日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been shown that rats will, when given a choice over a period of time, prefer water with vitamins(維生素) to water without vitamins, even though there is no difference in taste or smell between the two water bottles. When a sweet smell was added to the vitamins-enriched water, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were changed to the clear water. In time(最后), however, they broke the habit and went back to where the necessary vitamins were.
In experiments, babies of 6 to 12 months old were placed in a room with many choices of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating habits, but over a period of time they managed to choose a well-balanced diet.
So in choosing food, rats and babies do seem to know what's best for them. Clearly, there is a kind of “body wisdom”, which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced by old habits. Some people eat foxes, dogs and blackbirds, while we eat cows and pigs. So what people eat and how much they eat seem to be greatly influenced by what is going around them.
小題1: In the experiment on rats, a sweet smell was added to the rats’ drinking water to ________ .   
A.encourage rats to drink vitamins-enriched water
B.test whether rats know which drink is good for them
C.find out rats’ preference in flavor(口味)
D.show the vitamins are tasteless
小題2:Talking about eating habits, babies and rats are just like each other because ________ .
A.both have the wisdom to choose a balanced diet
B.both prefer flavored food and drink
C.both have the same eating habits
D.both develop a taste for the same kinds of food
小題3:In the experiment mentioned in the second paragraph, babies were ________ .
A.given many choices of drinks
B.placed and fed in a hospital
C.given all kinds of baby food
D.trained to select a balanced diet
小題4:Grown-up people’s eating habits differ from those of babies because ________ .
A.they know better than babies what kinds of food are good for their health
B.they usually cannot say no to all kinds of delicious foods
C.their eating habits have much to do with the social and cultural customs
D.they have more choices of food than babies in eating patterns

小題1:B
小題2:A
小題3:C
小題4:C

試題分析:文章介紹孩子和老鼠在挑選食物方面是相似的,因?yàn)樗鼈兌加羞x擇均衡飲食的智慧,但是成年人的飲食習(xí)慣是受社會(huì)文化風(fēng)俗的影響。
小題1:推理題:從第一段的句子:when given a choice over a period of time, prefer water with vitamins(維生素) to water without vitamins, even though there is no difference in taste or smell between the two water bottles 可知這個(gè)實(shí)驗(yàn)是研究老鼠是否能夠選擇對它們有好處的飲料,選B
小題2:細(xì)節(jié)題:從第三段的句子:So in choosing food, rats and babies do seem to know what's best for them. Clearly, there is a kind of “body wisdom”, 可知孩子和老鼠在挑選食物方面是相似的,因?yàn)樗鼈兌加羞x擇均衡飲食的智慧,選A
小題3:細(xì)節(jié)題:從第二段的句子:In experiments, babies of 6 to 12 months old were placed in a room with many choices of baby food before them. They were given whatever food they pointed to or appeared interested in. 可知在實(shí)驗(yàn)中,嬰兒被給與了各種各樣的嬰兒食物,選C
小題4:推理題:從最后一段的句子:Clearly, there is a kind of “body wisdom”, which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced by old habits. 可知成年人的飲食習(xí)慣是受社會(huì)文化風(fēng)俗的影響。選C
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源:不詳 題型:完形填空

Did you know that the position you choose to sleep in says something about what kind of person you are?
A study of 1,000British people has been done by Chris,a British professor and director of the Sleep Assessment and Advisory Service in the UK.It looked at the six most common sleeping positions and which personalities tend to match them.Have a look.
1. Fetus (胎兒) position – This is the most common sleeping position. About 41 percent of the participants said they sleep in this position. These sleepers may appear to be strong but they are usually sensitive (敏感的) and shy. The more they curl (蜷縮) up, the more worried they are.
2. Log position (樹干睡姿) – This is the second most common position. People who sleep like a log are usually stubborn.
3. Yearner position (向往型睡姿) – This position says that you are open-minded and eager (急切的) to face challenges.
4. Soldier position – These sleepers lie on their backs with their arms down and close to the body. They are usually reserved and quiet.
5. Freefall position – People who sleep in this position are outgoing (外向的) but feel a lack of control in their lives. This is the least comfortable position.
6. Starfish position – People who sleep like this are good listeners, helpful, and uncomfortable being the center of attention.
小題1:What is the main idea of this passage?
A.Sleeping position decides personality.
B.Sleeping position reflects personality.
