单选题The universe has more than 100 billion separate systems of stars and gas known as _____.AgalleriesBgangstersCgalaxiesDgarments
单选题
The universe has more than 100 billion separate systems of stars and gas known as _____.
A
galleries
B
gangsters
C
galaxies
D
garments
参考解析
解析：
galaxy银河系。gallery画廊。gangster歹徒。garment服装。
galaxy银河系。gallery画廊。gangster歹徒。garment服装。
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The world’s population continues to grow. There now are about 4 billion of us on earth. That could reach 6 billion by the end of the century and 11 billion in a further 75 years. Experts have long been concerned about such a growth. Where will we find the food, water, jobs, houses, school and health care for all these people?A major new study shows that the situation may be changing. A large and rapid drop in the world’s birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations.Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population grow.China is one of the nations that have made great progress in reducing its population growth. China has already cut its rate of population growth by about half since 1970.Each Chinese family is now urged to have no more than one child. And the hope is to reach a zero population growth with the total number of births equaling the total number of deaths by the year 2000.Several nations in Europe already have fewer births than deaths. Experts said that these nations could face a serious shortage of workers in the future. And the persons who are working could face much higher taxes to help support the growing number of retired people.1. The world’s population could reach ____________.A. 6 billion in 75 yearsB. 11 billion in 2075C. 11 billion by the end of this centuryD. 600 million in 15 years2. Which of the following is true?A. The world’s birth rate is higher than ten years ago.B. There has been a slower population growth in the past ten years.C. Families are as large as before.D. Birth control has been well practiced in all nations.3. By the year 2000, the number of births and the number of deaths in China will _______.A. be greatly differentB. drop a great dealC. be equalD. become much larger4. According to the essay, China’s population control ________.A. is not quite successfulB. should be considered a big successC. is far from being successfulD. is a complete failure5. It may happen in the future that the people who are working in Europe will have to pay much higher taxes because___________.A. more and more children will be bornB. the number of retired people will become ever largerC. fewer and fewer children will be bornD. they will be making a lot of money
The American healthcare system has a unique problem with paperwork.The sheer number of participants-physicians,hospitals,clinics,insurance companies,patients--makes settling payments complicated,time-consuming and really expensive.The share of U.S.healthcare spending devoted to administrative costs is roughly three times what it is in other affluent countries.And it's a major reason the U.S.spends twice as much on healthcare.Some health clinics employ more clerks than care providers--not just to generate invoices but to send along the patient information insurers need to approve treatments,to dispute insurer decisions denying payment,to fix mistakes,to handle patients'questions,and on and on.For every I billion in revenue,the healthcare system employs the equivalent of 770 full-time people to settle the bills.That's almost eight times more than other industries.And doctors have to spend inordinate time dealing with red tape.Of course,if the U.S.were to magically switch to a single-payer healthcare system,these expenses would fall dramatically.The government would simply determine prices and write checks without dispute,as Medicare does for its direct beneficiaries.But such a change is neither realistic nor desirable in a country where half the population has employer-sponsored insurance.That said,it's still possible to trim administrative costs within the existing system.The best way to do so is for providers and insurers to standardize their billing practices and modernize their computer systems he federal government has long pushed for such efficiency.A 1996 law set some preliminary standards for the electronic processing of claims,payments and other transactions.But they weren't nearly enough,and insurers could still complicate invoices by requesting additional patient data.The HITECH Act of 2009 and the Affordable Care Act of 2010 gave providers further incentives to adopt electronic records and make them more uniform.Yet to a large extent,insurance companies continue to maintain distinct billing codes and torms,and providers still use separate computer systems for medical records and billing-making it im possible to automate claims processing.In this,healthcare stands apart from almost every other industry.Think of the way banks,for example,have standardized their operations to enable all customers to use the same ATMs and credit-card readers.The federal government needs to keep pushing for standardized electronic health systems,and also to change how healthcare prices are set.Bundled care and other alternatives to the fee-for-service model could greatly streamline billing.Patients have increasing cause to demand such change.With premiums,co-pays and deductibles rising,U.S.consumers now pay more for their health care than their employers do.Administrative inefficiency adds another layer of needless expense.Billing shouldn't have to be so complicated,or costly
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共用题干Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.What is the attitude the author has toward eating meat?A:Positive. B:Negative.C:Indifferent. D:None of the above.
