【速度】+【越障练习】GMAT得阅读者得天下，大家一起来练阅读吧

进击的智人阿飞

BenedictFu19 发表于 2018-10-7 09:45
LZ请问回忆越障文章内容的时候，不回视的话怎么能回忆起这么多内容的，我读的速度还行，5分钟读完了， ...

最开始我也记不住很多内容，但是训练的时候我每读一段会努力回想之前的内容，然后提醒自己这段是什么作用，慢慢就记得多了。反正自己形成一个结构感而不是零散的内容很重要

进击的智人阿飞

【越障1-17】
计时  

+3行， +5行， 1min， +3行， +6行

part I The scientists found the clue of a "new moon" which is 8000 light-years away from the earth and a bit larger than earth. The " moon" is not in another system , belonging a accompanied star of Nupi and surrounfing Jupiter. The researchers observed a cluster of stars for years and they constantly test the light received by the star, and they accidentally found than the light is reduced at one moment. The most possible explanation is that there is another moon sheltering some of the light while orbiting. The researchers said the new "moon" is at the same relative posistion with earth and sun as the moon. If this is confirmed , its influence to the movement of earth can not be ignored, and the acknwledged theory of how the moon is formed would be changed . But they still can't explain how a planet of such size is formed.

Part II it's about a healthies diet. It's a new diet of loosing weight. It mixed the style of iceland, Italy, Norway etc. It is very close to a Mediterranian recipe, which contains mainly fish, nutes, correals and vegetables. But there is one thing different that M recipe uses olive oil but the diet don't. Instead, it consists of the food grown locally, including berries, fish, carrots.  It discouraged people to eat food containing oil like restaurant food or 熟食. The experts said, although eating fish is encouraged,people should be banned from eating fish from lower part of the food chain or large fish, but eat fish like salmon. This is a very enviromental friendly diet, for its focusing on local food, and very good for 心血管疾病。

Part III  the Nobel prize of chemistry this year is shared by three people in tribute to their jointing contribution of finding new way of "evolution".

The first one named arnod,comes from CIT. She finds a new way to generate enzyme. The process is similar to genetic edition. The meaning of this is to create new way to invent effective medicine and substances acceptable by humanbody.

the second one finds new way to generate biological protein, which is useful to solve the problem of 身体排异反应

The third one finds way to produce antibiotics. This makes it possible for human to fight cancer or the virus hurting immune system.

进击的智人阿飞

【越障1-17】 计时 8min 28s
主旨： 科学家想研究sexual selection这种事情在公的母的鸟中是否都会发生。  
结构：介绍sexual selection, 问题，实验介绍，实验结果，问题结论

大意：举了孔雀的例子，公孔雀的尾巴色彩很艳丽，母孔雀却没有。公孔雀的尾巴显示着基因的匹配能力，因此尾巴不够完美的孔雀是缺乏生育资格的，只有尾巴最艳丽，即基因最合适的孔雀才能传宗接代，这就叫sexual selection。 然而又说了野鸡的例子，即公野鸡和母野鸡脖子和冠色彩都很艳丽，色彩鲜艳是不利于躲避捕猎者的，所以这个特征肯定也是为了吸引伴侣。
科学家就想研究，这种sexual selection是不是在两性中都有体现。
实验：科学家旋律5900种鸟，观察它们从头，嘴，下巴，胸脯范围内的一万多个部位，将红绿蓝三种颜色作为量标，记录每个pulmage的鲜艳度的值，发现了以下结论。
1. 在公鸟主导的鸟社会，即这种鸟不需要养育孩子，那么公鸟的Pulmage将会非常鲜艳。
2. 在母鸟共同养育孩子的鸟社会，即公鸟有限，它跟很多母鸟交配，但是不是每个母鸟都有交配的机会，母鸟将会羽毛非常鲜艳
3. 热带的鸟比温带的鸟颜色鲜艳。原因可能是热带的物种很多，资源就相对有限，羽毛最鲜艳的鸟更能有机会抢占资源
4. 大鸟比小鸟普遍鲜艳，这是因为大鸟自卫能力强，不会想小鸟一样需要隐蔽自己

这几点大概可以解释山鸡的脖子为啥子是蓝色的，同时也得出结论： 这种sexual selection 确实是在公，母两性种都会体现。

AGYU

mark，跟着每天一起训练

进击的智人阿飞

【越障1-18】 地质


'Turbidity currents' are notjust currents, but involve movement of the seafloor itself （958 words)

Turbidity currents have historically been described asfast-moving currents that sweep down submarine canyons, carrying sand and mudinto the deep sea. But a new paper in Nature Communications shows that, rather than just consisting ofsediment-laden seawater flowing over the seafloor, turbidity currents alsoinvolve large-scale movements of the seafloor itself. This dramatic discovery,the result of an 18-month-long, multi-institutional study of Monterey Canyon,could help ocean engineers avoid damage to pipelines, communications cables,and other seafloor structures.

