时间:2018-12-30 作者:英语课 分类:英语四级听力练习集锦


英语课

[00:01.95]Model Test Three 


[00:03.93]Section A 


[00:05.45]Directions: In this section, 


[00:09.28]you will hear 8 short conversations and 2 long conversations. 


[00:14.97]At the end of each conversation, 


[00:18.03]one or more questions will be asked about what was said. 


[00:22.30]Both the conversation and the questions will be spoken only once. 


[00:27.87]After each question there will be a pause. 


[00:31.70]During the pause, you must read the four choices 


[00:36.63]marked A) , B) , C) and D) , and decide which is the best answer. 


[00:43.52]Then mark the corresponding letter on Answer Sheet 2 


[00:49.10]with a single line through the centre. 


[00:51.83]Now let’s begin with the 8 short conversations. 


[00:56.93]11.W: Freedom Travel. How may I help you? 


[01:03.64]M: Yes. I’d like to make a flight reservation 


[01:07.13]for the twentythird of this month. 


[01:09.43]Q: Who is the man most probably talking to? 


[01:30.14]12. M: Where is the umbrella that was in the closet 


[01:35.64]I have to return it to my boss. 


[01:38.15]W: I gave it to your brother. I’ll get it back. 


[01:41.43]Q: Whom does the umbrella belong to? 


[02:00.83]13. W: How is Kate getting along at the hospital? 


[02:05.65]M: She is very happy. She’s always dreamt of becoming a nurse, 


[02:11.22]now it’s come true. 


[02:13.98]Q: What can we learn about Kate? 


[02:31.04]14. W: I’m going to the zoo to make some sketches 1 of elephants today. 


[02:39.57]M: May I go with you? I have the same assignment. 


[02:43.62]Q: What do we learn about the speakers from the conversation? 


[03:04.97]15. W: I think that Jane is one of the best typists I know. 


[03:10.67]M: I can’t agree with you more. 


[03:13.18]Q: What does the woman think of Jane? 


[03:34.40]16. W: Maybe we should take Front Street this morning. 


[03:39.21]The radio announcer said that the traffic was very heavy on the freeway. 


[03:44.24]M: Well, if he says to take the Front Street we should go the other way. 


[03:50.03]Q: What is the man’s attitude to the radio announcer? 


[04:09.21]17. M: What a wonderful party! Everyone is having a good time. 


[04:18.51]W: If only the children were here! 


[04:21.45]Q: What is implied in the conversation? 


[04:41.06]18. W: I’d like to have two of these pictures. 


[04:47.51]Will I save any money if I buy a pair? 


[04:50.90]M: Yes. They are usually three dollars a piece, 


[04:55.91]but you can have two of them for five dollars. 


[04:58.53]Q: How much does one picture cost? 


[05:16.62]Now you will hear the 2 long conversations. 


[05:22.42]Conversation One 


[05:24.09]W:  Hey,buddy. Are the fish biting today? 


[05:27.15]M:  They sure are. They are practically jumping in the boat. 


[05:31.42]W:  Is that so? Well, what kind of bait are you using? 


[05:35.57]M:  We’re catching 2 most of our fish with lures 3


[05:38.96]W:  Lures? We’re using live bait over here. 


[05:42.24]M:  What kind of live bait are you using? Worms or minnows(小鱼)? 


[05:46.18]W:  We’re using worms. 


[05:48.04]M:  Are you having any luck with the worms? 


[05:50.23]W:  No, we haven’t even gotten a nibble 4 today. 


[05:53.84]M:  That’s too bad. Why don’t you try using lures instead? 


[05:58.32]W:  I would, but I don’t have any in my tackle box. 


[06:02.04]M:  That’s too bad. Well, where are you fishing? 


[06:06.08]W:  I’m just fishing from the shore. How about you? 


[06:09.26]M:  We went out in our boat. 


[06:11.56]I have a favorite fishing hole out there. 


[06:13.96]W:  Sweet.Can you tell me where it is? 


[06:16.69]M:  Oh no,I can’t tell you. It’s a secret. 


[06:21.32]Say, why don’t you go over by the Lily Pads and try fishing there? 


[06:24.25]W:  Do you think that’s a good spot? 


[06:26.66]M:  Sure,I used to catch my legal limit of bass 5 there all the time. 


