（全国Ⅱ）《龙门亮剑》高三英语一轮课件 SB1 Units 12

1、 S B Units 12.高频单词聚焦1 adj. 诚实的；正直的2 adj. 忠诚的；忠心的3 n. 锤子；槌4 n. 解答；解决办法； 解决方案5 adj. 古典的；古文 学的honest loyalhammersolutionclassical6 n 冒险& vt.& vi. 7 n. 火柴8 vt. 幸免于；从中 生还 vi. 幸存9 adj. 荒芜的；荒废的10 n. 错误；差错adventurematchsurvivedesertederror11 vt.& vi. 分享；共有；分配. 共享；份额12 n. 触觉；知觉；感觉； 情绪13 n. 悲哀；悲痛14 n. 演说；讲话；语

2、音15 adj. 英俊的；大方的sharefeelingsorrowspeechhandsome16 dj. 宽的17 v. 交换；兑换18 n. 服务19 v& adj. 整理；整齐的20 adj. 独立自主的exchange broadtidyindependentservice21 n. 短语；表情22 n. 信号23 v. 出版；发表24 v. 比较25 v. 发音；宣告26 n. 多数27 v. 替换28 v& n. 重复29 n. 情形；境遇30 adj.& v. 相等的；胜任的expressionsignalpublishcomparepronouncemajorityrepla

3、cerepeat situation equal.重点短语扫描1 在方面敏捷， 迅速2 喜欢；爱好3 担心；关心4 例如5 给某人写信(通常指 短信)be quick in/atbe fond ofcare aboutsuch asdrop sb.a line6 与某人辩论某 事7 寻找8 为了9 把看做10 记住argue with sb.about sth.hunt forin orde r totreat.as.keep in mind11 别客气12 总共13 除了 之外14 不睡，熬 夜15 发生make oneself at home in totalexcept forstay

4、upcome about16_ 以告终17_ 引进；引来18_ 许许多多； 极多19 _ 掌握20_ 几乎；差不 多；或多或 少end up withbring ina great many have a good knowledge of more or less.课文原句突破1I dont enjoy singing，_ _ _ _ _(也不喜欢电脑)【答案】nor do I like computers2One day Chuck_ _ _ _ _ _ _ _(在飞越太平洋时) when suddenly his plane crashes.【答案】is on a flight acro

5、ss the Pacific Ocean3In order to survive，Chuck _ _ _ _ _ _ _(与一位不同寻常的朋友建立了友谊)a volleyball he calls Wilson.【答案】develops a friendship with an unusual friend4Businessmen and tourists often come to China _ _ _ _ _ _(不能讲汉语)【答案】without being able to speak Chinese5For a long time the language in America _

6、_ _ (保持不变)，while the language in England changed.【答案】stayed the same6However，most of the time people from the two countries _ _ _ _ _ _ _ _(相互理解没困难)【答案】dont have any difficulty in understanding each other honest adj.诚实的，正直的，坦诚的 an honest man一个诚实的人to be honest (with you)坦白说，老实告诉你(通常置于句首)It is honest

7、of sb.to do sth.(某人)做是正直的Thank you for being so honest with me.感谢你对我这么坦诚。To be honest，I dont agree with what you said.坦白说，我不赞成你说的。It is very honest of you to tell the truth.你说出了真相，真是坦白诚实。honesty n诚实，正直honestly adv.的确；以正直的方式honestly speaking 老实说She answered all my questions with her usual honesty.她像平

8、常一样老老实实地回答了我的所有问题。Honestly speaking，I dont think his work is good.老实说，我认为他工作的不好。 1.Would you please lend me ten pounds?_，Ive got no money with me today.Im so sorry.ATo be fair BTo be sureCTo be careful DTo be honest【解析】在对方向“我”借钱时，“我”坦率地说出身上没钱，并表示歉意，应选D，意为“说实话，老实说”。【答案】D argue v. 争论；主张 argue with sb.

