Most people would be impressed by the high quality of medicine available to most Americans. There are a lot of specialization, a great deal of attention to the individual, a vast amount of advanced technical equipment, and intense effort not to make mistakes because of the financial risk which doctors and hospitals must face in the courts if they handle things badly.But the Americans are in a mess. The problem is the way in which health care is organized and financed. Contrary to public belief it is not just a free competition system. The private system has been joined by a large public system, because private care was simply not looking after the less fortunate and the elderly.9. The medical problems can be possibly solved by ____________.A. charging the patients as little as possibleB. limiting the number of doctorsC. making full use of the insurance companyD. controlling the health system effectively
Where can guests enjoy printing service?A. In the elevatorB. At the business centerC. In the dining hallD. In the guest bedroom
Researchers from a U.K.plant research institute have found a way to provide plants with an antibody-based defense for a specific threat，potentially speeding the creation of crops resistant to any kind of emerging virus，or bacterium （细菌）.The strategy is to inoculate a protein from the plant pathogen （ 病 原 体 ） to be targeted to a camel or other camel relatives，purify the unusually small antibodies the camels produce，and engineer the corresponding gene section for them into a plant's own immune gene.Farmers lose many billions of dollars to plant diseases each year，and emerging pathogens pose new threats to food security in the developing world.Plants have evolved their own immune system，kick-started by cell receptors that recognize general pathogen features，such as a bacterial cell wall，as well as intracellular receptors for molecules （分子） produced by specific pathogens.If a plant cell detects these molecules，it may trigger its own death to save the rest of the plant.But plant pathogens often evolve and escape from those receptors. A long-standing dream in plant biotechnology is to create designer disease resistance genes that could be produced as fast as pathogens emerge.One approach is to edit the gene for a plant immune receptor，changing the protein's shape to recognize a particular pathogenic molecule. Instead，Sophien Kamoun，a molecular biologist at the Sainsbury Laboratory，and his colleagues used an animal immune system to help make the receptor adjustments.During an infection with a new pathogen，animals produce billions of slightly different antibodies，ultimately selecting and mass-producing those that best target the virus. Camelids，which include camels，are workhorses for antibody design because their immune systems create unusually small versions，called nano-bodies.As a proof of principle of the new plant defense strategy，Kamoun's group turned to two standard camelid nano-bodies that recognize two different molecules，including one called green fluorescent protein （GFP），to detect test viruses，in this case a potato virus，engineered to make the fluorescent proteins.They investigated how well plants with the nano-body-enhanced receptors detected the changed potato viruses.It was found that the plants increased an active immune response and experienced almost no viral reproduction. "The exciting part about this technology is that we have the potential of made-to-order resistance genes and keeping up with a pathogen，" Kamoun says. "This technology is a potential game changer，" says Jeff Dangl，a plant researcher at the University of North Carolina.Ksenia Krasileva，a scientist at the University of California，Berkeley，says the mixture of nano-bodies with plant immune receptors opens up a vast body of biomedical knowledge for plant scientists. "We can now dig into all of that research and translate it to save crops."（1）What does the underlined word "inoculate" in Paragraph 1 probably mean？ ____ A.Compare.B.Restore.C.Introduce.D.Label.（2）What is the main purpose of Paragraph 2？ ____ A.To illustrate the function of cells in saving the plant.B.To explain how to strengthen plant receptors effectively.C.To demonstrate the solutions to farmers' annual heavy losses.D.To reveal why plants fail to handle constantly-updated diseases.（3）What can we learn from the passage？ ____ A.Editing plant receptors is to match the shape of pathogens.B.Nano-bodies can help plants catch up with pathogen changes.C.Plants select the best antibodies from animals to fight viruses.D.Plants with nano-bodies respond actively in massive virus copying.（4）According to the passage，scientists will ____ .A.apply the outcome in the real worldB.prove the findings of resistance genesC.identify similar means to fight diseasesD.seek more support for the new strategy
Landing safely in bad weather is a(n)___ task for any pilot, and even the smallest error can lead to a disaster.A. challengingB. secureC. insignificantD. easy
请选择单词的正确释义 in a wayA. 立刻B. 完全地C. 相反地D. 在某种程度上
There are three types of chemical bonds: ______ bond, covalent bond and polar covalent bond.
