国产福利福利视频_91麻豆精品国产自产在线_中文字幕观看_欧美毛片aaa激情

大學(xué)英語六級經(jīng)典閱讀8

雕龍文庫 分享 時間: 收藏本文

大學(xué)英語六級經(jīng)典閱讀8

 The question of whether war is inevitable is one which has concerned many of the world`s great writers. Before considering this question, it will be useful to introduce some related concepts. Conflict, defined as opposition among social entities directed against one another, is distinguished from competition, defined as opposition among social entities independently striving for something which is in inadequate supply. Competitors may not be aware of one another, while the parties to a conflict are. Conflict and competition are both categories of opposition, which has been defined as a process by which social entities function in the disservice of one another. Opposition is thus contrasted with cooperation, the process by which social entities function in the service of one another. These definitions are necessary because it is important to emphasize that competition between individuals or groups is inevitable in a world of limited resources, but conflict is not. Conflict, nevertheless, is very likely to occur, and is probably an essential and desirable element of human societies.

  Many authors have argued for the inevitability of war from the premise that in the struggle for existence among animal species, only the fittest survive. In general, however, this struggle in nature is competition, not conflict. Social animals, such as monkeys and cattle, fight to win or maintain leadership of the group. The struggle for existence occurs not in such fights, but in the competition for limited feeding areas and for the occupancy(占有)of areas free from meat-eating animals. Those who fail in this competition starve to death or become victims to other species. This struggle for existence does not resemble human war, but rather the competition for the necessities of life that are insufficient to satisfy all.

  Among nations there is competition in developing resources, trades, skills, and a satisfactory way of life. The successful nations grow and prosper(繁榮); the unsuccessful decline. While it is true that this competition may induce efforts to expand territory at the expense of others, and thus lead to conflict, it cannot be said that war-like conflict among nations is inevitable, although competition is.

  26. In the first paragraph, the author gives the definitions of some terms in order to ______.

  A) argue for the similarities between animal societies and human societies

  B) smooth out the conflicts in human societies

  C) distinguish between two kinds of opposition

  D) summarize the characteristic features of opposition and cooperation

  27. According to the author, competition differs from conflict in that_______.

  A) it results in war in most cases

  B) it induces efforts to expand territory

  C) it is a kind of opposition among social entities

  D) it is essentially a struggle for existence

  28. The phrase function in the disservice of one another(Para 7, Line.1) most probably means_______。

  A) betray each other

  B) harm one another

  C) help to collaborate with each other

  D) benefit one another

  29. The author indicates in the passage that conflict_______.

  A) is an inevitable struggle resulting from competition

  B) reflects the struggle among social animals

  C) is an opposition among individual social entities

  D) can be avoided

  30. The passage is probably intended to answer the question_______。

  A) Is war inevitable?

  B) Why is there conflict and competition?

  C) Is conflict desirable?

  D) Can competition lead to conflict?

  Passage 2

  As Dr. Samuel Johnson said in a different era about ladies preaching, the surprising thing about computers is not that they think less well than a man, but that they think at all. The early electronic computer did not have much going for it except a marvelous memory and some good math skills. But today the best models can be wired up to learn by experience, follow an argument, ask proper questions and write poetry and music. They can also carry on somewhat puzzling conversations.

  Computers imitate life. As computers get more complex, the imitation gets better. Finally, the line between the original and the copy becomes unclear. In another 15 years or so, we will see the computer as a new form of life.

  The opinion seems ridiculous because, for one thing, computers lack the drives and emotions of living creatures. But drives can be programmed into the computer`s brain just as nature programmed them into our human brains as a part of the equipment for survival.

  Computers match people in some roles, and when fast decisions are needed in a crisis, they often surpass them. Having evolved when the pace of life was slower, the human brain has an inherent defect that prevents it from absorbing several streams of information simultaneously and inherent defect that prevents it from absorbing several streams of information simultaneously and acting on them quickly. Throw too many things at the brain at one time and it freezes up.

  We are still in control, but the capabilities are increasing at a fantastic rate, while raw human intelligence is changing slowly, if at all. Computer power has increased ten times every eight years since 1946. In the 1990s, when the sixth generation appears, the reasoning power of an intelligence built out of silicon will begin to match that of the human brain.

  That does not mean the evolution of intelligence has ended on the earth. Judging by the past, we can expect that a new species out of man, surpassing his achievements as he has surpassed those of his predecessor. Only a carbon chemistry would assume that the new species must be man`s flesh-and-blood descendants. The new kind of intelligent life is more likely to be made of silicon.