9、about (over) sth.同某人争论某事argue for /against赞成 /反对argue o /out of doing sth.说服某人做 /不做某事argue that clause主张，认为an argument for /against sth.支持 /反对某事的观点They argued for their rights of freedom.他们据理力争言论自由的权利。He is always ready to argue about politics with George.他随时准备与乔治争论政治问题。 debate with sb.about /

10、over sth.与某人辩论某事quarrel with sb.about /over sth.为某事与某人争吵persuade sb.to do sth.说服某人做某事(劝说成功)persuade o /out of doing sth.说服某人做 /不做某事advise sb.to do sth.建议某人做某事(劝说不一定成功)They are debating about the punishment for criminals.他们就如何惩处犯罪分子在进行争论。My parents advised me not to go out alone at night.父母建议我夜

11、间不要单独外出。 2.All his friends argued him_leaving his job，but he insisted on having a change.Awith BaboutCout of Dinto【解析】argue sb.out of doing sth.意为“说服某人不做某事”。【答案】C3They argued_the matter the whole afternoon，and at last agreed_the date for the next meeting.Awith；with Bon；onCabout；on Dover；over【解析】本题考查

12、点之一是短语argue about“就争论”，其二是agree on“(双方)就达成共识”。【答案】C Survive vt.幸免于；比活得还长；vi. 幸存 survive sth.经历某事后还活着，幸免于survive sb.by.比某人多活(时间)He survived his wife by 10 years.他比他的妻子多活了10年。Luckily the family survived the earthquake on May 12th.很幸运，这一家人在经历了“512”地震后都活了下来。Few buildings near the coast could survive aft

13、er the tornado struck the area.在龙卷风侵袭这一地区后，靠近海岸线的建筑物所剩无几。 survival n. 幸存，残存survivor n. 幸存者，生还者The film Titanic is based on an experience of a survivor.电影泰坦尼克号是根据一个幸存者的经历而摄制的。 4.He was one of the lucky people who_the plane crash.Asurvived Bsurvived inCsurvival Dsurvived after【解析】survive是及物动词，意为“幸免于”，

14、后接宾语。【答案】A share v. 共用；分享;n.份额 share sth.with (between，among) sb.与共用share sth.(out) between /among和分享；把分给share (in) sth.有同样的感情(或想法、经历等)；共同承受(in后跟抽象名词)take /bear ones share of 负责某人的一份We shared the pizza between the four of us.我们四个人把那份比萨饼分着吃了。Would you like to share your experience with the rest of th

15、e group？你愿意把你的经验告诉组里的其他人吗？She shares(in)my troubles as well as(in)my joys.她和我苦乐共享。 spare time /money for sb.为抽出时间(钱)spare sb.time /moneyspare no pains/effort doing /to do不遗余力地做Can you spare me a few minutes of your time?我能耽搁你几分钟吗？ 5.Let Harry play with your toys as well，Clareyou must learn to_.Asupp

16、ort BcareCspare Dshare【解析】第一句的意思是“克莱尔，让哈里也玩你的玩具”，后一句对前句进行解释，进一步申明“你必须学会分享”，所以动词share符合题意。【答案】D6Five years ago，no one could imagine that the company was to hold such a great_in the world market.Ashare BtradeCmajority Dview【解析】句意为：五年前，谁也没想到那家公司会在国际市场上占有这么大的“份额 (share)”。【答案】A equal v.，adj.& n.同等；平等的；相等

17、的人或物 equal sb./sth.in 在方面与某人 /某物相等be equal to (doing) sth.与相等；胜任on equal terms with sb.与某人地位相等ones equal at skiing滑雪对手equally adv.平等地；equality n平等None of us can equal her at present.目前没有人比得上她。Now that she has been promoted，she is on equal terms with her exboss.既然她已晋级，就和原先的上司平起平坐了。In fact teaching ex

18、perience is equally as valuable as theory.事实上教学经验与理论同样有价值。 be similar to与相似be the same.as像一样be superior to比优秀；优于be junior to比年龄小be senior to比年龄大As we know，this cloth is superior to that.我们知道，这种布比那种好。 7.They are of_height，but I think Mary_the job.Aequally；is equal Bequal；is equal toCequal；equals Dequ

19、ally；is equalled【解析】be equal to the job 称职，其中to是介词；equal为形容词，修饰名词height。【答案】B8In learning a language，it is important to build up your vocabulary._important is to master some reading skills.AEqually BGenerallyCSimilarly DNamely【答案】A alone adj.& adv.独自；仅仅；只有 aloneby oneself独自all alone独自，一个人leave /let

