The periodic table is a fundamental tool in chemistry, listing every known (element).A. componentB. substanceC. compoundD. molecule
Diana’s house was crowded with happy people whose _______ outbursts of song were accompanied by lively music.A. substantialB. spontaneousC. simultaneousD. synthetic
When conducting a scientific experiment, it is important to control all ___ to ensure accurate results.A. varietiesB. variablesC. variationsD. alternatives
The designer decided to ______ the dress with intricate embroidery to make it more visually appealing . A pat B grab C pad D impact
* 本题备选项需点击原文空格处获取，在列表上点选即可。 In what’s probably the craziest headline I’ve ever written, I’ve reported that (26)_____ in livestock protection are happening with scientists painting eyes on the butts of cows. The experiment is based upon the idea that farmers who’re protecting their herd from lions would shoot and kill lions in an effort to protect their livestock. While this makes a lot of sense, it results in many lion deaths that (27)_____ would have been unnecessary. Researchers in Australia have been (28)_____ and testing a method of trickery to make lions think they are being watched by the painted eyes on cow butts. This idea is based on the principle that lions and other (29)_____ are far less likely to attack when they feel they are being watched. As conservation areas become smaller, lions are increasingly coming into contact with human populations, which are expanding to the (30)_____ of these protected areas. Efforts like painting eyes on cow butts may seem crazy at first, but they could make actual headway in the fight for conservation. “If the method works, it could provide farmers in Botswana—and (31)_____—with a low-cost, sustainable tool to protect their livestock, and a way to keep lions safe from being killed.” Lions are (32)_____ ambush (埋伏) hunters, so when they feel their prey has (33)_____ them, they usually give up on the hunt. Researchers are (34)_____ testing their idea on a select herd of cattle. They have painted half of the cows with eyes and left the other half as normal. Through satellite tracking of both the herd and the lions in the area, they will be able to (35)_____ if their psychological trickery will work to help keep farmers from shooting lions.
With human-like ______ control ability, this robot can walk with two legs, avoid obstacles, slope upward and downward stably, and withstand shocks. A reaction B behavior C movement D motion
Amino acids and glucose move across the membrane along the concentration gradient by ( )A. Active transportB. Facilitated diffusionC. Channels diffusionD. Simple diffusionE. ATP-driven pump
Being short of funding and qualified teachers, schools lag behind the fast developing computer science field.[A] As computer coding has become an increasingly sought-after skill, more K-12 schools are working it into their curriculums. Some states have considered allowing students to forgo (放弃) foreign language for coding classes, despite opposition from educators.[B] There’s a debate over whether it’s appropriate to teach coding in elementary schools, with fierce opinions on each side. When it comes to allowing coding to fill foreign language requirements, though, most educators agree: Coding should be added to curriculums, but not at the expense of foreign language classes.[C] The idea is that computer programming is a language, allowing people to communicate with machines and programs. It’s the language of the 21st century and more valuable than a natural language, some advocates argue. The computer science field is growing faster than schools can keep up because of budget constraints and a lack of skills training for teachers.[D] According to the 2016 U.S. News/Raytheon STEM Index, computer science jobs have helped boost wages in the U.S., and computer-related jobs hold the top seven positions in STEM fields for highest number of workers. Foreign language interest, on the other hand, is declining for the first time since 1995. The number of higher education language enrollments declined between 2009 and 2013 by more than 111,000 spots, according to the Modern Language Association of America.[E] “I think the opportunity to give people a choice is important,” says Florida state Senator Jeremy Ring, who introduced a bill last year that would allow Florida students to choose between foreign language and coding classes for the purpose of university admissions requirements. “I think if you’re going to give two years of language in high school, you might as well do computer coding.”请选择和题干内容相一致的段落。A、[A]B、[B]C、[C]D、[D]E、[E]