C.What the six different sleeping positions are like.
D.Different people have different sleeping positions.
小題2:Which of the following pictures shows “soldier position”?
A.B.C.D.
小題3:According to the passage, which of the following statements is correct?
A.Those sleeping in fetus position are always strong.
B.Those sleeping in log position changes their ideas easily.
C.Those sleeping in freefall position usually feel uncomfortable in their lives.
D.Those sleeping in starfish position may feel uneasy when focused on.
小題4:What does the underlined word “participants” in paragraph 3 most probably mean?
A.FetusB.British peopleC.People surveyedD.Sleepers

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

One of my China Dialogue colleagues in Beijing recently bought a Philips energy-saving light bulb to replace a standard one.He was happy with his choice.It may have cost 30 yuan (just under US$4.50) - ten times the price of a filament (燈絲) bulb - but he wanted to save energy as part of his low-carbon lifestyle.And according to the shopkeeper, he would save, in the long run, much more than the 30 yuan he was spending.
Yet only one month later, his expensive light bulb blew up, before he had saved even a small part of the purchase price.Will he stick to his high-cost, low-carbon lifestyle?
China's environmental organizations have started to advocate low-carbon lifestyles and the decrease of carbon footprints to help fight against climate change.But they have overlooked one fact: in China, low-carbon living comes at a high cost.It means buying energy-saving bulbs and appliances, and environmentally friendly building materials and daily goods.Cost can no longer be the only standard for purchases.An energy-saving and environmentally friendly product is more expensive than a standard alternative - whether it's a simple light bulb or the house it shines.For average consumers, even buying an ordinary bulb is a huge burden.How can we persuade ordinary people to choose an energy-saving residence? This is not a trend they can afford to follow; perhaps this fashion is only for the rich.
Most consumers today do not cause huge carbon dioxide (CO2) emissions.Their responsibility lies not in choosing a low-carbon lifestyle today, but in avoiding a high-carbon life in the future.The principle of "common but differentiated responsibility" - a basis of sustainable development - can be applied here as well.
In China, low-carbon living still is resisted by a lack of social infrastructure(基礎(chǔ)設(shè)施). Even if your salary allows you to make that choice, nobody is there to help you accomplish it.
Consider energy-saving homes. You need to find out whether or not the developer has used natural materials wherever possible; how effective the insulation(絕緣物、隔熱物) is; and what the green credentials of installed equipment are.You can read up a little, but you'll still be lucky to avoid being puzzled by the developers' marketing.Many so-called energy-saving buildings are nothing of the sort, and some are even more energy-hungry than the average home - as Li Taige warned in his article "Energy-efficient buildings? Not always", on China Dialogue last August.
小題1: What may probably be the best title of this passage?
A.To purchase a cheap bulb - your wise alternative.
B.To choose an energy-saving residence - a must of your life
C.To learn a low-carbon lifestyle - each citizen's responsibility
D.To learn a low-carbon lifestyle - a promising but difficult purpose
小題2:Why does the writer say this fashion is only for the rich in the fourth paragraph?
A.Because the cost is a very important standard for purchases.
B.Because buying an ordinary bulb is very expensive.
C.Because energy-saving products are more expensive than the common alternatives.
D.Because rich people like to follow this trend.
小題3: What does the writer think of energy-saving homes?
A.Most of them are environmentally friendly.
B.They are musts of low-carbon lifestyle of Chinese.
C.They are huge burdens for Chinese people.
D.Many of them are more in name than in reality.
小題4:We can infer from the passage that ____.
A.Using energy-saving bulbs and appliances is a fashion.
B.It's easy for most Chinese to try to learn a low-carbon lifestyle.
C.All citizens in China don’t have the same responsibility in living a low-carbon lifestyle.
D.Most Chinese families cannot afford to purchase an energy-saving residence.
小題5:What is the writer's attitude towards the low-carbon lifestyle?
A.informative and entertainingB.supportive but cautious
C.negative but wiseD.positive and active

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Downing the last drop of an expensive famous brand H2O as well as remembering to throw the empty bottle in the recycling bin, makes you feel pretty good about yourself, right? It shouldn’t. Even when the bottles are recycled, there are all kinds of other consequences of swallowing bottled water, says Melissa Peffers, the air-quality program manager for Environmental Defense.