20、sb./sth.alone听任，别打扰let alone更不用说Carol felt all alone in the world.卡罗尔感到自己在世界上无依无靠。Man alone has the gift of speech.只有人类有语言天赋。I havent decided on the menu yet，let alone bought the food.我还没有决定吃什么菜呢，更不必说买好了。 alone与lonely用法比较：alone是表语形容词，可作后置定语、表语和补足语。lonely “孤独的，荒凉的”只作形容词，可作表语或定语。You will feel lonely w

21、ithout friends.没有朋友你会感到孤独。 9.用alone或lonely正确形式填空(1)The old man lives in a_house in the forest_.(2)Though he is_at home，he doesnt feel_，for he has many things to do.(3)The baby cant walk，let_run.(4)Leave the machine_；its dangerous.【答案】(1)lonely；alone(2)alone；lonely(3)alone(4)alone Majority n.大多数；大部分

22、the/a majority大多数(作主语时，谓语可单可复)the /a majority of复数名词，大多数(most of.)in the majority为多数the minority (of) 少数Obama won the general election by a majority.奥巴马以多数票赢得了这次大选。 major adj.主要的(minor次要的)；vi.主修(in) My father majored in maths at college.我爸爸大学主修的是数学。The majority were /was in favour of the plan.多数人赞成这

23、个计划。Girls are in the majority in my class.我班女生占多数。 10.单词拼写Dont worry about the present situation in the world.The m_of people prefer peace to war.【答案】majority situation n. 地点，场合；境况，形势，处境 situation后面可接where(in which)引导的定语从句，表示“处于某种局面或形势”。in a.situation在情况下get into(out of)a difficult situation陷入(摆脱)困难

24、的状况cope /deal /do with the situation应付情况save the situation挽回局势Please think of a situation where this word can be used.请想出一个使用该词的场合。 situation，condition，state与circumstance用法比较：(1)situation强调位置、处境、形势、局面等，它所指的地点更注重考虑周围的环境，还指抽象的、对某人或社会有影响的条件、事实、事件的总和。(2)condition多强调状况，指由于一定的原因、条件或环境所产生的特定情况。(3)state指人或物

25、在外观、心灵、健康方面的自然“状态或情况”，常与不定冠词连用，只有单数形式，与介词in连用。(4)circumstance多指周围的情况和某事发生时的情况。He found himself in a difficult situation.他发现自己处境艰难。The condition of his health prevented him from going abroad.他的健康状况使他不能出国。Today the patient remained in a good state on mind.今天病人仍然心情舒畅。Changing social and political circu

26、mstances forced him to leave the country.正在变化的社会和政治环境迫使他离开了这个国家。 1 1.School children must be taught how to deal with dangerous_.Astates BconditionsCsituations Dpositions【答案】C compare v.& n.比较 compare.with /to把与比较compare.to把比做compare notes交换意见beyond (without) compare无与伦比in (by) comparison with与比较起来Co

27、mpare this with that，and you will see which is better.把这个和那个比较一下，你就可以看出哪个更好。We often compare children to flowers of our country.我们经常把孩子比做祖国的花朵。 compared to /with和比较(过去分词作状语，常放在句首或句尾)Compared to many people，she was really very fortunate.和很多人相比，她的确很幸运。 12.Production rose_10% in April，_the same month o

28、f last year.Ain；compared to Bby；compared withCin；compared with Dby；comparing to【解析】表示“增加、减少等数量差别时”之意时，常用by，表“上升了10%”之意。compared to (with)位于句尾或句首，意为“和比较”。【答案】B13When_different cultures，we often pay attention only to the differences without noticing the many similarities.Acompared Bbeing comparedCcomp

29、aring Dhaving compared【解析】考查状语从句的省略形式。现在分词的逻辑主语we和compare之间存在主动关系，故用现在分词形式，相当于：When we compare different cultures，we.句意为：当我们比较不同文化时，我们经常只注意文化的差异，而忽视了文化的很多相似之处。【答案】C trade n.& v.贸易；商业；做生意；进行交易 international trade国际贸易trade sth.for sth.以某物换取某物trade sth.with sb.trade sth.with sb.in sth.同某人交换某物He is in t

30、he furniture trade.他从事家具贸易。We have been trading with them in grain.我们一直在和他们进行粮食交易。 exchange sth.for sth.用换exchange sth.with sb.同某人交换 /交流in exchange for (as an exchange for)换取Hes giving her French lessons in exchange for her teaching him English.他教她法语，换取她教他英语。 14.They had to _ oil _ food，or they woul

