strike vt. (struck，struck/stricken)敲击；打中；忽然想起；给人深刻印象；罢工　n．罢工 归纳拓展 ‎(1)strike...into one's heart使……刻骨铭心 be struck by/with被……击中/打动/感动 It strikes/hits/occurs to sb. that...某人突然想起……‎ sth./ strikes/hits/occurs to sb.某人突然想起……‎ ‎(2)go on strike罢工 多维训练 完成句子。‎ ‎①The visitors were struck by__ the beauty of the tourist area.‎ 游客被旅游区的美景迷住了。 ‎ ‎②Staff at the hospital went on strike__ in protest at the incidents.‎ 医院员工举行罢工，抗议这几起事件。‎ 指出strike在句中的不同含义。‎ ‎③He struck me as a very serious but friendly person. 给人……印象__‎ ‎④A powerful earthquake struck the Italian island of Sicily early this morning. 袭击/撞击__‎ ‎⑤At this point, it suddenly struck me that I was wasting my time. 突然想起__‎ ‎⑥She struck him in the face. 打__‎ ‎8．pay off 还清 (债务)；取得成功；得到回报 归纳拓展 pay sth. off全部偿还；偿清债务 pay sb. off (结工资后)解雇；打发走 pay for sth.付钱 (买)；支付；为某事吃苦头或受惩罚 pay sb. for sth.付钱给某人买 pay back还钱；偿还；报复 pay a visit to参观；访问 pay attention to注意；重视 多维训练 完成句子。‎ ‎① (2016·北京高考)This work is starting to pay off__. The annual death rate for adult condors has dropped from 38% in 2000 to 5.4% in 2011.‎ 这些努力开始奏效。成年秃鹫的年死亡率从2000年的38%降到了2011年的5.4%。‎ ‎②What made him happy was that after all these years he at last paid off all his debts.__ ‎ 使他高兴的是经过这些年之后他终于还清了所有的债务。‎ ‎③That I can pay back__ the help people give me makes me happy.‎ 能够回报人们给我的帮助让我感到很开心。‎ 写出下列句子中pay off的含义。‎ ‎④It would take him the rest of his life to pay off that loan. 偿清__‎ ‎⑤Two hundred workers have been paid off. (结工资后)解雇__‎ ‎⑥All those weeks of studying will pay off when you take the exam. 取得好结果__‎ 高考小作文。‎ ‎⑦ (山东高考书面表达)我对英语非常感兴趣而且付出了努力，最后我所有的努力都得到了回报。‎ I was very interested in English and worked hard at it. ‎ Finally all my efforts paid off__.‎ ‎9．be in good/poor condition 处于好的/坏的状况 归纳拓展 out of bad condition (人)身体不适 on condition that 只要；条件是 on this/that condition 在这种/那种条件下 on no condition 绝不；一点儿也不 (放在句首，用部分倒装)‎ working/living conditions 工作/生活条件 多维训练 完成句子。‎ ‎① (朗文辞典)The car has been well maintained and is in good condition__.‎ 这辆车一直保养得很好，车况极佳。‎ ‎② (安徽高考书面表达)What I want you to realize is that everybody is likely to be in poor condition__.‎ 我想让你意识到的是每个人都可能有状况不好的时候。‎ ‎③You can keep the books for about 3 weeks on condition that__ you preserve them well.‎ 这些书你可以借三个礼拜，条件是你必须好好保存。‎ 句式升级。‎ ‎④You should tell him what has happened on no condition.‎ ‎→ On no condition should you__ tell him what has happened. (倒装句)‎ ‎⑤They agreed to lend us the car as long as we returned it before the weekend.‎ ‎→They agreed to lend us the car on condition that__ we returned it before the weekend. (同义句转换)‎ 精 析 句 型 结 构 ‎1．Then came the disturbing news ！！！that Dolly had become seriously ill.‎ 接着传来了多莉病重的消息。‎ 该句中的划线部分是一个由that引导的同位语从句。‎ 归纳拓展 同位语从句紧跟在fact, news, idea, doubt, possibility, hope, promise, belief, suggestion, request等名词后，用来说明解释名词的具体内容。有时同位语从句可以不紧跟在它所说明的名词后面，而被其他成分隔开，在语法上叫作分隔式同位语从句。‎ 多维训练 根据括号内的汉语意思完成句子。‎ ‎①—Is there any possibility that you could pick me up at the airport__ (你去机场接我)?‎ ‎—No problem.‎ ‎②)Modern science has given clear evidence that smoking can lead to many illnesses__ (吸烟会导致许多疾病)．‎ ‎③Despite the fact that they lacked food__ (他们缺少食物), the explorers continued towards the goal.‎ ‎④— It's thirty years since we last met.‎ ‎— But I still remember the story, believe it or not, that we lost our way on a rainy night__ (我们在一个下雨的夜晚迷路了)．‎ ‎2．！！！The advantage is that if there is a new illness some of these animals may die, but others will survive and pass on the ability to resist that disease to the next generation.‎ 优点是如果发生了某种新的疾病，这类动物中的一些可能会死去，而另外一些却能存活下来，并且把这种抗疫力传给下一代。‎ The advantage is that...“优势是……”。that在此引导表语从句。‎ 归纳拓展 The advantage/strength of...is that...……的优势是……‎ The disadvantage of...is that...……的不足是……‎ The drawback of...is that...……的缺点是……‎ The problem of...is that...……的问题是……‎ The chance is that...有可能……,‎ 多维训练 完成句子。‎ ‎①！！！The advantage is that smiling can not only make us happy, but also please others.‎ 其优势在于微笑不仅可以让我们高兴，还能让别人开心。