Passage One Questions 46 to 50 are based on the following passage. We're eating more fish than ever these days. At around 20 kilograms per person global fish consumption is now more than twice what it was in the 1960s. What's really remarkable, though, is where that fish comes from. For the first time in human history, most of our aquatic(水产的) food now comes from farming rather than fishing. People ate around 73 million tonnes of farmed fish—just more than half of the volume of fish that humans consumed—in 2014. That's out of a total fish supply of 167 million tonnes; the remaining 20 million or so tonnes go into things like animal feed and medical products. To keep eating fish at the current rate, we're definitely going to need to keep aquaculture(水产养殖) developing. That's because the volume offish caught in the wild has leveled off since the 1990s. Back in 1974, only 10%of marine fish stocks had been overfished. Now, more than three-tenths are. Only a tenth of our oceans' fish stocks could sustain heavier fishing than current levels. But while catchings at sea have suffered, fish-farming has been growing at a fast rate. A lot of that is coming from China, which produces 60% of the world's farmed fish. In fact, some 35 countries, including China, now produce more farmed than wild-caught fish. This shift toward aquaculture isn't just good for ensuring salmon(三文鱼) on your plate; it's also crucial to ensuring food security and sustainability. By 2050, the world will need to feed an estimated 9.7 billion people. They'll have to get their protein somewhere. However, raising cattle, pigs, and other land-based animals requires vast sums of grain and water. For example, pound for pound, beef requires 15 times more feed to raise than carp, a freshwater fish farmed all over Asia. That grain-and the water needed to grow it-could be consumed by people instead. However, aquaculture is no silver bullet. In some southeast Asian countries, shrimp farming does disastrous damage to marine ecosystems. Despite these problems, however, shrimp continues to be among the most popular sea foods worldwide. 46. What does the author say is remarkable about the fish we eat?A) They reproduce quickly.B) They are mostly farmed.C) They have become as important as grain.D) They have a longer history than humans. 47. What do we need to do if we keep consuming fish at the current rate?A) Increase the fishing volume considerably.B) Develop more advanced fishing technology.C) Enlarge the marine fish stocks effectively.D) Expand the scale offish-farming continuously. 48. What does the author say about China in terms of aquatic food?A) It places increasing emphasis on fishing now.B) It boasts of the world's largest fishing stocks.C) It raises more fish than caught from the wild.D) It supplies 60%of the world's fish products. 49. Why does the author say aquaculture is so important these days?A) It is a must for feeding the world's fast-growing population.B) It proves a reliable source of protein for humans and animals.C) It is essential to maintaining both mental and physical health.D) It ensures a balanced healthy diet for people the world over. 50. What does the author imply by saying aquaculture is no silver bullet?A) Shrimp-farming is a risky business.B) Fish-farming will not be sustainable.C) Fish-farming may cause serious problems too.D) Shrimp-farming can become quite expensive.
A)periodic B) stimulate C)pursue D)formulate-|||-E) tangible F)appeal G) testimonies H)contribute-|||-l) fulfills J)discern K)mingled L) transcend-|||-M) measured N)connections 0)hypotheses-|||-There has been growing pressure, in the US and elsewhere, to demonstrate the value of university education and research in-|||-terms of its direct,31) economic benefits.-|||-It is certainly important that university research 32) to economic well-being -as it surely does. And it is-|||-certainly important that a university education helps students to 33) useful and satisfying work-as it does.At-|||-the same time,however, there is much more to excellent education than can be 34) 1 in dollars. The best-|||-education not only helps us to be more productive in our professions,but also enables us to 35) primary-|||-core objectives in life, makes us more inquiring and insightful, and helps us become more reflective and 36)-|||- human beings.It helps scientists to appreciate the arts,and artists to appreciate the sciences.It helps us-|||-to see 37) __ across diferent fields of learning that we otherwise might not grasp. It helps us to 38)-|||-__ right from wrong and lead more interesting and valuable lives, as individuals,and as members of our-|||-communities.-|||-There is a strong belief that a university education should 39) __ our curiosity and open our minds to new-|||-ideas and experiences.It should encourage us to test our various pre-existing 40) __ and think about our-|||-values and beliefs.That is one reason we study -the philosophy,customs and ways of life of other countries and cultures.In-|||-doing so,we learn more not only about other people but also about ourselves.
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23．有一串钥匙在沙发上。Aset of keys _______on the sofa./ There is _________on the sofa.24．问李老师要你的书吧。________Ms. Li ________yourbook!25．请给老赵打电话。_________Old Zhao ______13096935553..26．这条蓝色的裤子是他的吗？Isthis pair of trousers _________?27．我的父母在第一张照片里。_______________are in the first photo.28．谢谢你帮助我。Thankyou for ________________./ Thank you for _____________.29．那个女孩姓王。Thegirl’s __________is Wang./ The girl’s ______________is Wang.30．那只小狗叫什么名字？What’s__________the dog? / What’s ____________name?31．今天玩得开心点！___________today! / Have a good time today!32．这有两张漂亮的她家的全家福。Here_______two nice photos of her family.
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.