The containers are often filled in faraway lands, then shipped from abroad, and stored in refrigerators at your local store. Compare that with the influence on environment of turning on your tap, filling a glass, and drinking up!
Anyone who is choosing bottled water for health reasons is misguided, says Peffers, “Most bottled water is just tap water.” And what comes out of your tap is carefully monitored to follow the strict rules. Consider another fact that bottled water is surprisingly expensive, especially when compared with the alternative, which is almost free, and it is astonishing that America’s desire for bottled water seems impossible to satisfy, reaching nearly 30 billion bottles a year.
“My parents’ generation never had bottled water,” says Isabelle Silverman, an Environmental Defense legal adviser. She has made a commitment to going bottle free. “You don’t need to fetch it home from the store, and it’s cheaper,” she adds.
Bottled water’s role as a status symbol needs to change, Peffers points out. So when a waiter at an expensive restaurant offers  “And what’s your drink?” that’s no reason to forget your conviction(信念). “Don’t be afraid to say, ‘I’ll have tap.’ Say it loud enough that the other tables nearby can hear you,” Peffers says. “And then spend that money on a dessert.”
小題1:In the first paragraph, the underlined sentence “It shouldn’t.” suggest that people _______.
A.shouldn’t feel pleased with finishing the water in the bottle.
B.shouldn’t feel good about drinking an expensive brand H2O.
C.shouldn’t be pleased with just recycling empty bottles.
D.shouldn’t be satisfied with drinking only bottled water.
小題2:According to the author, tap water is _______.
A.a(chǎn)s safe as bottled waterB.morel likely to be polluted
C.healthier than bottle waterD.less convenient than bottled water
小題3:The underlined part “going bottle free” (in Para. 4) means “_______”.
A.making bottled water freeB.giving up bottled water
C.recycling use water bottlesD.providing free water containers
小題4:Why does Peffers ask people to say “I’ll have tap.” Loudly?
A.To encourage them to set an example for others to follow.
B.To advise them to save the money for one more dessert.
C.To remind them to be aware of their social status.
D.To persuade them to speak confidently in public.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:單選題

Thousands of teenagers will be able to transfer to a new wave of “studio schools” at the age of 14 to improve their chances of finding a job in UK. A dozen new-style schools are designed to act as a bridge to the workplace and cut the number of NEETs--young people not in education, employment or training.
Under plans, schools will operate longer days and work outside standard academic terms.
Each pupil will be expected to spend between four hours and two days a week on work placements with businesses linked to the school and teenagers will be assigned a personal coach to act as an academic “l(fā)ine manager”.
The reforms are put forward due to the fears that too many teenagers are now finishing full-time education lacking the skills needed to succeed in the workplace. According to a recent report, more than two-thirds of employers believe school and college leavers lack important “employability skills” such as customer awareness, while 55 per cent say they are unable to manage their time or daily tasks. And the number of NEETs has hit a record high, with almost one-in-five young people being left without a job or training place.
The Department for Education will announce the establishment of 12 studio schools -- meeting the need of around 3,600 teenagers -- in areas such as Liverpool, Stevenage, Stoke-on-Trent and Fulham, west London. Each one, opening in 2012, will be linked to a series of local employers. Under plans, pupils will be able to transfer out of ordinary schools to attend them between the age of 14 and 19.
The Government said all subjects would be taught “through projects, often designed with employers” -- with disciplines such as science being linked directly to local engineering firms or hospitals. Schools will operate a longer day to give pupils a better understanding of the demands of the workplace. Along with their studies, pupils will carry out work placements for four hours a week, rising to two days a week of paid work for those aged 16 to 19. They will also get the chance to take professional qualifications linked directly to the needs of local employers.
小題1:According to the passage, the NEETs are referred to those who ________.
A.often miss classes from school
B.refuse to take any kind of part-time jobs after school
C.depend on their parents to find jobs after they graduate
D.have no jobs without accepting education and work training
小題2: Compared to ordinary schools, studio schools will offer the young more ________.
A.interesting and lovely cartoons to make study easier
B.chances to get future jobs with expert job training
C.possibilities to make friends without going outside
D.lessons helping them to be admitted to universities
小題3:What makes the government decide to found studio schools?
A.The determination to solve the problem of lacking workers.
B.The doubt about whether full-time education is perfect.
C.The worry about educated people lacking working skills.
D.The increasing number of teens who drop out early.
小題4: What may most probably attract senior high school students at studio school?