[06:31.25]W:  Thanks.I think I’ll go check that out now. 


[06:34.31]M:  Good luck.I hope you catch some fish. 


[06:37.48]Questions 19 to 21 are based on the conversation you have just heard. 


[06:46.23]19. What are the two speakers doing? 


[07:05.94]20. What kind of bait is the second speaker using? 


[07:26.38]21. Where can the first speaker find a good fishing spot 


[07:32.57]according to the second speaker? 


[07:46.71]Conversation Two 


[07:51.74]W: Will you be having Thanksgiving at home 


[07:54.91]or will you be going to your mother’s place? 


[07:56.77]M: Mom and Dad want to have all the families back home this year, 


[08:00.71]so that’s where we’ll be. How about you? 


[08:03.34]W: I plan on having everyone over to my place this year. 


[08:07.30]It really is a lot of work, 


[08:09.49]but I love having my family all together and I like to entertain. 


[08:13.75]M: You are such a good cook. 


[08:15.83]I’ll bet your family loves coming to your place, too. 


[08:19.00]W: I don’t do all the cooking myself. 


[08:21.73]I think everyone enjoys it a little more 


[08:25.23]if they each bring something they have made. 


[08:28.41]M: Do you have traditional dishes that you serve every year. 


[08:31.45]I know our family does. 


[08:33.20]W: Yes, we do. We always have turkey and dressing, 


[08:37.14]mashed potatoes and gravy 6 and, of course, sweet potatoes. 


[08:41.30]I think those are traditional dishes for most families. 


[08:45.56]There is a fruit salad that we have every year 


[08:49.06]and every one looks forward to my pumpkin 7 pie. 


[08:52.56]M: What do the men in your family do 


[08:55.19]while the women are doing the cooking? 


[08:56.28]W: It’s the same every year—football. 


[08:59.24]They watch one game after another on Thanksgiving. 


[09:03.07]I tell them that they ought to go out and get some exercise, 


[09:07.00]but they just can’t get away from the tube. 


[09:09.40]They’re glued to it! 


[09:11.16]M: A lot of men are like that. 


[09:13.01]In my family we go bowling 8 together after dinner. 


[09:15.86]It’s a fun thing to do together as a family. 


[09:18.92]After a couple of games, 


[09:20.78]we go back home and eat the leftovers 9


[09:22.86]W: I like that about thanksgiving. 


[09:24.72]We cook so much food that we have leftovers to last for several meals 


[09:29.76]and I don’t have to cook. 


[09:33.53]Questions 22 to 24 are based on the conversation you have just heard. 


[09:38.67]22. Where will the first speaker spend Thanksgiving this year? 


[10:02.72]23. What will the first speaker cook for dinner? 


[10:19.34]24. What does the second speaker’s family usually do after dinner? 


[10:43.37]Section B 


[10:44.46]Directions: In this section, you will hear 3 short passages. 


[10:51.57]At the end of each passage, you will hear some questions. 


[10:55.73]Both the passage and the questions will be spoken only once. 


[11:00.32]After you hear a question, you must choose the best answer 


[11:04.81]from the four choices marked A) , B) , C) and D). 


[11:10.06]Then mark the corresponding letter on Answer Sheet 2 


[11:14.87]with a single line through the centre. 


[11:19.02]Passage One 


[11:20.01]It was years since I had visited my hometown 


[11:24.38]and I was determined 10 to enjoy my stay. 


[11:27.77]I went to see my old friend, Tom Clark who, among other things 


[11:34.36]was a member of the Local Council. 


[11:36.50]At the time, Tom was busy making arrangements 


[11:41.42]for a distinguished 11 writer to give a talk 


[11:44.48]on modern literature at the town library. 


[11:46.89]As the subject interested me a great deal, 


[11:50.82]I gladly accepted Tom’s invitation to go with him. 


[11:55.20]Tom was going to introduce the guest speaker on that evening 


[12:00.72]we went to the library to meet him. 


[12:03.02]Since he had not yet arrived 


[12:06.03]I left Tom and went into the Reading Room 


[12:10.30]where a large audience had already gathered. 


[12:13.03]I was disappointed to find 


[12:15.39]that I did not know a single person there. 