31、d go hungry.Achange；into Bexchange；withCtrade；with Dtrade；for【解析】trade.for.表示“用与交换”，是固定搭配，它与exchange.for.同义。【答案】D difficulty n.困难 have difficulty (trouble) with sth.就某事来说有困难have difficulty (in) doing sth.做某事有困难Theres difficulty (in) doing sth.做某事有困难do sth.with difficulty艰难地做某事overcome ones difficult

32、y /difficulties克服困难Its difficult (for sb.) to do sth.(某人)做某事有困难find it difficult to do sth.发现做某事有困难Do you have any difficulty with your work?你工作有困难吗？I had great difficulty (in) explaining to the foreigner how to get to the Summer Palace.我费了很大劲才向那个外国人说清楚如何去颐和园。Its difficult for so few people to do so

33、 much work.要如此少的人干那么多活很困难。 have a hard time (in) doing sth.做某事很艰难take great trouble to do sth.不辞劳苦做某事The monitor took great trouble to help us out.班长费尽周折帮我们解决困难。 15.You can hardly imagine what great difficulty we had_the task.Afinish Bto finishCfinishing Dhaving finished【解析】该题是have difficulty (in) d

34、oing sth.结构的变形形式。【答案】C total n.总数;adj. 总的；v.合计 a total of总共in total合计；共计(altogether)total (up) to总额为(add up to)A total of 20,000 people visited the castle on the first day when it was open to the public.城堡对公众开放的第一天，总共有两万人前来参观。There were probably about 40 people there in total.那里总共可能有40人左右。 the numbe

35、r of 的数量；a number of许多add up累计起来；add to增加(困难、友谊等)The new building will add to the beauty of our school.新大楼会使我校更美。The number of our students is increasing.我们的学生人数在增加。 16.完成句子His whole school education_(总共仅有两年时间)【答案】totaled (added) up to no more than two years in order to 为了，以便 in order (not) to do.为了

36、(不)做so as to do.为了做(不放句首)to do.为了做(普通用语)in order that /so that从句 为了She arrived early so as to get a good seat.她早早到场，好找个好位置。In order not to miss such a good chance，Mr Smith got up earlier than ever and caught the first bus to town.为了不错过这次好机会，史密斯先生起得比以往都早并搭上了第一趟进城的公共汽车。She set out early in order that

37、she could catch the first bus.为了赶上第一班车，他早早出发了。 so.as to do如此以至于做such.as to do如此以至于做He was so slow as to be caught by his enemy.他行动那么慢，结果被敌人抓住了。 17.All these gifts must be mailed immediately_in time for Christmas.Ain order to have received Bin order to receiveCso as to be received Dso as to be receiv

38、ing【解析】所有的礼物应立即被寄出去，当然是为了使它们及时被收到。“in order to”和“so as to”都表目的，但“receive” 和“gift”之间应是被动关系，所以so as to be received对。【答案】C except for 除了之外 except for用于表示对主要部分的肯定和对局部的否定。它不表示同级别事物之间的关系；except for后的词往往是主语的一部分或者是主语的某种属性。Smith is a good man，except for his bad temper.史密斯是个好人，只是脾气不好。The movie was good except

39、 for its ending.这部电影除了结局之外都很好。Mother wouldnt give him any money except for books and stationery.除了买书和文具外，妈妈不给他任何钱。 besides，except，except for，except that与apart from用法比较：(1)besides表“除了还有”的意思。语义上相当于as well as，in addition to。另外besides还作副词，意为“除此之外”。(2)except/but表示“除了，除去”的意思，前后主语属同一类。All are here except X

40、iao Li.除了小李外，大家都来了。(3)except for也表示“除了”的意思，但主要是指“对某个事物作总体的评述之后排除其细节，”前后的内容不是同一类。在句首时常用except for代替except。(4)except that表示“除了，只是”，后跟从句。(5)apart from可表示“除了以外还有”，此时apart frombesides，也可表示“除了”，此时apart fromexcept(for)。Bananas have a great deal of sugar apart from water.香蕉除了水分之外还含有大量糖分。 18.用except，except t