Fill in the blanks with the words given below.Change the form where necessary.Each word can be used only once. budget defy dilemma diverseloyalty manipulate objectivePerspective tackle urge （1）The ____ of the "upright"message is to ask people to save，while the "permissive"message asks people to spend.（2）If you find yourself in a（n） ____ about what is the right decision for your career，speak to a career counselor.（3）It is important for parents to listen to their children's opinion because they may have a very different ____ on the things they've seen.（4）To cater for the different tastes of athletes from all over the world，the organizers of the Beijing Winter Olympics prepared ____ dishes.（5）If you want to save money for a rainy day making a（n） ____ is the first step you may want to take because it gives you a clear plan.（6）The Chinese legend goes that Yue Fei's mother tattooed four Chinese characters on his back to remind him of the importance of ____ to the nation.（7）When children are addicted to online games，they would often ____ their parents and stay online for hours every day.（8）The report goes on to ____ the technicians to take a more active role in developing the standards of artificial intelligence.
Whenever I have trouble ( ) many problems, I ask Jack for help.A. dealing withB. to deal withC. on dealing withD. deal with
Most children with healthy appetites are ready to eat almost anything that is offered them and a child rarely dislikes food (51) it is badly cooked. The way a meal is cooked and served is most important and an (52) served meal will often improve a child’s appetite. Never ask a child whether he likes or dislikes a food and never (53) likes and dislikes in front of him or allow anybody else to do so. If the father says he hates fat meat or the mother refuses vegetables in the child’s hearing he is (54) to copy this procedure. Take it (55) granted that he likes everything and he probably will. Nothing healthful should be omitted from the meal because of a (56) dislike. At meal times it is a good idea to give a child a small portion and let him (57) back for a second helping rather than give him as much as he is likely to eat all at once. Do not talk too much to the child (58) meal times, but let him get on with his food, and do not allow him to leave the table immediately after a meal or he will soon learn to swallow his food (59) he can hurry back to his toys. Under (60) circumstances must a child be coaxed or forced to eat.55（）。A. withB. asC. overD. for
26)Could she picture him ___ politics with her father in the drawing-room at her home ?A. discussingB. to discussC. as to discussD. that discusses
The coming of the railways in the 1830s ________ our society and economic life.A. transferredB. transformedC. transportedD. transmitted
In some families,new adults and kids seem to slip in effortlessly, ____ they have been there all along.A. whileB. thoughC. becauseD. as though
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
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.
Elder and weaker Mr. Mag paid_visits to his old friends.A. scarceB. rare()C. insufficientD. inadequate
We were always encouraged to focus on constructing the most out of the situation ______. A. at hand B. on hand C. in hand D. by hand
Dreams can be a rich source of ___________ for an artist. (inspire)
These drugs are available over-the-counter without a(n)__________. （）A. infectionB. dosageC. prescription
Never before in my career _ _ of an assignment A have l frightened B had I frightened C had I been frightened D have I been frightened
Responsibilities ______becoming a father.A. charge forB. go withC. save forD. go through
Americans experience more food recalls (召回) today than they did five years ago, especially when it comes to meat and poultry (家禽). Meat and poultry recalls increased by two-thirds from 2013 to 2018, while food recalls overall went up 10%, according to the report recently published by the U.S. Public Interest Research Group.Meanwhile, the U.S. Centers for Disease Control and Prevention estimates (估计) 48 million people get sick, 128,000 are hospitalized and 3,000 die from food-borne disease each year in the U.S. "We are looking for the farm-to-fork preventative solutions," said Adam Garber, the research group's consumer watchdog. "By doing that, we can protect people's health."Over the five-year period, poultry posted the most recalls (168), followed by beef (137) and pork (128). The report shows the most serious meat recalls are on the rise. Among meat and poultry, the number of Class I recalls has increased by 83%, nearly doubling. Class I, the most serious of the recalls, is issued when there is a reasonable probability that the food will cause health problems or death.53. When would Class I recalls be issued?A. When the food is likely to cause health problems or death.B. When there are too many complaints from customers.C. When the food problem lasts for five years.D. When the product quality is below standard.
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
1.A:Here is my business card.-|||-B: __-|||-A.Yes,the heat is killing me. B.Wonderful.Is it between-|||-school teams?-|||-C.Thank you for the nice party D.Thanks.This is mine.-|||-2.Alice:Is there any typical Chinese festival you celebrate every year?-|||-Bob: __-|||-A.Yes,the heat is killing me. B. I bet it will.-|||-C.It`s so stuffy and no wind at all. D.Yes,there are many.The-|||-Dragon Boat Festival is one of them.