共用题干第一篇U. S. to Start $3.2 Billion Child Health Study in JanuaryA study that will cost $3.2 billion and last more than two decades to track the health of 100,000 U.S.children from before birth to age 21 will be launched in January,U.S.health officials said on Friday.Officials from the U.S. government's National Institutes of Health said they hope the study,to be conducted at 105 locations throughout the United States,can help identify early-life influences that affect later development,with the goal of learning new ways to treat or prevent illness.The study will examine hereditary（遗传的）and environmental factors such as exposure to certain chemicals that affect health.Researchers will collect genetic and biological samples from people in the study as well as samples from the homes of the women and their babies including air,water,dust and materials used to construct their residences,the NIH said.Officials said more than $200 million has been spent already and the study is projected to cost $3.2 billion."We anticipate that in the long term（从长远说来）,what we learn from the study will result in a significant savings in the nation's health care costs,"Dr. Duane Alexander,who heads the NIH's Eunice Kennedy Shriver National Institute of Child Health and Human Development,told reporters.The study will begin in January when the University of North Carolina and the Mount Sinai School of Medicine in New York start signing up（使报名从事）pregnant women whose babies will then be followed to age 21.Some of the early findings will be about factors behind pre-term birth（早产）,which has become more common in recent years,according to Dr. Peter Scheidt of the NIH,who heads the study.The people taking part will be from rural,urban and suburban areas,from all income and educational levels and from all racial groups,the NIH said.The babies of the participants will be followed __________.A:throughout their livesB:for more than two decadesC:from birth to 21 monthsD:until they get married
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共用题干Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.Which of the following statements is true according to the book A Teen’s Guide to Going Vegetarian?A:Some of the highest pesticide residues appear in meat and eggs,B:A meatless diet does not provide enough nutrients.C:Protein can be found in almost every food,D:More than 80% of the corn in the U.S.are fed to livestock.
共用题干Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.Why does the author say reducing the amount of meat in one's diet is environmentally beneficial?A:People who eat meat usually have weaker immune systems compared to those of vegetarians.B:A lot of food and water are consumed in order to raise livestock.C:90% of animals are raised in confinement.D:Raising Animals causes most of the destruction of the nature.
共用题干第一篇US to Start $3.2 Billion Child Health Study in JanuaryA study that will cost$3.2 billion and last more than two decades to track the health of 100,000 US children from before birth to age 21 will be launched in January,US health officials said on Friday.Officials from the US government's National Institutes of Health said they hope the study,to be conducted at 105 locations throughout the United States,can help identify early-life influences that affect later development,with the goal of learning new ways to treat or prevent illness.The study will examine hereditary（遗传的）and environmental factors such as exposure to certain chemicals that affect health.Researchers will collect genetic and biological samples from people in the study as well as samples from the homes of the women and their babies including air,water,dust and materials used to construct their residences,the NIH said.Officials said more than $200 million has been spent already and the study is projected to cost$3.2 billion."We anticipate that in the long term（从长远来说）,what we learn from the study will result in a significant savings in the nation's health care costs,"Dr. Duane Alexander,who heads the NIH's Eunice Kennedy Shriver National Institute of Child Health and Human Development,told reporters.The study will begin in January when the University of North Carolina and the Mount Sinai School of Medicine in New York start signing up（签订协议）pregnant women whose babies will then be followed to age 21.Some of the early findings will be about factors behind pre-term birth（早产）,which has become more common in recent years,according to Dr. Peter Scheidt of the NIH,who heads the study.The people taking part will be from rural,urban and suburban areas,from all income and educational levels and from all racial groups,the NIH said.It is expected that through the study the nation's health care costs______.A:will be lowered in the long runB:will be significantly increasedC:will be more than $200 millionD:will reach $3.2 billion
可插入多行注释的 JavaScript 语法是？（）A、 /*This comment has more than one line*/ B、 //This comment has more than one line// C、 !--This comment has more than one line--
A customer’s small heterogeneous enterprise has grown over time to more than 500 client systems， and the administrator cannot add new servers to the management database. Which of the following is the most likely source of the problem？（）A、The management server has reached its size limitation.B、Additional agent licenses must be purchased.C、The CPU and Memory requirements need to be upgraded.D、The default JET database has reached its size limitation.