A.They can find suitable jobs earlier with good qualification.
B.They will be admitted to top companies with received training.
C.They needn’t go to university thanks to received training here.
D.They may have more free time to find part-time jobs after school.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Instead of hitting the beach, fourteen high school students traded swimming suits for lab coats last summer and turned their attention to scientific experiments.
The High School Research Program offers high school students guidance with researchers in Texas A&M’s College of Agriculture and Life Sciences. Jennifer Funkhouser, academic adviser for the Department of Rangeland Ecology and Management, directs this four-week summer program designed to increase understanding of research and its career potential.
Several considerations go into selecting students, including grades, school involvement and interest in science and agriculture. And many students come from poorer school districts, Funkhouser says, “This is their chance to learn techniques and do experiments they never would have a chance to do in high school.”
Warner Ervin of Houston is interested in animal science and learned how to tell male from female mosquitoes(蚊子).His adviser, Craig Coates, studies the genes of mosquitoes that allow them to fight against malaria and yellow fever. Coates thought this experience would be fun and helpful to the high school students.
The agricultural research at A&M differs from stereotypes. It’s “molecular(分子)science on the cutting edge,” Funkhouser says. The program broadened students’ knowledge. Victor Garcia of Rio Grande City hopes to become a biology teacher and says he learned a lot about chemistry from the program.
At the end of the program, the students presented papers on their research. They’re also paid $600 for their work-another way this program differs from others, which often charge a fee.
Fourteen students got paid to learn that science is fun, that agriculture is a lot more than milking and plowing and that research can open many doors.
小題1:The research program is chiefly designed for  _______.
A.high school advisers from Houston
B.college students majoring in agriculture
C.high school students from different places
D.researchers at the College of Agriculture and Life Sciences
小題2:It can be inferred from the text that the students in poorer areas  ___________ .
A.had little chance to go to college
B.could often take part in the program
C.found the program useful to their future
D.showed much interest in their high school experiments
小題3:When the program was over, the students  ________.
A.entered that collegeB.wrote research reports
C.paid for their researchD.found way to make money
小題4:The underlined expression “on the cutting edge” in paragraph 5 means “on the most  ___ position”.
A.importantB.favorable
C.a(chǎn)stonishingD.a(chǎn)dvanced

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Full face transplants are no longer science fiction fantasy, a leading surgeon has said, adding that they are technically practical but ethically(道德地)complex.
Peter Butler from London’s Royal Free Hospital called for a debate on the ethics of such an operation made possible by new drugs which stop the body’s immune (免疫)system rejecting a transplanted face. “It is not ‘can you do it?’ but ‘should we do it?’” he told the BBC. “The technical part is not complex, but I don’t think that’s going to be the very great difficulty. The ethical and moral debate is obviously going to have to take place before the first facial transplantation.”
The British Association of Plastic Surgeons will discuss the microsurgical procedure (微型外科技術(shù)), which could give new skin, bone, nose, chin, lips and ears from deceased donors to patients disfigured(毀容的)by accidents, burns or cancer. But surgeons could have trouble finding enough willing donors. Butler said his survey of doctors, nurses and members of the public showed most would accept a face transplant but few were willing to donate their own after dying.
Despite a number of ethical concerns, Christine Piff, who founded the charity Let’s Face It after suffering a rare facial cancer 25 years ago, welcomed the possibility of face transplants. She rejected the idea that the procedure would mean people would end up living with a dead person’s face. “There are so many people without faces, I have half a face… but we are all so much more than just a face… you don’t take on their personality. You are still you,” she told reporters. “If we can donate other organs of the body then why not the face. I can’t see anything wrong with it.”
小題1:The underlined word “deceased” in the third paragraph probably means _________.
A.livingB.deadC.diseasedD.dying
小題2: When Christine Piff says “There are so many people without faces…”, she refers to the people _________.
A.who are dishonorable and shameless
B.who disagree with the full face transplant
C.who are seriously injured by an accident
D.who are disfigured by accidents, burns and cancer
小題3:According to the passage, what makes it likely to carry out a facial transplantation?
A.Drugs are available to stop the body’s immune system rejecting a transplanted face.
B.There are some people who are willing to donate their faces after dying.
C.Most people accept the idea of face transplants.
D.It’s morally practical, though technically complex.
小題4:What is implied but not stated in the passage?