[12:18.34]Just before the talk was due to begin, 


[12:21.85]I saw Tom waving to me from the doorway 12


[12:24.80]I went to him immediately, as he looked very worried. 


[12:30.05]He explained that 


[12:31.68]he had just received a telephone message from the writer’s secretary. 


[12:35.73]Our guest speaker had missed the train and would be unable to come! 


[12:40.54]While we were talking about the problem, 


[12:44.15]Tom suddenly asked me if I would mind acting 13 as the speaker. 


[12:48.42]I hardly had time to think about the matter 


[12:52.47]when I found I was being led into the Reading Room 


[12:55.19]to address the waiting audience! 


[12:57.82]Questions 25 to 28 are based on the passage you have just heard. 


[13:05.15]25. Who was Tom Clark? 


[13:27.48]26. What happened to the author when he first went into the Reading Room? 


[13:48.73]27. Why did Tom look worried before the talk was supposed to begin? 


[14:10.59]28. Which of the following is implied in the passage? 


[14:31.84]Passage Two 


[14:35.78]You have ever heard the old saying, 


[14:39.39]“never judge a book by its cover”. 


[14:42.51]This is a good rule to follow when trying to judge the intelligence of others. 


[14:49.07]Some people have minds that shine only in certain situations. 


[14:54.43]A young man with an unusual gift in creative writing 


[14:59.03]may find himself speechless in the presence of a pretty girl. 


[15:04.06]He searches awkwardly for words and does not talk smoothly 14


[15:10.51]But don’t make the mistake of thinking him stupid. 


[15:14.12]With a pen and paper he can express himself very well. 


[15:19.04]Other people may fool you into overestimating 15 their intelligence 


[15:24.29]by putting up a good appearance. 


[15:27.75]A student who listens attentively 16 and takes notes in class 


[15:31.80]is bound to make a favorable impression on his teachers. 


[15:36.91]But when it comes to exams, he may score near the bottom of the class. 


[15:43.82]The main idea is that you can’t judge someone by appearance. 


[15:48.96]The only way to determine a person’s intelligence is to get to know him. 


[15:54.98]Then you can observe how he reacts to different situations. 


[16:00.23]The more situations you observe, 


[16:03.07]the more accurate your judgment 17 is likely to be. 


[16:07.43]So take your time. Don’t judge the book by its cover. 


[16:11.94]Questions 29 to 31 are based on the passage you have just heard. 


[16:19.82]29.  What is the main idea of the passage? 


[16:43.07]30.  What do you know about the young man mentioned in the passage? 


[17:04.34]31.  What does the speaker want to say by giving the example of the student? 


[17:27.56]Passage Three 


[17:30.73]For more than six million American children, 


[17:34.45]coming home after school means coming to an empty house. 


[17:38.94]Some deal with the situation by watching TV. 


[17:42.76]Some may hide. But all of them have something in common. 


[17:48.23]They spend part of each day alone. 


[17:51.40]They are called latchkey children. 


[17:54.47]They’re children who look after themselves while their parents work. 


[17:59.17]And their bad condition has become a subject of concern. 


[18:03.76]A headmaster of an elementary school said 


[18:08.25]that there was a school rule against wearing jewelry 18


[18:11.64]A lot of kids had chains around their necks with keys attached. 


[18:16.23]He was constantly telling them to put them inside shirts. 


[18:21.15]There were so many keys. Slowly, he learned they were house keys. 


[18:27.06]He began talking to the children who had them. 


[18:31.43]Then he learned of the impact working couples and single parents 


[18:36.62]were having on their children. 


[18:38.92]Fear is the biggest problem faced by children at home alone. 


[18:43.51]Many had nightmares and were worried about their own safety. 


[18:48.00]The most common way latchkey children deal with their fears is by hiding. 


[18:54.78]It might be in a bathroom, under a bed or in a closet. 


[19:00.36]The second is TV. They’ll often play it at high volume. 


[19:06.59]Most parents don’t realize the effect on their children 


[19:11.41]when they leave their children alone. 


[19:13.81]Questions 32 to 35 are based on the passage you have just heard. 


[19:24.57]32. What is the meaning of “latchkey” children? 


[19:43.83]33. What did the headmaster ask the children to do? 


[20:05.20]34. How do the children feel when they’re at home by themselves? 