  31. What do you suppose was the attitude of Dr. Samuel Johnson towards ladies preaching?

  A) He believed that ladies were born worse preachers than men.

  B) He was pleased that ladies could preach, though not as well as men.

  C) He disapproved of ladies preaching.

  D) He encouraged ladies to preach.

  32. Today, computers are still inferior to man in terms of _______.

  A) decision making

  B) drives and feelings

  C) growth of reasoning power

  D) information absorption

  33.In terms of making quick decisions, the human brain cannot be compared with the computer because______.

  A) in the long process of evolution the slow pace of life didn`t require such ability of the human brain

  B) the human brain is influenced by other factors such ass motivation and emotion

  C) the human brain may sometimes freeze up in a dangerous situation

  D) computers imitate life while the human brain does not imitate computers

  34. Though he thinks highly of the development of computer science, the author doesn`t mean that______.

  A) computes are likely to become a new form of intelligent life

  B) human beings have lost control of computers

  C) the intelligence of computers will eventually surpass that of human beings

  D) the evolution of intelligence will probably depend on that of electronic brains

  35. According to the passage, which of the following statements is TRUE?

  A) Future man will be made of silicon instead of flesh and blood.

  B) Some day it will be difficult to tell a computer from a man.

  C) The reasoning power of computers has already surpassed that of man.

  D) Future intelligent life may not necessarily be made of organic matter.

  Passage 3

  More and more, the operations of our businesses, governments, and financial institutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purposes can reap substantial rewards. Even worse, a number of people who have done this and been caught at it have managed to get away without punishment.

  It s easy for computer crimes to go undetected if no one checks up on what the computer is doing .But even if the crime is detected ,the criminal may walk away not only unpunished but with a glowing recommendation from his former employers.

  Of course, we have no statistics on crimes that go undetected. But it s disturbing to note how many of the crimes we do know about were detected by accident ,not by systematic inspections or other security procedures. The computer criminals who have been caught may been the victims of uncommonly bad luck.

  For example, a certain keypunch(鍵盤打孔)operator complained of having to Stay overtime to punch extra cards. Investigation revealed that the extra cards she was being asked to punch were for dishonest transactions. In another case, dissatisfied employees of the thief tipped off (向透露)the company that was being robbed.

  Unlike other lawbreakers, who must leave the country, commit suicide, or go to jail, computer criminals sometimes escape punishment, demanding not only that they not be charged but that they be given good recommendations and perhaps other benefits. All too often, their demands have been met.

  Why? Because company executives are afraid of the bad publicity that would result if the public found out that their computer had been misused. They hesitate at the thought of a criminal boasting in open court of how he juggled(耍弄)the most confidential records right under the noses of the company`s executives, accountants, and security staff. And so another computer criminal departs with just the recommendations he needs to continue his crimes elsewhere.

  1. It can be concluded from the passage that

  A)it is still impossible to detect computer crimes today

  B)computer crimes are the most serious problem in the operation of financial institutions

  C)computer criminals can escape punishment because they can`t be detected

  D)people commit computer crimes at the request of their company

  2. It is implied in the third paragraph that

  A)many more computer crimes go undetected than are discovered

  B)the rapid increase of computer crimes is a troublesome problem

  C)most computer criminals are smart enough to cover up their crimes

  D)most computer criminals who are caught blame their bad Melt

  3. Which of the following is mentioned in the passage?

  A)A strict law against computer crimes must be enforced

  B)Companies need to impose restrictions on confidential information.

  C)Companies will guard against computer crimes to protect their reputation.

  D)Companies usually hesitate to uncover computer crimes.

  4. What may happen to computer criminals once they are caught?

  A)With a bad reputation they can hardly find another job.

  B)They will be denied access to confidential records.

  C)They may walk away and easily find another job.

  D)They must leave the country or go to jail.