In one of his final interviews from the International Space Station, astronaut Scott Kelly said that the Earth's atmosphere "looks very, very fragile" and "like something that we need to take care of." Kelly will return to Earth in March, but spoke with CNN's Chief Medical Correspondent Dr. Sanjay Gupta via satellite. During his time at the space station, Kelly has remained active on social media and often shares his unique perspective of the planet by posting photos. "There are definitely parts of Asia, Central America that when you look at them from space, you're always looking through a haze of pollution," Kelly said. "As far as the atmosphere is concerned, and being able to see the surface, you know, I would say definitely those areas that I mentioned look kind of sick."1.What is the news mainly about?A) Kelly’s unique perspective of the planet.B) Kelly’s viewpoint on earth’s atmosphere.C) The atmosphere in parts of Asia and Central America.D) Kelly’s interview by CNN Correspondent.2.What does Kelly usually do on social media?A) He has many interviews introducing life in space.B) He talks with his doctor about personal health.C) He posts photos to share his unique perspective of the Earth.D) He shares his story of life in parts of Asia and Central America.
As the international demand for narrative(叙事的)film/TV content continues to increase with popular streaming-|||-services like Netfii and others,the two questions then come:Will the coming generations receiv most of their-|||-entertiinment through vis means rather than through the written word and will such an increase of narrative fi ln sqrt (1)-|||-reduce the importance of reading?-|||-Growing examples of this trend include the diminishment(减少)of fiction in the common core (核心的)-|||-curriculum, the ever-risi culture of computer games,the wave of streaming services of wide international reach,and-|||-movies filled with special effects made for children and teenagers.Nor must we ignore the economic dangers that lie-|||-ahead for the written word. The narrative film industry is a moneymaker that dwarfs(使相形见绌)the publishing-|||-industry.-|||-The other underlying question, of course,is"Does it really matter if the written word bows to the world of film/-|||-TV?"From my point of view,any diminishment of fiction delivered by words is a loss for mankind.-|||-There is no greater human feature than the imagination.It lies at the very soul of the human species.It is the-|||-brain`s most powerful engine.It is the essential muscle of life and like all muscles it must be exercised and-|||-strengthened.-|||-Writing and reading are the principal tools that inspire,create and empower our imagination. Anything that-|||-diminishes that power is the enemy of mankind.-|||-It should be known that I am not opposed to new media and technological advance Instead,I have always felt-|||-it necessary to adapt to advancing technology.In fact,a number of my novels are in various stages of development for-|||-film,TV,and live stage productions.My hope is that the written word will only stand to be complemented(补充)by-|||-its visual counterparts((对应物),not pushed to the edge of extinction.-|||-Of course,there are those who will present arguments for the superiority of the moving image over the written-|||-word. Each has its place.My argument is for finding the right balance between it and the moving image.-|||-(2019·江西省名校第二次联考)-|||-9.In what way does narrative film/TV embarrass the written word?-|||-A. Economic benefits. B. International reach. C.Cultural influence. D.Educational importance.-|||-10.Why does the author value the role of the written word`?-|||-A. It strengthens our muscles. B.It helps sharpen imagination.-|||-C.It distinguishes man from each other. D.It paves the way for narrative film/TV.-|||-11.What is the author`s attitude towards technology?-|||-A.Cautious. B.Skeptical. C.Positive. D.Critical.-|||-12.What`s the author concerned about?-|||-A.The fate of the written word. B.The extinction of fiction.-|||-C.The impact of the written word. D.The future of the moving image.
