单选题At the party we found that shy girl______her mother all the time.

单选题Which of the following is NOT mentioned as a cause of the boating accidents?

单选题All the people ______ treatment protested that the medical fee was too high to be acceptable. A. of B. on C. with D. under

单选题If some of the players are not available to attend the NEC, we will make arrangements for the winning readers—who will be selected______—to meet the stars at a later date and present their award in person.

单选题 请选出下面划线部分读音不同的选项

单选题Is English ______ language spoken by ______ largest number of speakers in world? A./... the B. the/... C. the... the

单选题 Technology, Costs, Lack of Appeal Slow E-Textbook Adoption A. Textbooks are often a luxury for college senior Vatell Martin. The accounting major at Virginia State University got by in several courses with study groups and professors' lectures. 'It's not that I didn't want to buy,' he says. 'Sometimes, I just didn't have the money for a $200 book.' VSU knows Martin isn't the only one. More than half of its students routinely skip buying textbooks. For a solution, the school is turning to e-textbooks. B. VSU partnered with Flat World Knowledge, a start-up publisher that produces exclusively written e-books with 'open' content that can be modified by professors. In a trial with 14 business courses, students would be required to pay $20 and receive a Flat World e-book and digital learning supplements. The university and a local grant have been covering the cost, so far. 'That's nothing. It's what I put in my gas tank,' says Martin, who participated in the trial. 'If I was walking into a discussion on a topic, I can just download and take out the book and read it on my phone.' C. With their promise of ubiquity (无处不在), convenience and perhaps affordability, e-textbooks have arrived in fits and starts throughout college campuses. And publishers and book resellers are spending millions attracting students to their online stores and e-reader platforms as mobile technology improves the readability of the material on devices such as tablet computers. Silicon Valley start-ups, such as Inkling and Kno, are also aggressively reinventing textbooks with interactive graphics, videos and social-media features. D. Despite emerging attempts at innovation, the industry has been slowed by clumsy technology, the lasting appeal of print books, skeptical students who search online for cheaper alternatives, and customer confusion stemming from too many me-too e-textbook platforms that have failed to stand out. E. The late Steve Jobs, founder of Apple, believed textbooks to be an $8 billion market ripe for 'digital destruction,' biographer Walter Issacson writes in Steve Jobs. Apple is expected to make an announcement Thursday about its new education products. The market is small but growing. Sales for e-textbooks in the US higher education market grew 44.3% to $267.3 million in 2011, according to Simba Information, a publishing industry research firm. Print still rules F. So far, students have been less than impressed and more likely to choose print books. About 11% of college students have bought e-textbooks, according to market research firm Student Monitor. Availability isn't the chief problem. Most popular textbooks have a digital version, and they're available online. But students have largely stayed away because the most readily available technology today—PDF (portable document format) or other document reader versions of the print book—is clumsy and eye- straining to read. G. When Andrea Soto, a freshman biology major at the University of Maryland, bought Principles of Biology, the $192 price tag came with a free online version. She prefers the touchable presence of a thick book on her lap. 'You can't highlight or underline things in the e-book. I find it more of a trouble,' she says. However, digital books aren't necessarily cheaper, either. While priced lower than new print books, they're often more expensive than buying or renting used books online, says Kathy Mickey, an analyst at Simba. A federally funded pilot study at Daytona State College in Florida found that some students who rented an e-textbook paid only a dollar less than students who bought a print edition. And e-textbook users couldn't sell the book back after the class ended. H. Despite e-textbooks' shortcomings, most agree that the print market is ripe for a technological overhaul (彻底改革). Prices of new books are rising sharply. Authors complain about used book sales that don't generate royalties. Professors and students are annoyed at new editions that seemingly add little in content VS the previous one. I. 'This is an industry that's failing everyone—-parents, authors, professors, and students,' says Brad Wheeler, chief information officer at Indiana University, which is running a program that distributes cheaper e-textbooks but requires all students in the class to buy. Publishers are eager for a quicker transition to the format because e-textbooks cost less to publish and would generate income from every student who buys one. Digital books can't be resold, at least, not legally. 'We'd prefer that all of it to go digital,' says Vineet Madan, senior vice President of new ventures at McGraw-Hill Education. 'There isn't a secondary market for e-books.' Seeking market niche (商机) J. If current e-textbooks are mostly unappealing, what's next? Like online music in its infancy, the textbook industry's key players—publishers, resellers, bookstores, tech companies, even some universities—are all scrambling to offer their digital solutions, an effort that has only intensified with the arrival of tablet computers and app stores. 'Everybody and their brothers are coming out with an e-book platform,' says Iam Williams, director of strategic learning solutions at Wiley, a textbook publisher. K. They all agree on one thing: The quality of e-textbooks must improve dramatically. More value added, interactive features will keep students interested and spur sales, they say. Tablet computers are a key stimulus in this endeavor. At Kno, tablets have allowed the Santa Clara, Calif.-based company to embed interactive tools onto an existing e-textbook in a more intuitive way, for example, the ability to write directly on the book with a finger stroke or tap on a keyword for notes. 'Tablet was a needed development,' says Kno's founder Osman Rashid. Despite threats to their print book sales, university bookstores are also coming around to embracing e-books. Follett, which runs 930 university bookstores in North America, launched Follett CafeScribe last year, a cloud-based digital textbook platform. Publishers not on sidelines L. Textbook publishers are partnering with universities for exclusive trials, buying stakes in start-ups and developing their own technologies. Last year, publisher Cengage launched MindTap, an e-book/digital learning website that is now being tried by about 50 professors, says Bill Rieders, Cengage's executive vice President of global new media. Instead of tables of content, MindTap provides 'a learning path' that students can access for text, multimedia, self-assessment tools, quizzes and note sharing. M. Pearson has introduced a competing product, OpenClass. The cloud-based website—meaning students can access information wherever there's an online connection—features social networking, and works with Google Apps for Education. Reed College in Portland, Ore., is one of several universities that will test OpenClass this fall. N. The CourseLoad trial has been in place since 2009 on a limited basis, with students receiving free books. It has been expanded to 130 courses this spring semester. Students now pay a discounted price for access to CourseLoad books and learning kits, typically '60% to 70%' cheaper than new print books, Wheeler says. In exchange, students must pay a fee to enroll. Despite the lack of flexibility, school officials and students have embraced the low-cost approach, he says.

