单选题A: Excuse me, boss. There's a Jack Welsh on the line. Do you want to talk to him?B: ______

单选题A: I'm much grateful to you for everything you've done for me.B: ______

单选题According to Todd Litman, the upgrade proposal .

单选题Earth has an atmosphere, which protects the surface from harmful {{U}}rays. {{/U}}

单选题Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts-Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe, "the streets would be littered with people lying here and there." Though the public increasingly demands no-risk food, there is no such thing. Bruce Ames, chairman of the biochemistry department at the University of California, Berkeley, points out that up to 10% of a plant's weight is made up of natural pesticide (杀虫剂). Says he. "Since plants do not have jaws or teeth to protect themselves, they employ chemical warfare." And many naturally produced chemicals, though occurring in tiny amounts, prove in laboratory tests to be strong carcinogens--a substance that can cause cancer. Mushrooms (蘑菇) might be banned if they were judged by the same standards that apply to food additives (添加剂). Declares Christina Stark, a nutritionist at Cornell University: "We've got far worse natural chemicals in the food supply than anything man-made. Yet the issues are not that simple. While Americans have no reason to be terrified to sit down at the dinner table, they have every reason to demand significant improvements in food and water safety. They unconsciously and unwillingly take in too much of too many dangerous chemicals. If food already contains natural carcinogens, it does not make much sense to add dozens of new man-made ones. Though most people will withstand the small amounts of contaminants generally found in food and water, at least a few individuals will probably get cancer one day because of what they eat and drink. To make good food and water supplies even better, the Government needs to tighten its regulatory standards, stiffen its inspection program and strengthen its enforcement policies. The food industry should modify some long-accepted practices or turn to less hazardous alternatives. Perhaps most important, consumers will have to do a better job of learning how to select and cook food properly. The problems that need to be tackled exist all along the food-supply chain, from fields to processing plants to kitchens.

单选题Seeing the ghost-like figure, the man fled, ______ the door behind him.

单选题Why does the author attach so much importance to humanistic studies?

单选题Woman: So you finally listen to your wife's advice and give up smoking. Man: It was my doctor's advice. I'm suffering from high-blood pressure. Question: What do we learn from the conversation?

单选题Which of the following best describes the author's attitude towards busing cutbacks?

单选题The rude boy was ______ by his teacher for his bad behaviour.

单选题Man: Mary, did you drop off the roll of film for developing? Woman: No, I got Susan to do it. Question: What happened to the roll of film?

单选题Animals' intelligence is determined by the size of the brain ______ the size of the body.

单选题Woman. How long has Alex been working on his degree? Five years? Man: At least that long. Question: What are they saying about Alex?

单选题He noticed that Joan' was studying him closely, but her expression (gave away) nothing of what she was thinking.

单选题Friction between America's military and its civilian overseers is nothing new. America's 220-year experiment in civilian control of the military is a recipe for friction. The nation's history has seen a series of shifts in decision-making power among the White House, the civilian secretaries and the uniformed elite (精英). However, what may seem on the outside an unstable and special system of power sharing has, without a doubt, been a key to two centuries of military success. In the infighting dated to the revolution, George Washington waged a continual struggle not just for money, but to control the actual battle plan. The framers of the Constitution sought to clarify things by making the president the "commander in chief. " Not since Washington wore his uniform and led the troops across the Alleghenies to quell (镇压) the Whiskey Rebellion has a sitting president taken command in the field. Yet the absolute authority of the president ensures his direct command. The president was boss, and everyone in uniform knew it. In the Civil War, Abraham Lincoln dealt directly with his generals, and Secretary of War Edwin M. Stanton handled administrative details. Lincoln, inexperienced in military matters, initially deferred (顺从) to his generals. But when their caution proved disastrous, he issued his General War Order No. 1—explicitly commanding a general advance of all Union forces. Some generals, George B. McClellan in particular, bridled at his handson direction. But in constitutional terms, Lincoln was in the right. His most important decision was to put Ulysses S. Grant in charge of the Union Army in 1864. Left to its own timetable, the military establishment would never have touched Grant. The relationship between the president and his general provides a textbook lesson in civilian control and power sharing. Grant was a general who would take the fight to the enemy, and not second-guess the president's political decisions. Unlike McClellan, for example, Grant cooperated wholeheartedly in recruiting black soldiers. For his part, Lincoln did not meddle in operations and did not visit the headquarters in the field unless invited. The balance set up by Grant and Lincoln stayed more or less in place through World War Ⅰ. Not until World War Ⅱ did the pendulum finally swing back toward the White House. Franklin Roosevelt, who had been assistant Navy secretary during World War Ⅰ, was as well prepared to be commander in chief as any wartime president since George Washington.

单选题Is the theory of evolution in direct ______ with religious teachings, or does it leave room for debate?

单选题A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of" news from local crime to international politics, from sport to business to fashion to science, and the range of comment and special features (特写) as well, from editorial page to feature articles and interviews to criticism of books, art, theatre and music. A newspaper is even more remarkable for the way one reads it: never completely, never straight through, but always by jumping from here to there, in and out, glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next. A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What brings this variety together in one place is its topicality (时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient (短暂的) value. For all these reasons, no two people really read the same paper: what each person does is to put together out of the pages of that day's paper, his own se- lection and sequence, his own newspaper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.

单选题Although buses in this district are {{U}}scheduled{{/U}} to depart at a certain hour, they are often late.

单选题International ocean shipping constitutes a highly significant aspect of world economic and political relationships. The rapid growth in world trade and the emergence of new national entities in the last 30 years have further emphasized the role of international shipping. Because of the generally free environment in which it has operated, the industry is highly mobile and flexible—characteristics that, together with technological progress, have facilitated the rapid growth in world trade. In recent years, however, there have been several technological and institutional developments that are likely to have major efforts on the industry. One of the latter is the aggregation of conventions and practices known as the Law of the Sea, which has been discussed in the United Nations Conference on the Law of the Sea since 1958. The third UNCLOS began in 1974 and concluded when a treaty was issued on April 30, 1982. The treaty will enter in force when 60 nations have ratified it. How soon that will happen is, of course, not possible to say. What can be said is that a new legal structure governing the oceans appears to be evolving, with traditional principles giving way to new concepts. Since the environment in which an industry operates determines its structure and mode of operations, international shipping has been molded by the conventional principles governing the use of the oceans as highways and will be affected by shifts in the international climate and changes in the Law of Sea. Ocean shipping, as we know it today, has developed under the concepts of "freedom of the seas" and limited territorial waters with the rights of "innocent passage." Clearly, a new Law of the Sea derived from a reinterpretation of these concepts will significantly change the atmosphere in which the shipping industry operates and, accordingly, dictate revised policies and practices for both industry and public authorities. Minimally, ship operations must consider changes in the definitions of what constitutes the high seas. They must consider the corresponding changes in the jurisdiction of shipping lanes and coastal and open waters; compliance with rules for environmental protection; and vessel traffic controls in some areas. (355w)