单选题 Americans eat(____) vegetables per person today as they did in 1910.

单选题 That way of speaking is peculiar(____) people in this small part of the country.

单选题 Passage Twenty - Seven Out of all the students who enroll in a massive open online course【MOOC】， only about 5 percent complete the course and receive a certificate of accomplishment. This statistic is often cited as evidence that MOOCs are fatally flawed(有缺陷的)and offer little educational value to most students. Yet more than 80 percent of students who fill out a post - course survey say they met their primary objective. How do we look at these two facts? We’re used to focusing on completion rates in higher education， but they’re not the only — or even the most meaningful — indicator of engagement in open online courses. With no cost to enroll， no punishment for dropping out， and little reward for actually earning a certificate， MOOCs are fundamentally different from traditional classes — and students use them in fundamentally different ways. Data from more than 1.8 million students enrolled in 36 MOOCs offered by the University of Pennsylvania show that students treat MOOCs as a buffet(自助餐)， sampling the material according to their interests and career goals. Some are curious about the subject matter and just watch one or two video lectures others use the discussion forums to connect with their intellectual peers around the world. Of all enrolled students， nearly 60 percent watch at least one video， complete at least one assignment， or post at least once in a forum. So focusing on the tiny fraction of students who complete a MOOC is misguided. The more important number is the 60 percent engagement rate. Students may not finish a MOOC with a certificate of accomplishment， but the courses nonetheless meet the educational goals of millions. The sentence “students treat MOOCs as a buffet”(Para.3)( ).

单选题 Passage Twelve What are the differences between public and private in American higher education? A big difference involves money. Public colleges and universities charge for an education just like private schools. But state schools cost less because they get money from the states that started them to educate local citizens. As a result, out - of - state and international students usually pay more than state residents， at least the first year. The state with the most residents， almost forty million， is California. Its systems of two - year and four - year colleges and universities are among the largest in the world. But the example we are going to focus on today is to the north of California， in a much smaller state on the West Coast: Oregon. The University of Oregon， located in Eugene， is one of the campuses in the Oregon University System. The cost for undergraduates this year is $$6，000 for state residents. Housing is an additional $$8，000. Non - residents pay the same for housing —— but almost $$20，000 for tuition and fees. Let’s see how these numbers compare to a private college in Oregon. Lewis and Clark College in Portland has 4，000 students， compared to 20，000 at the University of Oregon. Housing costs $$800 more than at the state school. But the big difference is tuition. The published price at Lewis and Clark is almost $34，000. Yet Lewis and Clark is one of the few American colleges to offer financial aid for international students. Each year it awards financial aid to twenty students from other countries. And it says the average award last year was 19，000 dollars. That would make Lewis and Clark cheaper for international students than the University of Oregon. But， of course， prices alone do not say anything about the quality of a school or the value of an education. We can conclude from the passage that the cost and the quality of a university are

单选题 I’m sure that reserves of coal here are(____)to last for at least half a century.

单选题 Passage Twenty - Five Online dating has just been revealed to be one of the most common ways to start a relationship. But new research reveals that the concept is still highly flawed(有缺陷的). An analysis of 400 studies into online dating shows that while it offers access to plenty of other singles， users can be overwhelmed and put off by the volume of choice， defeating the purpose. The research， by Northwestern University and published in the journal Psychological Science in the public interest， found that the processes involved don’t lend themselves to forming strong relationships. The findings also indicated that the concept of an online profile(介绍)is not entirely useful and “can result in treating potential partners as mere objects”. Lead author Eli.J.Finkel explained， “Online dating is a terrific addition for singles to meet. However， there are two problems.” First， studying covers seemingly endless lists of profiles of people one does not know， as on Match.com， does not reveal much about them. Second， it “overloads people and they end up shutting down，” he said. He compared it to shopping at “supermarkets of love” and said psychological research shows people presented with too many choices tend to make lazy and often poor decisions. The study’s authors also questioned the algorithms(算法)employed by sites such as eHarmony.com to match people based on their interests or personality — comparing it to having a real estate agent of love. While the algorithm may reduce the number of potential partners from thousands to a few， they may be as unsuitable for each other as two people meeting at random， Dr.Finkel explained， adding the chances are no better than finding a relationship by walking into any bar. “There’s no better way to figure out whether you’re a match with somebody than talking to them over a coffee or beer，” Dr.Finkelsaid. What is the author’s attitude towards online dating?

单选题 Passage Fifteen Big data can be defined as information that is too big or complex to be contained or processed by any one machine or person. As a student at the University of Sussex， Julian Dailly had two majors—— English and philosophy. When he completed his studies， Dailly wondered how he would ever earn a living in a world filled with machines and technology. Now， he is part of the big data industry that includes Google and Facebook. Dailly’s research company， Morar Consulting， started three years ago with five employees. The company’s earnings have increased by 25% each year. It now employs 90 people. “What we do here is we try to discover what’s meaningful for people and link that to the economic behavior，” Dailly said. He noted the importance of working with people with different skills. “We have people from traditional research backgrounds， in addition to some in social sciences， economics， people from tech backgrounds， and salespeople，” Dailly said. Companies like Dailly’s employ recent college graduates. The industry profits from the ideas of these young men and women. New forms of data also make it possible for some observers to predict the future. They are more valuable to companies than the traditional forms of data recording or reporting. “We have access to the core information inside people’s heads，” Dailly said， “They tell you what people are going to do as opposed to what they’ve done. That helps people take proper action in advance. This makes it much more useful for strategy.” Julian Dailly dismisses concerns that computers have finally taken control of our daily lives. “Some may worry that humans will be allowed to be replaced by machines. I think it’s a fantasy.” According to Dailly， the idea that humans may be replaced by machines( ).

单选题 smaynotfinishMOOCwithacertificateofaccomplishment， butthecoursesnonethelessmeettheeducationalgoalsofmillions.Thesentence“students treatMOOCsasabuffet”(Para.3)().