Geologists have known about turbidity currents since at least1929, when a large earthquake triggered a violent current thattraveled several hundred kilometers and damaged 12 trans-Atlanticcommunications cables. Turbidity currents are still a threat today, as peopleplace more and more cables, pipelines, and other structures on the seafloor.Turbidity currents are also important to petroleum geologists because theyleave behind layers of sediment that comprise some of the world's largest oilreserves.

Despitealmost a century of research, geologists have struggled to come up with aconceptual model that describes in detail how turbidity currents form andevolve. The Coordinated Canyon Experiment was designed, in part, to resolvethis debate. During this 18-month-long study, researchers from the Monterey BayAquarium Research Institute (MBARI), the U.S. Geological Survey, the Universityof Hull, the National Oceanography Centre, the University of Southampton, theUniversity of Durham, and the Ocean University of China combined theirexpertise and equipment to monitor a 50-kilometer-long (31-mile) stretch ofMonterey Canyon in unprecedented detail.

During theexperiment, researchers placed over 50 different instruments at seven differentlocations in the canyon andmade detailed measurements during 15 different turbidity flows. Almost all ofthe flows began near the head of the canyon in water less than about 300 meters(1,000 feet) deep. Once initiated, the flows traveled at least severalkilometers down the canyon. The three largest flows traveled over 50kilometers, sweeping past the deepest monitoring station in the canyon at adepth of 1,850 meters (6,000 feet).

Thisextensive research program showed that turbidity currents in Monterey Canyoninvolve both movements of water-saturated sediment and of sediment-laden water.As described in the recent Nature Communications paper, themost important part of the process is a dense layer of water-saturated sedimentthat moves rapidly over the bottom and remobilizes the upper few meters of thepreexisting seafloor.

This is very different from previous conceptual models of turbidity currents,which focused on flows of turbid, sediment-laden water traveling above theseafloor. The authors of the recent paper did observe plumes of sediment-ladenwater during turbidity events, but they suggest that these are secondaryfeatures that form when the pulse of saturated sediment mixes into theoverlying seawater.

"Thiswhole experiment was an attempt to learn what was going on at the bottom of thecanyon," said Charlie Paull, MBARI marine geologist and first author ofthe recent paper. "For years we have seen instruments on the bottom movein unexpected ways, and we suspected that the seafloor might be moving. Now wehave real data that show when, where, and how this happens."Among theinstruments used in the experiment were current meters mounted on sevenmoorings distributed along the canyon floor. Analyzing the data from theseinstruments and measuring the time it took for the flows to travel between themoorings, the researchers were surprised to find that the flows appeared totravel down the canyon at speeds greater than the actual measured watercurrents.

Although tilting and other movements of the current meters could explain someof these observations, the scientists eventually concluded that theirinstruments were not simply being moved by currents of turbid water flowingabove the seafloor.

Theresearchers also placed beach-ball-sized sensors called benthic event detectors(BEDs) in the seafloor. The BEDs were designed to be transported by turbidityflows while carrying instruments that recorded their depth, horizontal andvertical movement, and rotation. Other motion sensors were mounted on large,steel frames weighing up to 800 kilograms (1,760 pounds). These were designedto remain stationary while the flows passed around them.

However,both the BEDs and the heavy frames were carried far down the canyon duringstrong turbidity events. In fact, the heavy, awkwardly-shaped instrument framesoften traveled just as fast as the relatively light, streamlined BEDs.

The researchersalso noticed large sand waves, up to two meters (6.5 feet) tall, on the floorof the canyon. Repeated bottom surveys showed that these sand waves shifteddramatically during turbidity events, remolding the upper two to three metersof the seafloor. But the researchers still weren't sure exactly how thisremolding occurred.