[20:28.24]35. Which conclusion can we draw from the passage? 


[20:45.74]Section C 


[20:50.23]Directions: In this section, you will hear a passage three times. 


[20:58.32]When the passage is read for the first time, 


[21:01.50]you should listen carefully for its general idea. 


[21:05.00]When the passage is read for the second time, 


[21:08.82]you are required to fill in the blanks numbered from 36 to 43 


[21:15.82]with the exact words you have just heard. 


[21:18.77]For blanks numbered from 44 to 46 you are required 


[21:24.58]to fill in the missing information. 


[21:26.76]For these blanks, you can either use the exact words 


[21:31.90]you have just heard or write down the main points in your own words. 


[21:37.15]Finally, when the passage is read for the third time, 


[21:41.52]you should check what you have written. 


[21:44.89]Now listen to the passage. 


[21:47.73]Nature has supplied every animal except man 


[21:52.00]with some covering for his body 


[21:54.52]such as fur, feathers, hair, or a thick hide. 


[21:58.78]But man has nothing but a thin skin, 


[22:01.51]and for thousands of years human beings 


[22:04.68]must have wandered about the world with no other covering — 


[22:07.86]though the earliest men may perhaps have been hairier than modern man. 


[22:12.34]It is only when we begin to think about it a little 


[22:16.06]that we realize that clothes are worn for a great many reasons 


[22:19.56]that have nothing to do with the climate, 


[22:22.08]or with our need for warmth. 


[22:24.05]For instance, we wear clothes to some extent in order to decorate ourselves 


[22:29.51]—to make ourselves, if possible, look more graceful 19 than we are. 


[22:33.78]Even the plainest clothes worn by civilized 20 people have their buttons, 


[22:38.70]collars and so forth 21 arranged in such a way 


[22:41.87]that they form a kind of decoration, 


[22:44.06]and the material itself is of a kind and color that we think suits us, 


[22:48.77]and is cut or arranged in a way that we think looks nice— 


[22:52.70]though ideas about what looks nice change very much from time to time. 


[22:57.19]Besides decorating us our clothes have to link us up with the people 


[23:01.78]amongst whom we live. 


[23:03.20]We feel uncomfortable if they do not “look right”— 


[23:06.26]if they are not similar to those 


[23:08.67]which other people of our age, sex, country and period are wearing. 


[23:12.94]Sometimes, even in civilized countries, 


[23:15.89]people wear some article of clothing, or some jewel of charm. 


[23:19.71]These are because they believe 


[23:22.01]that it will bring them luck or protect them from evil or illness 


[23:26.17]or because it is connected with their religious beliefs. 


[23:28.65]Now the passage will be read again. 


[23:34.39]Nature has supplied every animal except man 


[23:38.76]with some covering for his body 


[23:41.39]such as fur, feathers, hair, or a thick hide. 


[23:45.32]But man has nothing but a thin skin, 


[23:48.28]and for thousands of years human beings 


[23:51.34]must have wandered about the world with no other covering — 


[23:54.41]though the earliest men may perhaps have been hairier than modern man. 


[23:58.78]It is only when we begin to think about it a little 


[24:01.95]that we realize that clothes are worn for a great many reasons 


[24:06.11]that have nothing to do with the climate, 


[24:08.84]or with our need for warmth. 


[24:10.92]For instance, we wear clothes to some extent in order to decorate ourselves 


[24:15.95]—to make ourselves, if possible, look more graceful than we are. 


[24:21.09]Even the plainest clothes worn by civilized people have their buttons, 


[24:25.58]collars and so forth arranged in such a way 


[24:28.42]that they form a kind of decoration, 


[24:30.93]and the material itself is of a kind and color that we think suits us, 


[24:35.97]and is cut or arranged in a way that we think looks nice— 


[24:39.79]though ideas about what looks nice change very much from time to time. 


[24:44.39]Besides decorating us our clothes have to link us up with the people 


[24:48.43]amongst whom we live. 


[25:37.99]We feel uncomfortable if they do not “look right”— 


[25:43.34]if they are not similar to those 


[25:45.75]which other people of our age, sex, country and period are wearing. 


[26:40.88]Sometimes, even in civilized countries, 


[26:43.06]people wear some article of clothing, or some jewel of charm. 