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问答题They were, by far, the largest and most distant objects that scientists had ever detected: a strip of enormous cosmic clouds some 15 billion light years from earth. 1) But even more important, it was the farthest that scientists had been able to look into the past, for what they were seeing were the patterns and structures that existed 15 billion years ago.That was just about the moment that the universe was born. What the researchers found was at once both amazing and expected; the US National Aeronautics and Space Administration’s Cosmic Background Explorer satellite—Cobe—had discovered landmark evidence that the universe did in fact begin with the primeval explosion that has become known as the Big Bang (the theory that the universe originated in an explosion from a single mass of energy). 2) The existence of the giant clouds was virtually required for the Big Bang, first put forward in the 1920s, to maintain its reign as the dominant explanation of the cosmos.According the theory, the universe burst into being as a submicroscopic, unimaginable dense knot of pure energy that flew outward in all directions, emitting radiation as it went, condensing into particles and then into atoms of gas. Over billions of years, the gas was compressed by gravity into galaxies, stars, plants and eventually, even humans. Cobe is designed to see just the biggest structures, but astronomers would like to see much smaller hot spots as well, the seeds of local objects like clusters and superclusters of galaxies. They shouldn’t have long to wait. 3) Astrophysicists working with ground based detectors at the South Pole and balloon borne instruments are closing in on such structures, and may report their findings soon. 4) If the small hot spots look as expected, that will be a triumph for yet another scientific idea, a refinement of the Big Bang called the inflationary universe theory.Inflation says that very early on, the universe expanded in size by more than a trillion fold in much less than a second, propelled by a sort of antigravity. 5) Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary particle physics, and many astrophysicists have been convinced for the better part of a decade that it is true.
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单选题In context, which of the following is the best revision of sentence 17 (reproduced below)?And, it’s safer and more reasonably priced than Las Vegas or Nashville with some of the same assets.A(As it is now)BAnd, even though it is safer and more reasonably priced than Las Vegas or Nashville, it has some of the sang assets.CAnd, because it is safer and more reasonably priced than Las Vegas or Nashville, it has some of the same assets.DHowever, it is safer and more reasonably priced than Las Vegas or Nashville, and it also has some of the same assets.ELastly, Branson is safer and more reasonably priced than either Las Vegas or Nashville, but has some of the same assets.
单选题The video security systems ______.Aplay an important role in arresting terrorists before they take actionBhave cost the U.S. Department of Homeland Security more than $ 40 million so farCare mainly deployed near WashingtonDwork better than they have been expected to
单选题Which statement is true about Malta’s immigrant population?AIt has a large immigrant population.BIts immigrant population is more than 3,000.CIts immigrant population totals 7,000.DIts immigrant population comes to less than 1% of the island’s 400, 000 population.
单选题The universe has more than 100 billion separate systems of stars and gas known as _____.AgalleriesBgangstersCgalaxiesDgarments
单选题可插入多行注释的 JavaScript 语法是？（）A /*This comment has more than one line*/ B //This comment has more than one line// C !--This comment has more than one line--