  5. The passage is mainly about

  A)why computer crimes are difficult to detect by systematic inspections

  B)why computer criminals are often able to escape punishment

  C)how computer criminals manage to get good recommendation from their former employers

  D)why computer crimes can`t be eliminated

  答案: Passage 1: CDBDA

  Passage 2: CBABD

  Passage 3: BADCB

  

 The question of whether war is inevitable is one which has concerned many of the world`s great writers. Before considering this question, it will be useful to introduce some related concepts. Conflict, defined as opposition among social entities directed against one another, is distinguished from competition, defined as opposition among social entities independently striving for something which is in inadequate supply. Competitors may not be aware of one another, while the parties to a conflict are. Conflict and competition are both categories of opposition, which has been defined as a process by which social entities function in the disservice of one another. Opposition is thus contrasted with cooperation, the process by which social entities function in the service of one another. These definitions are necessary because it is important to emphasize that competition between individuals or groups is inevitable in a world of limited resources, but conflict is not. Conflict, nevertheless, is very likely to occur, and is probably an essential and desirable element of human societies.

  Many authors have argued for the inevitability of war from the premise that in the struggle for existence among animal species, only the fittest survive. In general, however, this struggle in nature is competition, not conflict. Social animals, such as monkeys and cattle, fight to win or maintain leadership of the group. The struggle for existence occurs not in such fights, but in the competition for limited feeding areas and for the occupancy(占有)of areas free from meat-eating animals. Those who fail in this competition starve to death or become victims to other species. This struggle for existence does not resemble human war, but rather the competition for the necessities of life that are insufficient to satisfy all.

  Among nations there is competition in developing resources, trades, skills, and a satisfactory way of life. The successful nations grow and prosper(繁榮); the unsuccessful decline. While it is true that this competition may induce efforts to expand territory at the expense of others, and thus lead to conflict, it cannot be said that war-like conflict among nations is inevitable, although competition is.

  26. In the first paragraph, the author gives the definitions of some terms in order to ______.

  A) argue for the similarities between animal societies and human societies

  B) smooth out the conflicts in human societies

  C) distinguish between two kinds of opposition

  D) summarize the characteristic features of opposition and cooperation

  27. According to the author, competition differs from conflict in that_______.

  A) it results in war in most cases

  B) it induces efforts to expand territory

  C) it is a kind of opposition among social entities

  D) it is essentially a struggle for existence

  28. The phrase function in the disservice of one another(Para 7, Line.1) most probably means_______。

  A) betray each other

  B) harm one another

  C) help to collaborate with each other

  D) benefit one another

  29. The author indicates in the passage that conflict_______.

  A) is an inevitable struggle resulting from competition

  B) reflects the struggle among social animals

  C) is an opposition among individual social entities

  D) can be avoided

  30. The passage is probably intended to answer the question_______。

  A) Is war inevitable?

  B) Why is there conflict and competition?

  C) Is conflict desirable?

  D) Can competition lead to conflict?

  Passage 2

  As Dr. Samuel Johnson said in a different era about ladies preaching, the surprising thing about computers is not that they think less well than a man, but that they think at all. The early electronic computer did not have much going for it except a marvelous memory and some good math skills. But today the best models can be wired up to learn by experience, follow an argument, ask proper questions and write poetry and music. They can also carry on somewhat puzzling conversations.

  Computers imitate life. As computers get more complex, the imitation gets better. Finally, the line between the original and the copy becomes unclear. In another 15 years or so, we will see the computer as a new form of life.

  The opinion seems ridiculous because, for one thing, computers lack the drives and emotions of living creatures. But drives can be programmed into the computer`s brain just as nature programmed them into our human brains as a part of the equipment for survival.

  Computers match people in some roles, and when fast decisions are needed in a crisis, they often surpass them. Having evolved when the pace of life was slower, the human brain has an inherent defect that prevents it from absorbing several streams of information simultaneously and inherent defect that prevents it from absorbing several streams of information simultaneously and acting on them quickly. Throw too many things at the brain at one time and it freezes up.

  We are still in control, but the capabilities are increasing at a fantastic rate, while raw human intelligence is changing slowly, if at all. Computer power has increased ten times every eight years since 1946. In the 1990s, when the sixth generation appears, the reasoning power of an intelligence built out of silicon will begin to match that of the human brain.

  That does not mean the evolution of intelligence has ended on the earth. Judging by the past, we can expect that a new species out of man, surpassing his achievements as he has surpassed those of his predecessor. Only a carbon chemistry would assume that the new species must be man`s flesh-and-blood descendants. The new kind of intelligent life is more likely to be made of silicon.

  31. What do you suppose was the attitude of Dr. Samuel Johnson towards ladies preaching?

  A) He believed that ladies were born worse preachers than men.

  B) He was pleased that ladies could preach, though not as well as men.