A.Christine Piff has been the first lucky patient to receive a face transplant.
B.Surgeons have difficulty finding enough willing donors.
C.The main difficulty with the operation lies in the matter of ethics and morality.
D.Nobody other than Christine Piff is quite in favor of the donation of organs.
小題5:What would be the best title for the text?
A.First Facial Transplantation
B.Debate on the Ethics of Transplant
C.Face Transplant No Longer Science Fantasy
D.Let’s Face It

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

How many times do you have to fail at something in order to succeed? Did you know that Thomas Edison failed 10,000 times while trying to invent the light bulb? He certainly had a “l(fā)earn and do” attitude! He was able to turn each failed experiment into a successful way to invent the light bulb. So what can we learn from this? You can adopt the “fail forward” strategy too.
In reality, none of us are failures. It’s true that we will experience times of defeat, problems, and disasters, but remember, each one of us is meant to succeed in life. However, we must choose our fate. Henry David Thoreau said, “Men are born to succeed, not to fail.”
We can never be forced into having a happy and successful life. Whether or not you experience success or failure is completely controlled by what you think and do. You are the only one who can choose the thoughts that will keep you from achieving the abundant life and joy that you are meant to have. No matter how difficult things may seem, say to yourself, “I choose to be a happy and successful person.”
Why do some people get what they want and others fail? I believe that getting what you desire in life takes planning, and it doesn’t just happen by luck. So how do we plan for success?
It has been proven that successful people do things more differently than unsuccessful people. They recognize the patterns of success and follow them; one of those patterns is planning. They plan what they think and do, which sets them apart. They know exactly what they desire, have an intelligent plan for getting it, and then work their plan. They know what success will cost them in terms of time, energy, and results, and they devote the right resources toward making their plans happen.
小題1:The writer refers to Thomas Edison to ________.
A.introduce his invention
B.put forward the topic of the text
C.praise the inventor
D.show the way to success
小題2:What Henry David Thoreau said implies that ________.
A.everyone is able to be a success
B.most people lack the confidence to succeed
C.everyone can do nothing but succeed in his life
D.no one can succeed without difficulty and suffering
小題3:The main idea of the last two paragraphs is that ________.
A.planning plays an important role in success
B.successful people differ from unsuccessful ones
C.successful people have many patterns of success
D.devoting the right resources can help reach one’s goal
小題4:Which of the following would match the text?
A.All roads lead to Rome.B.Think twice before you act.
C.No pains, no gains.D.Failure is the mother of success.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

To get a chocolate out of a box requires a lot of unpacking: the box has to be taken out of the paper bag in which it arrived, the cellophane (玻璃紙) wrapper has to be torn off, the lid opened and the paper removed, the chocolate itself then has to be unwrapped from its own piece of paper. But this overuse of wrapping is not limited to luxuries. It is now becoming increasingly difficult to buy anything that is not done up in beautiful wrapping.
The package itself is of no interest to the shopper, who usually throws it away immediately. Useless wrapping accounts for much of the refuse put out by the average London house-hold each week. So why is it done? Some of it, like the cellophane on meat, is necessary, but most of the rest is simply competitive selling. This is absurd. Packaging is using up valuable energy and resources and polluting the environment.
Recycling is already happening with milk bottles which are returned to the dairies (牛奶場), washed out, and refilled. But both glass and paper are being threatened by the growing use of plastic. More dairies are experimenting with plastic bottles.
The trouble with plastic is that it does not rot. Some environmentalists argue that the only solution to the problem of ever increasing plastic containers is to throw away plastic altogether in the shops, a suggestion unacceptable to many producers who say there is no alternative (替代品) to their handy plastic packs.
It is evident that more research is needed into the recovery and re-use of various materials and into the cost of collecting and recycling containers rather than producing new ones. Unnecessary packaging, intended to be used just once, and to make things look better so more people will buy them, is clearly becoming increasingly absurd. But it is not so much a question of throwing away packaging as using it wisely. What is needed now is a more advanced approach to using scarce resources for what is, after all, a relatively unimportant function.
小題1:The underlined part “this overuse of wrapping is not limited to luxuries” in Paragraph l means ______.
A.more wrapping is needed for ordinary products
B.the wrapping used for luxury products is unnecessary
C.more wrapping is used for luxuries than for ordinary products
D.too much wrapping is used for both luxury and ordinary products
小題2:Why is packaging important to producers?