41、hat或except for填空(1)The wall was bare_a map of the world.(2)The pair of trousers fits me well_the waist of it is a little too small.(3)All the essays are good_Johns.(4)There was silence in the room，_the tick of the clock on the wall.【答案】(1)except for(2)except that(3)except(4)except for end up结束，告终 en

42、d up with用来结尾，以来结束end up in以(状况)而告终end up as最后成了，最后是其中up可以省略，后接with，强调用工具结束，后接in强调以某种状况、状态结束，接as指以怎样的身份结束。The Long March ended up with victory for us.长征以我们的胜利而告终。If you work on like this，you will end up in hospital.如果你像这样干下去，你最终会住进医院去的。He ended up as the head of the company.他最后成为这家公司的老板。 begin withs

43、tart with以开始to begin /start withfirst (of all)首先To begin with，Ill introduce myself to every one of you.首先，我向大家做一下自我介绍。 19.用适当介词填空(1)The battle ended_a victory.(2)Our monitor ended_an excellent graduate.(3)He ended his letter_good wishes to the family.【答案】(1)in(2)as(3)with come about 生，产生 come abouth

44、appen /occur(具有偶然性)发生How does it come about that.?怎么会发生这样的事情呢？I didnt know how the mistake had come about.我不知道怎么会出这样的错误。How does it come about that he is so badly off when he earns quite a good salary？他挣那么多钱，却那样贫穷，怎么会这样呢？ come about，happen，take place与break out用法比较：(1)come about “发生，产生”，指要求解释或说明事情发生的

45、理由。经常与how连用。(2)happen “发生”，常用词汇，指偶然的、意外的、具体客观事物的发生或出现，尤其指自发的未能预见的事情发生。(3)take place “发生”，指事件或事故的发生是在预料中的并非是偶然的，进而引申为按计划“进行，举行”。(4)break out指战争、火灾、疾病等的突然“发生、爆发”。How did these differences come about?这些差别是怎样产生的？Luckily the earthquake didnt happen in the center of the city.幸亏地震没有发生在市中心。Great changes hav

46、e taken place in our school in the past few years.最近几年我们学校发生了很大变化。A fire broke out during the night.夜间突然发生了火灾。 20.Its already ten oclock.I wonder how it_that she was two hours late on such a short trip.Acame over Bcame outCcame about Dcame up【解析】came about在此表示“发生”，wonder后接宾语从句，该从句中it作形式主语，that引导的句子为

47、真正的主语。句意为：现在已经是十点钟了。我不知道这是怎么回事，在这么短的旅行中，她竟迟到了两小时。【答案】C Rock music is OK,and so is skiing. 摇滚音乐还行，滑雪也不错。 So助动词主语，上句所述肯定情况也适应另一主语Neither /nor助动词主语，也不So it is /was with.It is /was the same with.，也是如此。(前面陈述的是两种或两种以上的情况)If you go to school early tomorrow，so shall I.如果明天你上学早，我也早去。Mary was born in Australi

48、a and she lived in the United States.So it was with Jane.玛丽在澳大利亚出生，在美国居住。简也是。 So主语助动词，对上句提及的情况给予肯定，so译为“确实”。She can speak French.她会讲法语。So she can.她确实会讲法语。 21.If Joes wife wont go to the party，_.Ahe will either Bneither will heChe neither will Deither he will【解析】考查倒装句。其形式为neither /nor助动词主语。【答案】B22(20

49、08年辽宁卷)Bill wasnt happy about the delay of the report by Jason，and_.AI was neither Bneither was ICI was either Deither was I【解析】句意为：比尔对贾森做报告推迟这件事表示不高兴，我也不高兴。根据题意可知，我也不(高兴)，neither /nor系动词 /助动词 /情态动词sb.表示某人也不(同意或赞成上文的观点)，易把either看做neither，无either was I 句式，故选B。【答案】B One day Chuck is on a flight across

50、 the Pacific Ocean when suddenly his plane crashes. 一天，查克飞越太平洋时，他的飞机突然因故而坠毁了。 be doing sth.when. 正在做某事，这时be just about to do sth.when.正要做某事，这时be on the point of doing sth.when.had hardly done sth.when.刚做了某事，这时I was watching TV when a boy rushed into the door.我正在看电视，正在这时(突然)有个孩子冲进来。I was about to lea