  C) He disapproved of ladies preaching.

  D) He encouraged ladies to preach.

  32. Today, computers are still inferior to man in terms of _______.

  A) decision making

  B) drives and feelings

  C) growth of reasoning power

  D) information absorption

  33.In terms of making quick decisions, the human brain cannot be compared with the computer because______.

  A) in the long process of evolution the slow pace of life didn`t require such ability of the human brain

  B) the human brain is influenced by other factors such ass motivation and emotion

  C) the human brain may sometimes freeze up in a dangerous situation

  D) computers imitate life while the human brain does not imitate computers

  34. Though he thinks highly of the development of computer science, the author doesn`t mean that______.

  A) computes are likely to become a new form of intelligent life

  B) human beings have lost control of computers

  C) the intelligence of computers will eventually surpass that of human beings

  D) the evolution of intelligence will probably depend on that of electronic brains

  35. According to the passage, which of the following statements is TRUE?

  A) Future man will be made of silicon instead of flesh and blood.

  B) Some day it will be difficult to tell a computer from a man.

  C) The reasoning power of computers has already surpassed that of man.

  D) Future intelligent life may not necessarily be made of organic matter.

  Passage 3

  More and more, the operations of our businesses, governments, and financial institutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purposes can reap substantial rewards. Even worse, a number of people who have done this and been caught at it have managed to get away without punishment.

  It s easy for computer crimes to go undetected if no one checks up on what the computer is doing .But even if the crime is detected ,the criminal may walk away not only unpunished but with a glowing recommendation from his former employers.

  Of course, we have no statistics on crimes that go undetected. But it s disturbing to note how many of the crimes we do know about were detected by accident ,not by systematic inspections or other security procedures. The computer criminals who have been caught may been the victims of uncommonly bad luck.

  For example, a certain keypunch(鍵盤打孔)operator complained of having to Stay overtime to punch extra cards. Investigation revealed that the extra cards she was being asked to punch were for dishonest transactions. In another case, dissatisfied employees of the thief tipped off (向透露)the company that was being robbed.

  Unlike other lawbreakers, who must leave the country, commit suicide, or go to jail, computer criminals sometimes escape punishment, demanding not only that they not be charged but that they be given good recommendations and perhaps other benefits. All too often, their demands have been met.

  Why? Because company executives are afraid of the bad publicity that would result if the public found out that their computer had been misused. They hesitate at the thought of a criminal boasting in open court of how he juggled(耍弄)the most confidential records right under the noses of the company`s executives, accountants, and security staff. And so another computer criminal departs with just the recommendations he needs to continue his crimes elsewhere.

  1. It can be concluded from the passage that

  A)it is still impossible to detect computer crimes today

  B)computer crimes are the most serious problem in the operation of financial institutions

  C)computer criminals can escape punishment because they can`t be detected

  D)people commit computer crimes at the request of their company

  2. It is implied in the third paragraph that

  A)many more computer crimes go undetected than are discovered

  B)the rapid increase of computer crimes is a troublesome problem

  C)most computer criminals are smart enough to cover up their crimes

  D)most computer criminals who are caught blame their bad Melt

  3. Which of the following is mentioned in the passage?

  A)A strict law against computer crimes must be enforced

  B)Companies need to impose restrictions on confidential information.

  C)Companies will guard against computer crimes to protect their reputation.

  D)Companies usually hesitate to uncover computer crimes.

  4. What may happen to computer criminals once they are caught?

  A)With a bad reputation they can hardly find another job.

  B)They will be denied access to confidential records.

  C)They may walk away and easily find another job.

  D)They must leave the country or go to jail.

  5. The passage is mainly about

  A)why computer crimes are difficult to detect by systematic inspections

  B)why computer criminals are often able to escape punishment

  C)how computer criminals manage to get good recommendation from their former employers

  D)why computer crimes can`t be eliminated

  答案: Passage 1: CDBDA

  Passage 2: CBABD

  Passage 3: BADCB

  