A.It is easy to use it again.
B.Packaged things will not go rotten.
C.They want to attract more shoppers.
D.Shoppers are all interested in beautiful packaging.
小題3:According to the passage, dairies are ______.
A.reusing their paper containers
B.giving up the use of glass bottles
C.increasing the use of plastic bottles
D.experimenting with the use of paper bottles
小題4:Some environmentalists think that ______.
A.too much plastic is wasted
B.shops should stop using plastic containers
C.no alternative can be found to plastic packaging
D.plastic packaging should be made more convenient

查看答案和解析>>

同步練習(xí)冊答案
一色屋精品亚洲香蕉网站| 色偷偷男人天堂| 久久精品老司机| 人妻人人澡人人添人人爽| 亚洲一区欧美在线| www香蕉视频| 青青色在线视频| 神马午夜伦理不卡| 97精品资源在线观看| 国产在线日韩精品| 午夜影院日韩| 97久久超碰精品国产| 一区av在线播放| 日韩欧美一二三四区| 久久精品久久久久电影| 91九色综合久久| 在线观看视频黄色| 小泽玛利亚视频在线观看| 最近中文字幕免费| 国产99免费视频| 在线看中文字幕| 成av人片在线观看www| 91久久精品无嫩草影院| 欧美1级日本1级| 国产成人av一区二区三区在线| 最好看的中文字幕久久| 欧美三级电影在线观看| 一区二区三区 在线观看视| 国产成人jvid在线播放| 日本高清一区| 国产日产欧美视频| 88久久精品无码一区二区毛片| 久久久久99精品成人片我成大片 | 欧美12一14sex性hd| 精品精品导航| 最新国产精品视频| 日韩电影一区二区三区| 国产精品护士白丝一区av| 欧美日韩在线不卡| 欧美日本啪啪无遮挡网站| 97se在线视频| 人妻精品无码一区二区三区| 蜜桃久久精品成人无码av| 亚洲综合五月天婷婷丁香| 在线激情免费视频| 欧美影院在线| 久久久久久久波多野高潮日日| 日本一区二区视频在线| 日韩午夜av电影| 国产成人一区二区三区电影| 色乱码一区二区三区熟女| 美女露出粉嫩尿囗让男人桶| 久久久久久久久久成人| xxxxx日韩| 粉嫩的18在线观看极品精品| 日韩电影免费在线观看网站| 亚洲综合男人的天堂| 亚洲图片欧美午夜| 国产精品美女xx| 久久久精品高清| 精品人妻一区二区三区免费看 | 精品人妻互换一区二区三区| 国内老熟妇对白xxxxhd| 涩涩涩视频在线观看| 一区二区三区四区电影| 国产清纯在线一区二区www| 欧美成人精品福利| 国产日韩一区在线| 激情五月婷婷久久| 青青草免费观看视频| 久热国产在线| 97精品一区| 国产精品五月天| 亚洲视频在线看| 含羞草久久爱69一区| 国产ts在线观看| 国产乱子伦精品无码码专区| cao在线视频| 亚洲国产片色| 亚洲午夜在线观看视频在线| 久久久久北条麻妃免费看| 日韩精品资源| 神马久久久久久久久久久| 青娱在线视频| 欧洲亚洲一区二区三区| 成人黄色一级视频| 亚洲精品在线观看网站| 成人一区二区三区四区| 中国极品少妇xxxx| 农村少妇久久久久久久| 日韩高清一区| 懂色av中文字幕一区二区三区| 欧美情侣在线播放| 91精品在线一区| 中文字幕55页| 高潮一区二区三区乱码| 精品一区二区三区中文字幕在线 | 精品国产91乱高清在线观看 | 99国产成人精品| 色成人综合网| 国产九九视频一区二区三区| 日韩精品一区二区三区四区视频| 成人欧美一区二区三区视频 | 一区二区三区四区免费视频| 国内毛片毛片毛片毛片毛片| a√资源在线| 亚洲高清资源在线观看| 亚洲影视在线播放| 日本a级片电影一区二区| 91精品无人成人www| www.xxx国产| 另类在线视频| 国产精品久久久久一区二区三区| 欧美另类69精品久久久久9999| 人人干视频在线| 久久这里只有精品9| 成人亚洲免费| 成人高清av在线| www.