Data fromthe BEDs provided an important clue. During many events, the BEDs did not justmove down the canyon into deeper water, but traveled as fast or faster than theoverlying water. They also moved up and down within the flow asmuch as three meters at regular intervals.

Theresearchers concluded that, rather than being "dragged" along thebottom by a strong current, their instruments were being "rafted" bya dense, bottom-hugging layer of water-saturated sediment. They hypothesizedthat the up-and-down motions of the BEDs occurred as the instruments traveledover individual sand waves. As Paull noted, "The BEDs provided anessential kernel of new data that allowed us to understand the movement of theseafloor for the first time."

"Textbooksand modelling efforts have traditionally focused on dilute flows ofsediment-laden water over the bottom," Paull added. "But we now knowthat dilute flows are just part of the equation. It turns out that they are thetail end of the process, which really begins at the seafloor."

进击的智人阿飞

【速度1-18】

计时1 （294 words）


'FreeCollege' Programs May Not Help Neediest Students

The ideaof free higher education is not a new one in some parts of the world.

But the idea has only recently increased in popularity in theUnited States as the cost of attending colleges and universities in the countryhas risen greatly.

In the last few years, several states have either launched orproposed programs offering very low to no cost higher education. However, twonew studies suggest these programs are failing to serve the people who needthem the most: people with little money.

Two programs that have recently received the most attentionoperate in New York and Tennessee. In 2014, Tennessee governor Bill Haslamcreated the Tennessee Promise program. This program covers tuition costsfor anyone in the state who wants to attend one of Tennessee's two-yearcommunity colleges.

New York governor Andrew Cuomo announced the creation of asimilar program in his state, called the Excelsior Scholarship in 2017. It aimsto cover the tuition at public institutions for residents whose yearlyhousehold income is below a given amount.That amount started at $100,000 in 2017. In 2019, New Yorkers with yearlyhousehold incomes below $125,000 can apply forthe program.

Yet recent reports from two higher education research groupsshow serious problems with the design of such programs.

Researchers with the Institute for Higher Education Policycentered their study on the New York and Tennessee programs. The two programsare both need-based forms of financial aid. That means the less money studentshave, the more money they get. But the institute's study found that the twoprograms share a quality researchers says harms low-income students. Theprograms are both designed to be forms of financial aid known as "lastdollar."

计时2 （266 words）

Lastdollar programs cover the remaining tuition costs students face after they havepaid what they can or made use of any other forms of financial aid. But, lastdollar programs do not consider the difference in need between students of differentincome levels, says Mamie Voight. She is the vice president of policy researchat the Institute for Higher Education Policy.

Voight notes that many low-income college students in the U.S.make use of other need-based aid programs, like the federal Pell grant program.And New York and Tennessee's last dollar programs do not separate the amount ofother aid a student is receiving from the money they already have.

So low-income New Yorkers or Tennesseans may appear to have moremoney than they actually do when they seek additional assistance from theirstate, Voight says. And a wealthier student will get more aid because theyappear to have greater remaining costs.

For example, Voight's study found that before the TennesseePromise program launched, the state's lowest income students had, on average,over $7,000 in unmet need. And since the program's launch, that need has stillnot been met. Meanwhile, students with more money have been receiving onaverage, about $1,500 from the program.

Voightsays the problem is that poorer students have to use the Pell grants and other"first dollar" aid to cover just the costs of tuition. But fees andadditional costs to higher education are not included in tuition. And the smallamounts of aid the Tennessee Promise program gives to low income students dolittle to help cover those expenses.

计时3 （292 words）

"Theystill ... need to pay for things like books and supplies ... housing andfood," Voight told VOA. "And these free college programs, at least inTennessee and New York, don't do anything to support low-income students inpaying for those other college costs."

Voight would like to see these programs become "firstdollar" aid. This means the states would cover as much of the tuition asstudents need based on their actual income level. Then low-income studentscould use federal and other forms of aid to cover the extra costs.

However, Mike Krause argues it is unreasonable to expect statesto change in the way Voight suggests they should. Krause is the executivedirector of the Tennessee Higher Education Committee.

He notes states such as his have limited financial resources andcannot offer the amounts of money federal and other aid programs can. Yet thatdoes not mean the programs do not serve a greater purpose.

He says that for years, many Tennesseans have not seen highereducation as a possibility because of the high costs. But once the message of"free college" began to spread in the state, many people beganreconsidering this belief, even if some costs are still involved.