51、ve when it began to rain.我正要离开，这时(突然)下起雨来。Hardly had I got seated when the class began.我刚坐下就开始上课了。 while作并列连词时，表转折对比，意为“而”。I drink black coffee while he prefers it with cream.我爱喝黑咖啡，而他喜欢加奶油的。 23.She had just finished her homework_her mother asked her to practise playing the piano yesterday. Awhen Bw

52、hile Cafter Dsince【解析】句意为：昨天她刚做完作业，她妈妈就让她练钢琴。when在本句中作并列连词，意为：and at that time。while作并列连词，表示“对比转折”；after为从属连词或介词，意为“在之后”；since自从时候，既然。【答案】A24(2009年安徽卷)I wonder how much you charge for your services.The first two are free_the third costs $30.Awhile BuntilCwhen Dbefore【解析】考查连词的用法。根据句意，这里表示前后句之间的对比，所以用

53、while，表示“而”。句意为“前面两项服务是免费的，而第三项收费30美元”。【答案】A Chuck is a businessman who is always so busy that he has little time for his friends. 查克是企业家，他总是非常忙以至于没有时间会见朋友。 so that从句He is so funny a man that we all like him.他如此有趣以至于我们都喜欢他。There were so many cars in the street that I couldnt get through.路上有如此多的车，我过不

54、去。He left so quickly that we didnt have time to say goodbye.他走得很匆忙，我们都没有时间和他道别。 such that从句他和蔼可亲，以至大家都喜欢他。They are such small shoes that I cant wear them.这些鞋都太小，我穿不上。It is such fine weather that we will go swimming.今天天气那么好我们将去游泳。 25.Pop music is such an important part of society_it has even influenc

55、ed our language.Aas BthatCwhich Dwhere【解析】考查such.that “如此以至于”结构。【答案】B26(2008年全国卷)The weather was_cold that I didnt like to leave my room.Areally BsuchCtoo Dso【解析】句意为：天气是那么冷以至于我都不想离开房间。so.that.如此以至于，引导结果状语从句。such修饰名词，排除B。A、C和that不搭配。【答案】D What is it that Joe cant find in the bathroom? 乔在浴室里找不到的是什么？ I

56、t is /was被强调部分that.(强调句型的肯定式)特殊疑问词is /was itthat.(强调句型的特殊疑问式)It was in the train that I got to know her.我是在火车上认识她的。It was not until the war ended that he returned to his motherland with his family.直到战争结束他才和家人回到了他的祖国。Where was it that you got to know her?你是在哪里认识她的？ 强调人时，可用who代替that；若被强调的部分如果是原句的主语，wh

57、o (或that) 后的谓语在人称和数上应和原句的主语保持一致。原句：I am leaving for London next week. 我下星期出发去伦敦。It is I who am leaving for London next week.(强调主语I) 27.I just wonder_that makes him so excited.Awhy it does Bwhat he doesChow it is Dwhat it is【解析】本题题干相当于I just wonder what makes him so excited的意义，所以该题实际上为强调句型的特殊疑问形式，wha

58、t为宾语从句的连接词且在从句中作主语。【答案】D With so many people communicating in English every day,we can see it will be more and more important to have a good knowledge of English. 因为，每天有这么多人用英语进行交流，我们可以断定具有丰富的英语知识将愈来愈重要。此结构在句中主要作状语，也可作定语。He soon fell asleep with the light still burning.他很快就开着灯睡着了。The thief was broug

59、ht to the front with his hands tied behind.小偷被带到前面来，双手被捆在后面。The city lies in a valley with high mountains all around it.那座城位于群山环抱的山谷中。 with的反义词是without；因此，without也可用于此种结构。I felt nervous at the debate，without anything to say.辩论会上无话可说，我感到很紧张。 28.I couldnt do my homework with all that noise_.Agoing on

60、Bgoes onCwent on Dto go on【解析】with所引导的结构在句子中作伴随状语。“withn.doing/done/介词短语”为固定结构。noise与go on之间为主动关系，故选A。【答案】A29(2008年福建卷)They have no idea how she finished the relay race_her foot wounded so much.Afor BwhenCwith Dwhile【解析】句意为：你根本就无法体会，在脚伤得那么厉害的情况下她是怎样完成接力比赛的。这里是一个withn./pron.done/adj.的复合结构。要注意her foot