[26:47.11]These are because they believe 


[26:49.52]that it will bring them luck or protect them from evil or illness 


[26:53.56]or because it is connected with their religious beliefs. 


[27:47.21]Now the passage will be read for the third time. 


[27:50.82]Nature has supplied every animal except man 


[27:54.20]with some covering for his body 


[27:56.61]such as fur, feathers, hair, or a thick hide. 


[28:00.55]But man has nothing but a thin skin, 


[28:03.72]and for thousands of years human beings 


[28:06.78]must have wandered about the world with no other covering — 


[28:09.85]though the earliest men may perhaps have been hairier than modern man. 


[28:14.44]It is only when we begin to think about it a little 


[28:17.72]that we realize that clothes are worn for a great many reasons 


[28:21.55]that have nothing to do with the climate, 


[28:24.06]or with our need for warmth. 


[28:26.25]For instance, we wear clothes to some extent in order to decorate ourselves 


[28:31.94]—to make ourselves, if possible, look more graceful than we are. 


[28:35.98]Even the plainest clothes worn by civilized people have their buttons, 


[28:40.91]collars and so forth arranged in such a way 


[28:44.08]that they form a kind of decoration, 


[28:46.05]and the material itself is of a kind and color that we think suits us, 


[28:50.86]and is cut or arranged in a way that we think looks nice— 


[28:54.91]though ideas about what looks nice change very much from time to time. 


[28:59.39]Besides decorating us our clothes have to link us up with the people 


[29:03.77]amongst whom we live. 


[29:05.19]We feel uncomfortable if they do not “look right”— 


[29:08.47]if they are not similar to those 


[29:10.66]which other people of our age, sex, country and period are wearing. 


[29:15.14]Sometimes, even in civilized countries, 


[29:17.98]people wear some article of clothing, or some jewel of charm. 


[29:21.93]These are because they believe 


[29:24.11]that it will bring them luck or protect them from evil or illness 


[29:28.38]or because it is connected with their religious beliefs.