‎ ‎②！！！The drawback of the popularity of cars is that it brings about so much air pollution.‎ 汽车普及的缺点是它带来了严重的空气污染。‎ 单句写作。‎ ‎③在你所就读的大学里住宿的优点是如果你有问题可以得到帮助。‎ The advantage of using your university accommodation is ‎ that you can get help__ if you have a problem.‎ 基 础 训 练 Ⅰ.单句语法填空 ‎1．—Dad, I don't think Oliver the right sort of person for the job.‎ ‎—I see.I'll go right away and pay him off__.‎ ‎2．—Is it true that Mike refused an offer from Yale University yesterday?‎ ‎—Yeah, but I have no idea why__ he did it；that's one of his favorite universities.‎ ‎3．The athlete's years of hard training paid off__ when she finally won the Olympic gold medal.‎ ‎4．Jane, you've made such great efforts that you are bound to pass__ (pass) the exam.‎ ‎5．I don't often go to the cinema at weekends, merely from time to__ time.‎ ‎6．His efforts to raise money for his program were in__ vain because no one showed any intention to take a cent out of their pockets.‎ ‎7．Although a teenager, Fred could not resist being told__ (tell) what to do and what not to do.‎ ‎8．Be reasonable__ (reason)—you can't expect him to finish all his work in so little time.‎ ‎9．With all his attention fixed__ (fix) on the computer ‎ game, the boy even didn't notice his mother come in.‎ ‎10．Please don't worry! Everything will be arriving in__ good condition.‎ Ⅱ.完成句子 ‎1．Not having prepared well, you are bound to__ (一定会) suffer great losses in the commercial trade.‎ ‎2．The considerate mother went upstairs to see if her baby was awake from time to time__ (时不时地)．‎ ‎3．It was the experienced doctor that brought her back to life__ (让她复活) after she stopped breathing so long.‎ ‎4．In my opinion, it is in vain__ (徒劳无功的) to forbid teenagers to smoke.It's essential to enable them to realize the harm of smoking.‎ ‎5．众所周知，对于鲍勃 (Bob)要给我们升工资这个承诺，他已经食言了。‎ ‎ It__ was known to all that Bob had broken his promise that__ he would give us a pay rise.‎ ‎6．对于是否允许做人类克隆实验的话题，我们开展了一场激烈的讨论。 (There be句型)‎ ‎ There was a fierce debate over__ the problem whether human cloning experiments should be allowed.‎ ‎7．我不清楚他现在到底在哪里。‎ ‎ I've no idea__ where he is now.‎ ‎8．据我所知，没有多大的可能通过克隆来让那些灭绝的动物，如恐龙，复活。‎ To the best of my knowledge, there is little chance__ to bring those extinct animals like dinosaurs back to life through cloning.‎ ‎9．他的健康状况良好，所以他能抵抗各种疾病。‎ That his health is in good condition__ indicates he can resist all kinds of diseases.‎ ‎10．事情的真相是很多移民都没有实现愿望，不能在加利福尼亚州发财。‎ ‎ The truth was that__ many immigrants couldn't realize their dreams, without making a great fortune in California.‎ Ⅲ.单句改错 ‎1．Sometimes, some students object the idea that English classes are taught in English.‎ ‎ object后加to__‎ ‎2．Owe to his absence, we had to put off the class meeting till next week.‎ ‎ Owe→Owing__‎ ‎3．It suddenly struck to me that we ought to make a new plan.‎ ‎ 去掉第一个to或struck→occurred__‎ ‎4．John is strongly convinced that extra time spent studying now will pay back in the future.‎ ‎ back→off__‎ ‎5．You can go swimming in condition that you don't go too far from the river bank.‎ ‎ in→on__‎ ‎6．Mother made a promise if I passed the College Entrance Examination, she would buy me a mobile phone.‎ ‎ promise后加that__‎ Ⅳ.语篇填空 On the other hand, Dolly's appearance raised a storm of 1.objections__ (object) and had a great impact 2.on__ the media and public imagination.It became controversial.It suddenly opened everybody's eyes to the 3.possibility__ (possible) of using cloning to cure serious illnesses and even to produce human beings. 4.Although__ at present human egg cells and embryos needed for cloning research are difficult 5.to obtain__ (obtain), newspapers wrote of evil leaders hoping to clone themselves to attain 6.their__ ambitions.Religious leaders also raised moral questions.Governments became nervous and more conservative.Some began to reform their legal systems and forbade research into human cloning, 7.but__ other countries like China and the UK, continued to accumulate evidence of the abundant medical aid 8.that__ cloning could provide.However, scientists still wonder 9.whether__ cloning will help or harm us and where it 10.is leading__ (lead) us.