"States have to operate within ... reality," Krausesaid. "So to just tell every single student, ‘You have a full scholarship'tomorrow, probably isn't possible. But ... if we get into, ‘In Tennessee,college is free, except for in the following circumstances...'the risk there is that you water down the message tostudents."

The results of the Tennessee Promise program's message areclear, says Krause. The state reports that its rate of students entering intohigher education has increased by almost 10 percent since the program started.

计时4 （297 words）

Also,Krause notes that the Tennessee Promise offers aid only for tuition atcommunity colleges, which higher income students usually do not attend. And8,000 of the Tennesseans who began studying in the time the program has beenoperating received Pell grants. This suggest that students with financial needare entering into higher education.

Still, the problem is not limited to how much financialassistance these programs are providing, says Katie Berger. She is apolicy expert with the research group the Education Trust, which released itsown study of 31 "free college" programs and proposals.

The study measured how well each of the 31 programs andproposals served low income students based on eight different qualities. Thestudy's findings showed that the programs and proposals made the ways in whichstudents receive their benefits needlessly complex or limiting.

For example, by limiting the program to community colleges, theTennessee Promise program limits the choices available to students. Andcommunity colleges do not always have the same supports and resources availablefor students as four-year schools, Berger says.

Anotherquality the Education Trust looked at was whether the aid these programs offerwould be considered a loan that students had to repay. This is the case forstudents receiving New York's Excelsior Scholarship if they leave the statewithin two to four years of completing their studies.

Berger notes special rules like these do not consider the needsof low-income students first. So, she says, the "free college"programs are working against themselves.

"A free college program can serve as a powerful messagingtool, telling students that ‘college is available to you,'" she said."However, the benefit of telling a low-incomestudent that they can afford college is ... undercut ifyou don't actually make it affordable."

计时5 （289 words）

NewTechnology Provides Early Warning for Heart Attacks

Researcherssay they have developed technology that could predict heart attacks yearsbefore they happen.

The researchers report using mathematical algorithms toexamine computed tomography, or CT, images of a patient's heart. A CT scan usesX-rays and a computer to make detailed pictures of bones, organs and othertissue inside the body.

The new method was developed by researchers at the Universityof Oxford in England. A report on their study was published in the medicaljournal The Lancet. Also taking part in the study were teams fromFriedrich-Alexander-University in Erlangen, Germany, and the ClevelandClinic in the United States.

Mostheart attacks result from a build-up of fatty tissue inside arteries thatcarry blood from the heart to other areas of the body. Too much buildup canblock this flow of blood and cause a heart attack.

Currently, doctors use CT scans to learn when a sticky substancecalled plaque has already built up inside an artery. The new technology isdesigned to predict which arteries are at risk for future buildup.

Theresearchers reported usingcomputer algorithms to examine CT scans to measure how much fat is presentaround heart arteries. That fat changes when an artery becomes inflamed,serving as an early warning system for heart attacks.

Charalambos Antoniades isa professor of cardiovascular medicine at Oxford University. He told theReuters news agency he believes the research shows this method could be veryeffective in getting patients to take early steps to prevent future problems.

"Say your arteries are inflamed and a narrowing willbe developed five years down the line. So maybe you can start preventivemeasures to avoid this formation of plaques," he said.

进击的智人阿飞

【速度1-18】
计时： +3行， +3行， +2行，+4行， +5行


part I   In some states of USA, the gov launched "education-aid " programme aiming at helping students with low-income to participate higher-education.
Like in tennesse, people can join community university free of charge. And in new york, there is a 10000 $ scholarship for those poverty-strken students.
But some people argues against that these programmes are "last -dollar' aid. They are not eventually targeted at those really in need. It doesn't sort people by different income levels. Also , they fail to cover  the fee of education falling out of tuition like food, clothes, accommodation, medical services.  
Although some governors are determinant to carry out more thorough help," the first dollar" aid, many are skeptical about the feasibility. The constaint is the high cost. The high cost itself is the reason why some regions fail to offer every one a chance to go to college. Also, there lies a difficulty in whether the gov can really find who should be the receivor of the aid, those community college students?  Lastly , some people are worried if the aid will be, in turn , the loan for those who doesn't manage to finish college.