单选题 He does nothing that violates the interests of the collective.

单选题It's usually the ease that, when furious, people seldom act in a ______ way.

单选题The possibility that the explosion was caused by sabotage cannot be ______.

单选题阅读下面短文，请从短文后所给各题的4个选项（A、B、C、D）中选出1个最佳选项，并在答题卡相应位置上将该项涂黑。One day Mark was riding his bike when it began to rain.He started to feel cold so he looked for a divee to go under for shelter.He was disappoin

单选题You promised you would do it. Why did you go ______ on your word? A. back B. away C. over D. by

单选题选出下列选项中读音不同的选项（ ）

单选题Nowadays advertising costs are no longer in reasonable _____ to the total cost of the product.

单选题Have you ever played bridge?Yes. We__________ on weekends when I was in college.

单选题Speaker A: Wow ! How nice the room is !Speaker B:______

单选题______ Chicago is a beautiful city today, but ______ Chicago of the 1920s was a very dirty place.

单选题Organic food has no nutritional or health benefits over ordinary food, according to a major study. Researchers from the London School of Hygiene & Tropical Medicine said consumers were paying higher prices for organic food because of its imagined health benefits, creating a global organic market worth an estimated $48 billion in 2007. A systematic review of 162 scientific papers published in the scientific literature over the last 50 years, however, found there was no significant difference. "A small number of differences in nutrient content were found to exist between organically and conventionally(通常)produced foodstuffs, but these have nothing to do with public health, " said Alan Dangour, one of the report's authors. "Our review indicates that there is currently no evidence to support the selection of organically over conventionally produced foods on the basis of nutritional superiority. " The results of research, which was commissioned by the British government' s Food Standards Agency, were published in the American Journal of Clinical Nutrition. Sales of organic food have fallen in some markets, including Britain, as a slowdown in economic growth has led consumers to cut back on purchases. The Soil Association said that growth in sales of organic products in Britain slowed to just 1.7percent, well below the average annual growth rate of 26 percent over the last decade.

单选题通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。Over the summer, my family took a divip to Iceland to see the natural beauty of it.Little did I21　 I would wake up one morning to have my eyes swelled up（肿胀

单选题However dull work may be, it becomes bearable if it is a means of building up ______ , whether in the world at large or only in one's own circle. A. admiration B. vanity C. honor D. reputation