‎ 能 力 提 升 Ⅰ.单元考点与短文改错 Cloning is a process using to make an animal that is exact ‎ like its parents. So far, scientists had cloned rabbits, sheep, cows, pigs and some other animal.‎ It's DNA that makes cloning possible. There is DNA in most living things, included human beings. Your DNA is the same in every part of your body. You have your own DNA, which is identical with your parents but not the same. However, Dolly's DNA is the same as that of the sheep she was cloned from.‎ There is no doubt cloning can help save those animals in the danger. It can also be very benefit to human beings. With its help, scientists are bound to exploring more ways to treat serious diseases. However, cloning could be used in some ways to harm society. So all governments should make laws to make sure it can be used properly.‎ 答案：‎ Cloning is a process to make an animal that is like its parents. So far, scientists cloned rabbits, sheep, cows, pigs and some other .‎ It's DNA that makes cloning possible. There is DNA in most living things, human beings. Your DNA is the same in every part of your body. You have your own DNA, which is identical your parents but not the same. However, Dolly's DNA is the same as that of the sheep she was cloned from.‎ There is no doubt cloning can help save those animals in the danger. It can also be very to human beings. With its help, scientists are bound to more ways to treat serious diseases. However, cloning could be used in some ways to harm society. So all governments should make laws to make sure it can be used properly.‎ Ⅱ.单元语法与语法填空 (同位语从句)‎ Dolly the sheep became a scientific breakthrough when the news 1.that__ she had been born was announced in 1997. However, the problem 2.that__ she later developed a serious lung disease 3.bothered__ (bother) scientists. On 14th February 2003 scientists made the decision 4.that__ Dolly should be put to sleep. Dolly's death, like her birth, was bound 5.to raise__ (raise) worries. The fact that Dolly died when she was quite young made people 6.disappointed__ (disappoint). Scientists hold the belief 7.that__ cloning may lead to many important scientific breakthroughs and medical treatments. But now the question is 8.whether__ she died young because she was a clone. Besides that, there is also a fierce debate over the question 9.whether__ human cloning experiments should be allowed. Scientists believe human cloning is just a matter of time but the 10.assumption__ (assume) that human clones have already been born hadn't been proved yet.‎ Ⅲ.单元话题与书面表达 ‎(一)根据提示结合本单元所学知识补全短文 (无提示处请填写适当的过渡词)‎ There has been a heated discussion about whether cloning technique should be developed. Opinions ① differ greatly from person to person__ (人与人观点分歧很大)．‎ Some are for its development. ❶They believe that ② it will be bound to benefit us__ (这一定会让我们受益)．❷Large quantities of commercial food can be produced to meet people's needs, which is one of the advantages of cloning. ③ Besides/In addition/What's more__,_we can also clone human body organs for medical use. On the contrary, ④ others strongly object to it__ (另外一些人强烈反对). They fell depressed to find that it could raise a storm of moral questions. ⑤ However__,_in my opinion, ⑥ cloning will pay off as long as all undertake to use it properly__ (只要所有人同意正确利用克隆技术，克隆会取得成功)．‎ ‎(二)按要求升级词汇和句式 ‎1．用本单元所学高级词汇升级加黑词语 ‎(1)for→ in favor of__‎ ‎(2)depressed→ cast down__‎ ‎2．按要求升级句式 ‎(1)用hold the belief同位语从句升级句❶‎ ‎ They hold the belief that it will be bound to benefit us.__‎ ‎(2)用表语从句升级句❷‎ ‎ One of the advantages of cloning is that__ large quantities of commercial food can be produced to meet people's needs.‎