单选题Franklin Delano Roosevelt was the U.S. President when many businesses were ______during the Great Depression. A．failing B．incorporating C．buying stocks D．expanding

单选题(To be measured) in terms of its members, teaching is (the world's biggest profession). Though the roles and functions of teachers (vary from country to country), the variations are generally greater within a country than (they are) between countries.

单选题______ production up by 60% , the company has had another excellent year.

单选题I doubt that any historically valid treatment of that presidential administration can emerge for at least another decade, if then. I confess that when I came out of the White House I signed up to do an "insider volume", but sober, professional second thoughts have led me to put that project on ice until at least 1980. The problem is that I simultaneously know too much, and not enough. I know what I thought was happening. But I cannot fully document what happened. And I have seen enough highly classified documents to know that most of what the observers thought was happening was at best half right, at worst dead wrong. This has steered me in a different direction as far as writing is concerned. I am now preparing what is frankly and unashamedly an ex parte memoir, "My Experiences in Washington." It is based on what I believed to be true, on the picture as I conceptualized it, of the presidential administration under which I worked.

单选题Nowadays, it seems that no one can ever avoid _______ the Internet.

单选题Doctors have long known that if a patient is______that he will recover and is treated with sympathy, his pain will often disappear.

单选题The top of the mountain is ______, but the trees grew part way up its slope.

单选题I became conscious of the ______between play and sport when I helped organize a sandlot football team at the age of 12.

单选题They ______ those who didn't conform to their ideas, and took advantage of those who agreed with them.

单选题On the memorable occasion, the soldiers ______ the Colonel when he arrived.

单选题This instrument, _____and operating next year, will consist of three telescopes.

单选题 Now medical researchers are discovering a truism: "alcohol and tobacco do not mix." These two substances, both dangerous to health, act synergistically, each making the other more powerful and thereby causing worse damage than either would do alone. Because of this interaction, the person who both smokes and drinks heavily may be at a greater risk of becoming ill than one who drinks like a fish, but never smokes or who smokes like a chimney, but never drinks. To get an idea of how this synergism may work, consider what happens when a smoker lights up a cigarette. With each puff he inhales at least 4,000 different chemicals. These include toxic hydrogen-cyanide, carbon monoxide and nitrogen-dioxide gases, and four dozen compounds such as benzo pyrene and radioactive polonium 210. All are known as carcinogens. Most chemical vapors in tobacco smoke get deposited in the mouth, nose, throat and lungs in a coating called tar. It is in this tar that most of the cancer--inducing potential of tobacco smoke lies. Then in a scenario typical of chronic heavy drinkers--most of whom also smoke--our smoker feels thirsty and washes down that smoke coating in his mouth and throat with whisky. The alcohol in his drink is not in itself a carcinogen, but it may act as a solvent, dissolving the tar-taped tobacco poisons, and easing the transport of carcinogens across membranes. Our smoker continues to drink. Soon he lights another cigarette and inhales deeply. Behind his embattled lungs, meanwhile, his liver has gone on full alert to save his life. The three-pound chemical factory, which cleans most toxins from the bloodstream, reacts to alcohol as a foreign substance and metabolizes 95 percent of it into other chemicals. But in turning its energy to clearing just one-half ounce of pure alcohol--the amount in a standard drink--per hour from our drinking smoker's blood, the liver's other metabolic functions suffer a sharp decrease. Poisons from tobacco smoke that otherwise would be removed from his blood within minutes are now allowed to flood his body for hours or days, depending on how much alcohol the liver must dispose of. The person who smokes one or two packs of cigarettes a day loses on average six to eight percent of his blood's oxygen carrying capacity. If our heavy smoker's use of alcohol has led to alcoholism, he is probably malnourished. This malnourishment compounds problems he is having with insufficient oxygen. His brain cells are dying from it. The synergistic effect of alcohol and tobacco may deliver a powerful blow to the cardiovascular system as well as the upper respiratory tract. For those prone to hypertension who drink more than two ounces of alcohol a day, high blood pressure is common and with it the increased risk of stroke and heart attack. For hypertensives who combine smoking and drinking, the risks are even greater.

单选题Building the Bird"s Nest calls for giant curving beams which crisscross in an ______ pattern of woven steel.

单选题On the outside, Betsy Lueth"s school looks like any other in this arty neighborhood of Minneapolis: a sprawling, boxy red brick building with plain steel doors. Yet inside, the blond, friendly Minnesotan presides over an institution unique in the heartland: Yinghua Academy, a chartered public school where elementary students of every ethnicity study subjects ranging from math to American history in Mandarin. The idea behind Yinghua, as with many immersion programs, is to introduce kids to the language and culture as early as possible—ideally, before age 12, while they"re still absorbing information like sponges. Kindergartners and first-graders are taught exclusively in Mandarin, and a single period of English is introduced in the second grade. By the sixth grade, kids are learning half in English and half in Mandarin, with the expectation of proficiency in both. The challenges at Yinghua are numerous. Most teachers come from Taiwan or mainland of China, and cultural misunderstandings prevail. Lueth"s instructors are learning to be tolerant of local norms like nontraditional families and boys who cry—as well as a lot more parental input than they"re used to. "In China, teachers are revered. They are not questioned," says Luyi Lien, Yinghua"s Taiwan-born academic director. "In America, parents are more expressive of their opinions. " Yinghua"s student body, once 70% Asian, is now 50% white, black or Hispanic. The school has more than tripled its enrollment, to 300 kids, many of whom commute an hour each day. Research has shown that in the long run, immersion programs can provide cognitive benefits, including more flexible, creative thinking. Though students from the programs lag for a few years in English, by the fifth grade they perform as well as or better than their monolingual peers on standardized reading and math tests. For multicultural families, the psychological boost can also be important. Lueth"s adopted daughter, Lucy, used to squirm when cousins asked why her skin color was different from theirs. Now, Lucy proudly answers them, "Yeah, I was born in China. " Lueth recently won an $800,000 grant from the Department of Education to develop a teaching model for immersion middle schools, and she advises educators around the country who are starting their own programs. If Yinghua can make Mandarin a success in Minnesota, so can they. "This is a glorious culture and an increasingly important language that we are meaningfully teaching to our children. And we"re in the middle of nowhere. "

单选题Then the speaker ______ the various factors leading to the present economic crisis.A. went for B. went after C. went into D. went on

单选题A ______ person is one who is good at a number of different things.

单选题In primitive times, poetry was written to be heard. Today, we frequently overlook the of the poet's work. A. stylistic B. verbal C. primary D. oral

单选题 The physician was becoming exasperated with all the questions they were asking.

单选题A In his B latest article, the reporter criticized the way C which the racial problem was D being handled .