n.草图( sketch的名词复数 );素描;速写;梗概
  • The artist is making sketches for his next painting. 画家正为他的下一幅作品画素描。
  • You have to admit that these sketches are true to life. 你得承认这些素描很逼真。 来自《简明英汉词典》
adj.易传染的,有魅力的,迷人的,接住
  • There are those who think eczema is catching.有人就是认为湿疹会传染。
  • Enthusiasm is very catching.热情非常富有感染力。
吸引力,魅力(lure的复数形式)
  • He left home because of the lures of life in the city. 他离家是由于都市生活的诱惑。
  • Perhaps it is the desire for solitude or the chance of making an unexpected discovery that lures men down to the depths of the earth. 可能正是寻觅幽静的去处,或者找个猎奇的机会的欲望引诱着人们进入地球的深处。
n.轻咬,啃;v.一点点地咬,慢慢啃,吹毛求疵
  • Inflation began to nibble away at their savings.通货膨胀开始蚕食他们的存款。
  • The birds cling to the wall and nibble at the brickwork.鸟儿们紧贴在墙上,啄着砖缝。
n.男低音(歌手);低音乐器;低音大提琴
  • He answered my question in a surprisingly deep bass.他用一种低得出奇的声音回答我的问题。
  • The bass was to give a concert in the park.那位男低音歌唱家将在公园中举行音乐会。
n.肉汁;轻易得来的钱,外快
  • You have spilled gravy on the tablecloth.你把肉汁泼到台布上了。
  • The meat was swimming in gravy.肉泡在浓汁之中。
n.南瓜
  • They ate turkey and pumpkin pie.他们吃了火鸡和南瓜馅饼。
  • It looks like there is a person looking out of the pumpkin!看起来就像南瓜里有人在看着你!
n.保龄球运动
  • Bowling is a popular sport with young and old.保龄球是老少都爱的运动。
  • Which sport do you 1ike most,golf or bowling?你最喜欢什么运动,高尔夫还是保龄球?
n.剩余物,残留物,剩菜
  • He can do miracles with a few kitchen leftovers.他能用厨房里几样剩饭做出一顿美餐。
  • She made supper from leftovers she had thrown together.她用吃剩的食物拼凑成一顿晚饭。
adj.坚定的;有决心的
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
adj.卓越的,杰出的,著名的
  • Elephants are distinguished from other animals by their long noses.大象以其长长的鼻子显示出与其他动物的不同。
  • A banquet was given in honor of the distinguished guests.宴会是为了向贵宾们致敬而举行的。
n.门口,(喻)入门;门路,途径
  • They huddled in the shop doorway to shelter from the rain.他们挤在商店门口躲雨。
  • Mary suddenly appeared in the doorway.玛丽突然出现在门口。
n.演戏,行为,假装;adj.代理的,临时的,演出用的
  • Ignore her,she's just acting.别理她,她只是假装的。
  • During the seventies,her acting career was in eclipse.在七十年代,她的表演生涯黯然失色。
adv.平滑地,顺利地,流利地,流畅地
  • The workmen are very cooperative,so the work goes on smoothly.工人们十分合作,所以工作进展顺利。
  • Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。
对(数量)估计过高,对…作过高的评价( overestimate的现在分词 )
  • I think you're overestimating his abilities. 我看你对他的能力评价过高。
  • With hindsight, he was overestimating their desire for peace. 事后看来,他高估了他们对和平的渴望。
adv.聚精会神地;周到地;谛;凝神
  • She listened attentively while I poured out my problems. 我倾吐心中的烦恼时,她一直在注意听。 来自《简明英汉词典》
  • She listened attentively and set down every word he said. 她专心听着,把他说的话一字不漏地记下来。 来自《简明英汉词典》
n.审判;判断力,识别力,看法,意见
  • The chairman flatters himself on his judgment of people.主席自认为他审视人比别人高明。
  • He's a man of excellent judgment.他眼力过人。
n.(jewllery)(总称)珠宝
  • The burglars walked off with all my jewelry.夜盗偷走了我的全部珠宝。
  • Jewelry and lace are mostly feminine belongings.珠宝和花边多数是女性用品。
adj.优美的,优雅的;得体的
  • His movements on the parallel bars were very graceful.他的双杠动作可帅了!
  • The ballet dancer is so graceful.芭蕾舞演员的姿态是如此的优美。
a.有教养的,文雅的
  • Racism is abhorrent to a civilized society. 文明社会憎恶种族主义。
  • rising crime in our so-called civilized societies 在我们所谓文明社会中日益增多的犯罪行为
adv.向前;向外,往外
  • The wind moved the trees gently back and forth.风吹得树轻轻地来回摇晃。
  • He gave forth a series of works in rapid succession.他很快连续发表了一系列的作品。
学英语单词
absarokas
acidimeter
air-power hammer
al hawwari
alpha numerical
Alpinia purpurata
altered specialization
anachorism
astroinformatics
befoe
black ivory
brown-butter
bulla ossea
Cabulja
cardiotachoscope
cautious running
Cellano
chivvies
chrome-cobalt alloy solder
clay suspension
combfishes
commodity chemicals
compilation camera
computing control
Cpr.
Cressona
Crocidura
current maturity
cyclical sequence
czar-
dihedral wing
Dill City
dimethylarsonic acid
discharge filter
diverging shafting
esolar
Eumvcetin
exchange order
fall flat on one's face
fima
foetopathy
Frankfurter Allgemeine Zeitung
galatoglucomannan
hafnium
Hanzi font code
hard atheist
Hargesheim
heartstrings
higher horizons project
Hyatt, John Wesley
iconauthors
intolerance reactions
introgressive-hybridization
just-out
kalstone
lamb's-foot
leading counsel
ligamentum tibionaviculare
light-brown
lower pressure tank
lubricating additive
lupoma
mass-production-scale
Mather
matterenergy equivalence
means-testing
meridional fibers of ciliary muscle
mesal plates
mesopenaeus brucei
methodolgies
miss fire
Möng Hpāyak
national ballet of cuba
National Television Standards Committee
original trademark
piezoresistive material
pinheiros
PM-LCD
printed circuit manufacture
query string
red brilliant
reitzenstein
Rovigo
rubber-cup massage
Scleria radula
sigmoids
spacetime optics
spatial symmetry group
stengel process
steprocket
stone cold fox
stotland
the arts council
thermoluninescent
three way valve menifold
tree blackberry
Tripenyltin acetate
vapour compressor
vinyl foils
wiery
with difficulty
xanthoproteic