Part II Scientists found a new way to predict the haert attack in advance. The principle is that the heart arouse in the fat in arteries around heart which is important for metabolism and air carrying. And early in life, the plague , a soft issue in arteries, has formed. So, through CT, doctors can see whether the arteries are inflammed.  If they are inflammmed, the person is likely to have heart attack.

进击的智人阿飞

【越障1-18】
计时9 min 04s
主旨：科学家发现turbidity的产生不仅是由于海底的水流，还因为seafloor本身在动。
结构： 以前的公认看法；研究turbidity的意义   ， 实验方法和过程描述  ， 实验结论    ， 实验和之前的类似实验有什么不同， 另外一个实验
大意： 介绍了turbidity是发生于海底峡谷的巨大水流，卷起海底的沉积物；turbidity具有破坏性，它经常破坏海底的电缆; 同时海底有一些主要的油井也受影响，所以能够了解turbidity的起源以及发展过程非常重要。以前的公认看法是turbidity源于water lament的活动，现在科学家发现其实也要受海底本身运动的影响
这是一个联合很多科学家的实验，历时3个月，跨度50公里海域，科学家观察了15个turbidity，测量了几百米水流扫过某机器的时间（？？？忘了），然后发现 水流到海底又荡起来后，还有一次加速。第二个发现是turbidity的速度大于测量的海底水流的速度。
这个实验与以前实验的不同在于，之前忽视了海底沉积物质的运动。
科学家倾向于认为是turbidity是被海底本身的地质运动以及水流共同带动，而不是其他可能，还源于第二个实验BEDS，就是安了几个球状测量仪在海底，这个测量仪可以测量角度，高度变化，压力等，发现在turidity产生时，海底确实有sand wave的产生。
得出结论如题。最后一段又在重复观点。

这篇文章前面结构还是很清晰的，但是后面读的我很难受，最后两段作者又重复了开头就说过的结论，用两段欸！ 可能是从博客摘的文章都有这个特点？？？

进击的智人阿飞

【速度1-19】


计时1 （271 words）


WestVirginia Cook-off Celebrates Unusual Foods

Wouldyou like to try turtle soup? How about a thicker,richer-tasting gumbo made with alligator meat?Or perhaps you would like a helping of chili madewith bear meat.

Foods like these might sound very appealing to some Americans,but not everyone. They were just a few of the unusual foods available at theWest Virginia Roadkill Cook-off. The cook-off festival takes place each year inPocahontas County, West Virginia.

Since 1991, the event has been held in the Appalachian Mountainsin the small town of Marlinton. The cook-off is a celebration of food dishesAmericans normally do not find in a restaurant. All the dishes are made withroadkill, meaning animals found on the side of the road after being struck by acar or truck.

Anyone can sign up to prepare food for the event. But at least25 percent of the meat must be "wild," meaning it came from eitherhunting or killing an animal, and not from a store.

This year, some of the dishes had names like "Drunken Deerin the Headlights" and "Hillbilly Mardi Gras Alligator and TurtleGumbo."

Part ofAppalachian Culture

Ben Wilfong is vice president of the Pocahontas County Chamberof Commerce, the organization that finances the roadkill cook-off. He says theevent started as simply an autumn harvest festival.

"Being Appalachia, and the wild game and history andculture, they decided to start the roadkill cook-off portion,"Wilfong noted. "Its meaning is to cook something that you could possiblyfind on the side of the road ...which is wildlife and part of Appalachianculture."

计时2 （257 words）

Wilfongsaid that people normally start planning a year before the cook-off to makesure they have enough wild meat. But he said the cooks never know exactly whatkind of food they will prepare until a few weeks before the festival, and thereare always surprises. In recent years, festival goers have enjoyed meat frompheasant, opossum, snake, and even iguana.

Bill Jordan, president of the chamber of commerce, said the ideafor the event came from a book called "West Virginian RoadkillCook-off." It was written by a West Virginian named Jeff Everball.

It did not take a long time for the cook-off to become popular.

"Eighty percent of the people here are not local, they arefrom Oklahoma, Texas, and Kansas," said Jordan. He added that people fromas far away as India and Germany have traveled to Marlinton for the festival.They come for the chance to try out food they have never had before.

While the festival is known as the "roadkill"cook-off, many of the cooks get their meat from hunting or businesses that sellunusual kinds of meats.

Wilfong noted that it is illegal in West Virginia to pick up animalsyou kill with a vehicle unless one gets approval from the local government.However, that does not mean the festival never has food dishes from actualroadkill.