日韩欧美| 波多野结衣50连登视频| 国产又大又黑又粗| 成人台湾亚洲精品一区二区| 国产视频不卡一区| 久久久久久国产免费| av免费中文字幕| 性欧美videos另类hd| 蜜桃一区av| 亚洲乱码国产乱码精品精可以看| 欧美与黑人午夜性猛交久久久| 国内av一区二区| 久草在线资源视频| 99久久这里只有精品| 日韩欧美亚洲国产一区| 99国内精品久久久久久久软件| 久久成人激情视频| 中文字幕有码在线视频| 秋霞电影网一区二区| 亚洲国产欧美一区二区丝袜黑人| 伊人久久大香线蕉成人综合网| 国产成人精品网| 国产精品亚洲综合在线观看 | 国产一区二区三区四区五区| 亚洲一区二区三区国产| 91九色视频在线| www.涩涩爱| 亚洲精品日产| 99久久精品99国产精品| 欧美国产视频一区二区| 久久精品亚洲天堂| 国产高清视频在线观看| 久久看片网站| 亚洲人a成www在线影院| www在线观看免费| 亚洲第一视频在线| 99久久.com| 91精品国产综合久久国产大片| 日韩av免费电影| 中文字幕亚洲乱码熟女1区2区| 国产亚洲精aa在线看| 亚洲人妖av一区二区| 成人激情视频在线观看| 99久久精品久久亚洲精品| 日本免费久久| 国产精品久久综合| 91老司机在线| 久久高清无码视频| 亚洲日本va午夜在线电影| 伊人婷婷欧美激情| 激情小说综合网| 男人午夜免费视频| 亚洲精品动态| 欧美图片一区二区三区| 手机看片日韩国产| 免费看国产片在线观看| 亚洲国产高清视频| 亚洲午夜国产成人av电影男同| 男操女免费网站| 四虎久久免费| 99热99精品| 国产精品综合网站| 欧美日韩国产精品一区二区三区| 日韩精品成人| 色哟哟欧美精品| 国产日韩欧美大片| 午夜视频在线播放| 日韩电影在线观看一区| 欧美日韩第一页| 国产精品密蕾丝袜| 日韩三区四区| 欧美日韩加勒比精品一区| 宅男av一区二区三区| 色网站免费观看| 三级在线观看一区二区| 欧美大学生性色视频| 欧美做受xxxxxⅹ性视频| 成人激情综合| 亚洲va韩国va欧美va| 一级一片免费播放| 一个人看的www一区| 蜜桃一区二区三区在线观看| 欧美成人h版在线观看| 三上悠亚影音先锋| 日本一区二区三区视频在线看| 欧美中文字幕一区二区三区| bt天堂新版中文在线地址| 国产人成在线观看| 97久久人人超碰| 国产chinese精品一区二区| 无码aⅴ精品一区二区三区| 国产精品99视频| 一区二区欧美久久| a级片在线观看| 福利在线一区| 欧美大片在线观看一区二区| 亚洲男人天堂av在线| 免费高潮视频95在线观看网站| 亚洲女同一区二区| 欧美aaa在线观看| 黄色网址在线播放| 久久亚区不卡日本| 精品在线观看一区二区| 女人18毛片水真多18精品| 黄色精品一二区| 成人在线激情视频| 一级黄色免费看| 久久综合九色综合欧美狠狠| 91精品国产99| 日韩不卡在线播放| 1000部精品久久久久久久久| 欧美极品少妇与黑人| 精品无码久久久久久久| 91久久久精品国产| 久久综合伊人77777蜜臀| 性欧美videos| 亚洲成av人片一区二区密柚| 久久九九国产精品怡红院 | 羞羞答答成人影院www| 日韩一区二区三区xxxx| 欧美黑人猛猛猛| 婷婷另类小说| 欧美高清在线观看| 国产成人在线免费观看视频| 国内精品久久久久久久97牛牛 | 欧美日韩亚洲自拍| av电影一区| 欧美日韩1234| 色婷婷狠狠18禁久久| 538任你躁精品视频网免费| 亚洲成人精品av| 