信息流廣告 競價托管 招生通 周易 易經(jīng) 代理招生 二手車 網(wǎng)絡(luò)推廣 自學(xué)教程 招生代理 旅游攻略 非物質(zhì)文化遺產(chǎn) 河北信息網(wǎng) 石家莊人才網(wǎng) 買車咨詢 河北人才網(wǎng) 精雕圖 戲曲下載 河北生活網(wǎng) 好書推薦 工作計(jì)劃 游戲攻略 心理測試 石家莊網(wǎng)絡(luò)推廣 石家莊招聘 石家莊網(wǎng)絡(luò)營銷 培訓(xùn)網(wǎng) 好做題 游戲攻略 考研真題 代理招生 心理咨詢 游戲攻略 興趣愛好 網(wǎng)絡(luò)知識 品牌營銷 商標(biāo)交易 游戲攻略 短視頻代運(yùn)營 秦皇島人才網(wǎng) PS修圖 寶寶起名 零基礎(chǔ)學(xué)習(xí)電腦 電商設(shè)計(jì) 職業(yè)培訓(xùn) 免費(fèi)發(fā)布信息 服裝服飾 律師咨詢 搜救犬 Chat GPT中文版 語料庫 范文網(wǎng) 工作總結(jié) 二手車估價 情侶網(wǎng)名 愛采購代運(yùn)營 情感文案 古詩詞 邯鄲人才網(wǎng) 鐵皮房 衡水人才網(wǎng) 石家莊點(diǎn)痣 微信運(yùn)營 養(yǎng)花 名酒回收 石家莊代理記賬 女士發(fā)型 搜搜作文 石家莊人才網(wǎng) 銅雕 關(guān)鍵詞優(yōu)化 圍棋 chatGPT 讀后感 玄機(jī)派 企業(yè)服務(wù) 法律咨詢 chatGPT國內(nèi)版 chatGPT官網(wǎng) 勵志名言 兒童文學(xué) 河北代理記賬公司 教育培訓(xùn) 游戲推薦 抖音代運(yùn)營 朋友圈文案 男士發(fā)型 培訓(xùn)招生 文玩 大可如意 保定人才網(wǎng) 黃金回收 承德人才網(wǎng) 石家莊人才網(wǎng) 模型機(jī) 高度酒 沐盛有禮 公司注冊 造紙術(shù) 唐山人才網(wǎng) 沐盛傳媒
国产福利福利视频_91麻豆精品国产自产在线_中文字幕观看_欧美毛片aaa激情