defensive end player 2 everyone to have the chance-|||-to 3 education.In an effort to use his 4 to make-|||-a lasting impact on the younger generations,he decided-|||-to 5 the rest of this year's salary to a cause that-|||- 6 the right to a good education for all students.-|||-"As you may already know,I have 7 my first 6-|||-game checks to fund scholarships in my hometown of-|||-Charlottesville,Virginia,"says Long."Now,I'm pled--|||-ging(承诺)my last 10 game checks to organizations-|||- 8 educational equality and opportunity in St Louis,-|||-Boston and Philadelphia-the three cities that I've 9 -|||-home throughout my NFL career."-|||-While the athlete could have made a 10 (log )_(a)-1-|||-tion that would have made a huge difference in the lives-|||-of many,Long took his pledge one step 11 and com--|||-mitted to 12 the entire 2017 season without earning-|||-an income.-|||-Long believes that 13 is the best "gateway to a-|||-better tomorrow for all Americans".He is one of many-|||- 14 of superstars putting their resources to good-|||- 15 to make the world a better place.-|||-And the Eagles player isn't 16 with his own-|||-contribution.Long is 17 fans,businesses, - .-|||-one who can make a donation as part of his Pledge 10 For-|||-Tomorrow 18 ,an initiative(新举措)that supports-|||-educational equality.-|||-Although his initial pledge is 19 enough,-|||-Long's desire to 20 with as many people as possible-|||-to make a real difference is what earns him a goodwill-|||-MVP award in our book.-|||-1.A.scheduled B.determined-|||-C.supposed D.expected-|||-2.A.allows B.ensures-|||-C.wants D.promises-|||-3.A.get B.finishdefensive end player 2 everyone to have the chance-|||-to 3 education.In an effort to use his 4 to make-|||-a lasting impact on the younger generations,he decided-|||-to 5 the rest of this year's salary to a cause that-|||- 6 the right to a good education for all students.-|||-"As you may already know,I have 7 my first 6-|||-game checks to fund scholarships in my hometown of-|||-Charlottesville,Virginia,"says Long."Now,I'm pled--|||-ging(承诺)my last 10 game checks to organizations-|||- 8 educational equality and opportunity in St Louis,-|||-Boston and Philadelphia-the three cities that I've 9 -|||-home throughout my NFL career."-|||-While the athlete could have made a 10 (log )_(a)-1-|||-tion that would have made a huge difference in the lives-|||-of many,Long took his pledge one step 11 and com--|||-mitted to 12 the entire 2017 season without earning-|||-an income.-|||-Long believes that 13 is the best "gateway to a-|||-better tomorrow for all Americans".He is one of many-|||- 14 of superstars putting their resources to good-|||- 15 to make the world a better place.-|||-And the Eagles player isn't 16 with his own-|||-contribution.Long is 17 fans,businesses, - .-|||-one who can make a donation as part of his Pledge 10 For-|||-Tomorrow 18 ,an initiative(新举措)that supports-|||-educational equality.-|||-Although his initial pledge is 19 enough,-|||-Long's desire to 20 with as many people as possible-|||-to make a real difference is what earns him a goodwill-|||-MVP award in our book.-|||-1.A.scheduled B.determined-|||-C.supposed D.expected-|||-2.A.allows B.ensures-|||-C.wants D.promises-|||-3.A.get B.finish
My physics teacher said that light______ faster than sound.A. travelB. travelsC. traveledD. traveling
热门问题
question or statement.Hot pot is a traditional dish in China. It is believed to date back more than 1,000 years to the time of the Jin Dynasty. Hot pot's origins can be found in the dining practices of Mongolian horsemen who rode across the steppe and into northern China. Legend has it that the Mongols used their helmets as pots to simmer (炖) broth (汤底) over open fires, and cooked chunks of meat in the broth.Hot pot cooking seems to have spread to northern China during the Tang Dynasty. In the regional variations developed with different ingredients such as seafood. In the centuries that witnessed the growth of the Song Dynasty, hot pot moved — and changed — further south, with each successive region adapting it to their local ingredients and tastes.The ingredients in a hot pot vary a lot from region to region. Perhaps the most famous hot pot is the Chongqing or Sichuan hot pot. It features a dark red broth chock-full (塞满了的) of spices, chili peppers, and the uniquely mouth-numbing Sichuan peppers. In Beijing and elsewhere in the north, hot pot broth tends to be mild and, compared to its racy southern "cousins", a little light. In the northeast of China, a kind of local sauerkraut (酸菜) is used to add some tang (强烈的味道), making the broth a bit sour. People can choose a version of hot pot according to their taste.1 Hot pot is believed to date back more than 1,000 years to the time of _______.A. the Jin Dynasty B. the Tang DynastyC. the Song Dynasty D. the Yuan Dynasty
Elder and weaker Mr. Mag paid_visits to his old friends.A. scarceB. rare()C. insufficientD. inadequate
The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-cultural communication. Americans, however, have not been well trained in either area and, consequently, have not enjoyed the same level of success in negotiation in an international arena as have their foreign counterparts. Negotiating is the process of communicating back and forth for the purpose of reaching an agreement. It involves persuasion and compromise, but in order to participate in either one, the negotiators must understand the ways in which people are persuaded and how compromise is reached within the culture of the negotiation. In many international business negotiations abroad, Americans are perceived as wealthy and impersonal. It often appears to the foreign negotiator that the American represents a large multi-million-dollar corporation that can afford to pay the price without bargaining further. The American negotiator’s role becomes that of an impersonal supplier of information and cash. In studies of American negotiators abroad, several traits have been identified that may serve to confirm this stereotypical perception, while undermining the negotiator’s position. Two traits in particular that cause cross-cultural misunderstanding are directness and impatience on the part of the American negotiator. Furthermore, American negotiators often insist on realizing short-term goals. Foreign negotiators, on the other hand, may value the relationship established between negotiators and may be willing to invest time in it for long-term benefits. In order to solidify the relationship, they may opt for indirect interactions without regard for the time involved in getting to know the other negotiator. Clearly, perceptions and differences in values affect the outcomes of negotiations and the success of negotiators. For Americans to play a more effective role in international business negotiations, they must put forth more effort to improve cross-cultural understanding. [共5题](1)What kind of manager is needed in present international business and foreign investment? [本题2分]A. The man who represents a large multi-million-dollar corporation. B. The man with knowledge of foreign languages and skills in cross-cultural communication. C. The man who is wealthy and impersonal. D. The man who can negotiate with his foreign counterparts.