男生草女生视频| av伊人久久| 欧美国产精品人人做人人爱| 亚洲一区欧美在线| 久久激情婷婷| 亚洲a在线播放| 动漫黄在线观看| 久久精品网站免费观看| 亚洲一区在线直播| 黄网站视频在线观看| 亚洲va天堂va国产va久| 亚洲高清在线免费观看| 国内欧美日韩| 日韩av在线最新| 东方av正在进入| 亚洲欧洲一区二区天堂久久| 国产免费一区视频观看免费| 色呦呦免费观看| 国产清纯美女被跳蛋高潮一区二区久久w| 在线视频一区观看| 第一福利在线视频| 91精品国产黑色紧身裤美女| 一区二区三区久久久久| 欧美在线影院| 国产日韩欧美在线看| 最后生还者第二季在线观看| 中文字幕亚洲精品在线观看| av黄色在线网站| 999精品视频在线观看| 亚洲视频第一页| 日韩欧美三级视频| 免费xxxx性欧美18vr| 鲁丝片一区二区三区| 黄网址在线观看| 欧美妇女性影城| 蜜桃av乱码一区二区三区| 国内精品美女在线观看| 亚洲一区二区三区sesese| 亚洲pron| 精品国产91久久久久久老师| www.555国产精品免费| 成人在线国产| 国产不卡av在线免费观看| 香蕉视频免费看| 日韩久久一区二区| 日本77777| 黑人操亚洲人| 国产精品对白刺激| 日本24小时在线高清视频| 亚洲制服丝袜av| 亚洲精品久久一区二区三区777| 日韩av大片| 成人h视频在线观看播放| 国产精品一二三区视频| 欧美系列亚洲系列| 亚洲精品视频网址| 日韩主播视频在线| 亚洲一区在线直播| 日本在线中文字幕一区二区三区| 国产一区二区三区毛片| 中文字幕乱码在线观看| 国产日产欧美一区二区三区| 国内自拍视频网| 精品国产精品久久一区免费式| 国产精品久久91| 成人av一区| 日韩免费一区二区| 欧美成人精品欧美一级乱黄| 99久免费精品视频在线观看 | 久久久精品99| 国产乱子伦一区二区三区国色天香| www国产无套内射com| 在线观看欧美| 久久久久久久久久久人体| 91嫩草在线播放| 日韩欧美一区视频| 极品美妇后花庭翘臀娇吟小说| 奇米色一区二区三区四区| 最新av在线免费观看| 警花av一区二区三区| 久久人人97超碰精品888| 未来日记在线观看| 欧美日韩在线免费视频| 国产亚洲成人av| 97久久久精品综合88久久| 在线看免费毛片| 欧美日韩18| 婷婷精品国产一区二区三区日韩| 成人黄色在线| 91精品国产自产91精品| 黄色美女网站在线观看| 精品国产精品网麻豆系列| 欧美性受xxx黑人xyx性爽| 综合久久久久综合| 素人fc2av清纯18岁| 麻豆成人免费电影| 久久久999视频| 色综合天天爱| 欧美一区1区三区3区公司| 天天综合在线观看| 国产精品福利无圣光在线一区| 成年人网站在线| 日韩中文字幕在线播放| 97香蕉久久| 日韩视频一区二区在线观看| 五月天中文字幕| 亚洲一区二区三区四区中文字幕| 人与动物性xxxx| 91网站在线播放| 国产精品一区二区在线免费观看| 爽好久久久欧美精品| 777久久久精品一区二区三区| 天堂美国久久| 在线观看视频黄色| 国产伦精品一区二区三区视频 | 男人添女人荫蒂国产| 日韩有码一区二区三区| 成人久久久久久久久| 午夜性色一区二区三区免费视频| 一级黄色免费在线观看| 国产精品日韩精品中文字幕| 精品无人区一区二区三区| 亚洲三区欧美一区国产二区| 91久久久亚洲精品| 视频精品导航| 国产一区二区在线免费视频| 欧美1级2级| 国产精品永久在线| 亚洲成人短视频| 国产精品嫩草影院一区二区| 欧美男人天堂| 日韩av电影国产| 在线免费日韩片| 国产精品男人的天堂| 日韩三区在线| 成人黄色av免费在线观看| 日韩av一级| 亚洲一区二区三区视频| 91视频亚洲| 国产尤物99| 天堂在线精品| 一道精品一区二区三区| 91亚洲成人| 国产真人做爰毛片视频直播| 欧美日韩1区| 国产一级片黄色| 日本不卡不码高清免费观看| 97人人模人人爽人人澡| 国产精品99久久久久久久vr| 中文在线永久免费观看| 久久综合狠狠综合久久综合88|