            9000px;">

                      777a∨成人精品桃花网| 国产精品久久久爽爽爽麻豆色哟哟| 久久美女高清视频| 欧美日韩国产另类一区| 天堂蜜桃91精品| 精品一区二区三区的国产在线播放| 欧美成人女星排行榜| 舔着乳尖日韩一区| 中文字幕五月欧美| 欧美少妇bbb| 欧美视频你懂的| 欧美一区二区在线免费播放| 欧洲亚洲精品在线| 色成年激情久久综合| 91福利在线免费观看| 在线观看国产91| 国产高清精品久久久久| 经典三级一区二区| 不卡在线视频中文字幕| 成人永久免费视频| 在线视频综合导航| 日韩久久久精品| 一区二区三区视频在线看| 亚洲美女免费在线| 久久精品国产77777蜜臀| 国产一区二区看久久| 91亚洲国产成人精品一区二三 | 欧美专区亚洲专区| 91精品国产91久久综合桃花 | 日韩一区欧美小说| 日本成人在线一区| caoporn国产精品| 欧美一区二区三区日韩视频| 国产精品不卡视频| 国产suv一区二区三区88区| 91美女视频网站| 日韩色在线观看| 婷婷中文字幕一区三区| av中文字幕不卡| 欧美精品一区二区三区很污很色的 | av中文字幕亚洲| 日韩午夜精品电影| 亚洲一区二区在线播放相泽| 免费在线看成人av| av在线不卡观看免费观看| 日韩欧美国产午夜精品| 美女高潮久久久| 欧美三级电影网站| 中文字幕一区二区视频| 粉嫩在线一区二区三区视频| 91精品国产综合久久蜜臀| 亚洲综合色噜噜狠狠| 一本久久综合亚洲鲁鲁五月天 | 亚洲成av人片一区二区三区 | 中文字幕一区二区三区不卡| 亚洲成人av在线电影| 欧美酷刑日本凌虐凌虐| 亚洲人成影院在线观看| 狠狠色丁香婷婷综合| 国产欧美日韩亚州综合 | 亚洲综合小说图片| 欧美人与z0zoxxxx视频| 亚洲精品视频免费看| www.激情成人| 亚洲天堂av一区| 欧美日韩免费视频| 国产一区二区精品久久| 亚洲高清在线精品| 欧美国产一区二区在线观看| 欧美午夜免费电影| 国产米奇在线777精品观看| 亚洲最新在线观看| 国产丝袜欧美中文另类| 在线播放日韩导航| 色域天天综合网| 国产成人一级电影| 免费成人美女在线观看| 夜夜爽夜夜爽精品视频| 91精品在线麻豆| 不卡av电影在线播放| 激情综合网激情| 日日夜夜一区二区| 亚洲线精品一区二区三区| 国产精品色婷婷| 国产欧美日韩中文久久| 中文字幕不卡在线观看| 国产无一区二区| 国产精品热久久久久夜色精品三区| 日韩精品一区二区三区中文不卡| 欧美四级电影网| 在线视频你懂得一区| av电影在线观看一区| 日本久久电影网| 欧美日韩综合在线免费观看| 欧美日韩成人综合天天影院| 欧美日韩一级黄| 久久品道一品道久久精品| 日韩国产一二三区| 国产风韵犹存在线视精品| 制服丝袜亚洲网站| 在线播放中文字幕一区| 91精品福利在线一区二区三区| 欧美一级xxx| 中文字幕av资源一区| 一区二区高清免费观看影视大全| 五月激情综合婷婷| 成人一道本在线| 欧美性大战xxxxx久久久| 精品粉嫩超白一线天av| 亚洲欧美一区二区三区国产精品| 日韩国产欧美视频| 99r精品视频| 精品国产一区二区三区忘忧草| 中文字幕五月欧美| 成人免费高清在线观看| 日韩欧美的一区| 日韩va亚洲va欧美va久久| 99国产精品国产精品久久| 国产欧美一区二区三区在线看蜜臀| 亚洲国产一区视频| 91成人在线观看喷潮| 一区二区三区在线观看视频| 黑人巨大精品欧美黑白配亚洲| 欧美色综合影院| 亚洲国产中文字幕| 在线观看一区二区视频| 国产精品对白交换视频| 国产精品99久久久久久有的能看| 在线综合视频播放| 美女视频黄久久| 精品国产乱码久久久久久影片| 视频在线观看国产精品| 欧美一级艳片视频免费观看| 久久国产精品免费| 欧美激情一二三区| 色菇凉天天综合网| 麻豆成人久久精品二区三区红| 欧美www视频| 日本伦理一区二区| 天堂蜜桃91精品| 精品久久久三级丝袜| av在线这里只有精品| 日韩不卡在线观看日韩不卡视频| 91精品国产综合久久香蕉的特点| 国产综合久久久久久鬼色| 夜夜操天天操亚洲| 久久综合久久综合亚洲| 日本韩国精品在线| 国产呦精品一区二区三区网站| 日本一区二区三区四区| 91成人在线精品| 国产另类ts人妖一区二区| 亚洲成人免费看| 亚洲同性同志一二三专区| 日韩精品一区国产麻豆| 欧美色手机在线观看| 成人av免费网站| 国产精品一品二品| 国产尤物一区二区在线| 蜜臀av一区二区在线观看| 亚洲狠狠丁香婷婷综合久久久| 国产夜色精品一区二区av| 欧美人牲a欧美精品| 欧美制服丝袜第一页| 99久久99精品久久久久久| 国产99久久久久| 波多野结衣在线aⅴ中文字幕不卡| 国内精品国产三级国产a久久| 美女一区二区三区| 久久er精品视频| 国产一区欧美一区| 国产高清不卡一区| 成人蜜臀av电影| 在线一区二区三区做爰视频网站| 91视频在线观看| 欧美在线制服丝袜| 精品捆绑美女sm三区| 亚洲国产精品99久久久久久久久| 国产精品久久毛片a| 天堂va蜜桃一区二区三区 | 色噜噜狠狠色综合中国| 91色婷婷久久久久合中文| 99国产精品国产精品毛片| 色综合久久88色综合天天| 欧美午夜一区二区| 欧美丰满高潮xxxx喷水动漫| 欧美女孩性生活视频| 精品国产免费一区二区三区四区| 日韩精品专区在线| 中文字幕亚洲在| 亚洲国产精品影院| 国产91清纯白嫩初高中在线观看 | 色94色欧美sute亚洲线路一ni| 日韩午夜激情免费电影| 亚洲天堂中文字幕| 国产揄拍国内精品对白| 欧美喷潮久久久xxxxx| 一区二区三区成人| 91视频观看免费| 中文字幕精品一区二区三区精品|