"One year," Jordan said, "a guy showed up thatmorning unregistered with a deer on the back of his truck that he had just hitthat morning and wanted to cook it."

计时 3 (269 words )

Notjust for the food

There is more to the festival than just unusual foods. You canalso find hundreds of arts and craft dealers who sell their work. There is alsoa biscuit baking competition, and even a "RoadkillQueen" beauty competition.

The festival is not just about having a good time either. It isalso a money-making event for Marlinton and Pocahontas County.

"It's close to a $2 million economic impact,"says Wilfong. "The population of Pocahontas County is just slightly over8,500 people, and they get about 12,000 for the event."

Wilfong added that the festival provides money for allbusinesses in the area, such as fuel businesses, hotels, store owners andrestaurants.

For local people, it also is a great way to get involved in thecommunity.

Angela Lester and Peggie Stahl, from a group called the YouthHealth Service, were taking part for their second time. They made a chili witha combination of venison and bear meat, which won first place at the festivalthis year.

Lester said they decided to compete as way to get involved withtheir community, and because it was a lot of fun.

Lester said they got their bear meat mostly from hunting,"But we've all come up on bear that has been hit by a vehicle. I just hita deer the other day by accident."

The Roadkill Cook-off festival is held every year on the lastweekend of September. Cooking directions for some of the winning dishes fromearlier years can be found in the "Roadkill Cookbook," which can befound on the PocahontasCounty website.

计时4 （266 words）


Study:Nearly 10 Percent of US Airbnb Hosts Are Teachers

Peopleacross the world use Airbnb to offer their homes to travelersusually for a nightly fee. The home-sharing service provides some people a wayto make extra money while they work other jobs.

The company announced recently that one of its most popularprofessions among American Airbnb hosts is teaching.

The information came from an Airbnb study to find out whatindustries its American hosts work in.

The study found that almost 10 percent of U.S. Airbnb hosts in2017 identified themselves as teachers or in the field of education. The home-sharing service estimatedit has about 45,000 active teacher hosts in America. In addition, the studysays there are an estimated 75,000 other hosts living in households with ateacher.

American teacher hosts earned more than $160 million dollarsfrom Airbnb in 2017, the company said. That includes about $54 million earnedduring the summer alone. The average amount earned by teacher hosts individuallywas $6,500 in 2017.

The study did not provide data from hosts about why they chooseto become part of Airbnb. But the company noted that many teachers inAmerica face difficult economic situations.Airbnb says additional earnings from hosting can help.

The U.S.Department of Education reported this year that 94 percent ofpublic school teachers said they had spent their own money on some classroomsupplies in the 2015-2016 school year.

It also reported thataverage pay for public school teachers in 2015–2016 was lower than in the1990-1991 school year when the inflation rate is considered.

计时5 （252 words）

Somestates had even higher rates of teacher hosts than Airbnb's estimated nationalaverage.

The Midwestern state of Wisconsin had the highest estimatednumber of Airbnb teacher hosts at 26 percent. Utah was next highest at 25percent, followed by Ohio with 20 percent. Several other states had teacherhosts of between 14 to 17 percent.

The top city for teacher Airbnb hosts was Philadelphia,Pennsylvania, the company said. An estimated 17 percent of Airbnb hosts therewere teachers. Combined, they earned about $1.6 million in 2017 - $470,000 ofit during the summer. The yearly average of nights hosted by teachers in thecity was 69.

San Diego, California, was the next most popular city for Airbnbteacher hosts at 15 percent. The hosts earned an estimated total of $2.7million in 2017.

Airbnb spokesman Christopher Nulty told The Atlantic magazinethat the home-sharing industry is not a total solution for the current problems facing many teachers.But he said he thinks Airbnb can be an "important tool" to helpteachers make extra money and give them "the respect and dignity"they have earned.

The report on the number of teacher hosts comes as Airbnbcontinues to face opposition by activists and officials in some areas. U.S.critics of the company say the service is driving up rental marketprices in several cities. Elected officials in some areas have proposed orapproved rules to limit the influence of the service. Hotel companies have alsoprotested that the business presents unfair competition.

栋栋

发表于 2018-08-28 01:10:47
GMAT雪崩的惨痛经历，让我意识到阅读力是多么重要。阅读力不仅包括读懂，还包括逻辑阅读能力。前者由词...

Mark一下