选择合适的单词补全句子。-|||-I __ in the city.-|||-live lives
选择合适的单词补全句子
拼写合适的单词补全句子(答案不区分大小写;单词提提示中一根小短线代表一个字母)Something that is inf- - - - - has no limit,end,or edge.
拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） Someone or something that is so---- is very serious rather than cheerful or humorous.
The coming of the railways in the 1830s ________ our society and economic life.A. transferredB. transformedC. transportedD. transmitted
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个字母 ) A seq----- of events or things is a number of events or things that come one after another in a particular order.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中根小短线代表一个 字母 ) A va---- is a space that contains no air or other gas.
6. The children will now play some pieces of music that they ______ themselves. A.were taught posed C.accomplished D.worked7. While she waited,she tried to ______ her mind with pleasant thoughts of the vacation. A.occupy pose C.think D.intensify8. In the film,the peaceful life of a monk ______ the violent life of a murderer. A.is compared with B.is compared to C.is contrasted to D.is contrasted with9. ______ to pay for an order is simplicity itself. A.Use plastic B.Using plastics C.Using plastic D.Used plastic10. Additional time is required for cooking or ______ homemade dishes. A.chill B.to chill C.chilled D.chilling
If you_________in a job for several years, you may be able to accumulate a lot of work experience and skills that would be beneficial to your future career development.A. have workedB. had workedC. have been workingD. had been working
一、拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） If someone is __ob---__ , they are extremely fat.
These drugs are available over-the-counter without a(n)__________. （）A. infectionB. dosageC. prescription
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To enh ---- something means to improve its value, quality, or attractiveness.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) If there is a bo-- in the economy, there is an increase in economic activity.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To aut _ _ _ _ _ a factory , office , or industrial process means to put in machines which can do the work instead of people.
ⅢComplete the following sentences with the given sentence structures-|||-get ready for.sa为························备-|||-e.g.Susan has to buy a lot of things to get ready for her trip.(苏珊不得不买很多东西为旅行做准备。)-|||-1 The boy got up early to __ (为上学做准备).-|||-2 I have a lot of work to do to __ (为明天做准备).
The Harry Potter series, written by J.K. Rowling, is perhaps the most popular set of novels of the modern era. With seven books and many successful films to its name, the series has gathered about 15 billion dollars in sales. How did the series become so popular? The reason can be broken down into several areas.The first book in the series was rejected 12 times before it was picked up by Bloomsbury—a small publisher in England. So receiving this contract was Rowling's first step to success. However, getting a book contract does not ensure the success of a book. The story was soon loved by children and adults alike. In light of this, Bloomsbury Publishing published a second version of the books with “adult” (less colorful and more boring) book covers. This made it easier for a full range of ages to enjoy the series.Another factor that worked like a charm was that the publisher and Rowling herself, through the books, conducted midnight releases, promotions, and pre-ordering more readers. Customers who feared that their local bookstore would run out of copies responded by pre-ordering over 700,000 copies before the July 8, 2000 release.What does the underlined word “releases” (Para. 3) mean?A. The activity that frees or expresses energy or emotion.B. The announcement about the book’s publishing information.C. The sales of books that is available only at midnight.