A firefighter tried to get into the burning house, but he was forced toby the intense heat.

A . the lack of cooling effect on heated materials B . that it cannot be used in a dead ship situation with no electrical power to the CO pump C . that it breaks down under extreme heat to form poisonous gases D . there is no effect on a class A fire even in an enclosed space

A .  The fileset bos.perf.tools is not loaded on this system. B .  The fileset perfagent.tools is not loaded on this system. C .  The command topas is only available in AIX version 5.x. D .  The path variable does not include /usr/samples/kernel/. Either add it to the .profile or cd to that location and run the command again.

A . iptrace B . nslookup C . netstat D . traceroute

A．get to B．see to C．lead to D．stick to

A．The more research you do, the more familiar you are on a topic. B．The more essays you write, the more likely you become an expert. C．The more judgements you make, the more likely you will be rewarded. D．The more materials you collect, the less likely you will be an expert.

A．peaceful B．skilful C．silent D．calm

A、into B、within C、inside D、beyond

A．move on B．move off C．move out D．move along

Now, health advocates say, an ill-conceived redesign-has taken one of the more successful public-health campaigns—the Food Guide Pyramid—and rendered it confusing to the point of uselessness. Some of these critics worry that America's Department of Agriculture caved to pressure from parts of the food industry anxious to protect theft products. The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a base of gains, vegetables and fruits, followed by ever-decreasing amounts of dairy products, meat, sweets and oils. The agriculture department launched the pyramid in 1992 to replace its previous program, which was centered on the idea of four basic food groups. The "Basic Four" campaign showed a plate divided into quarters, and seemed to imply that meat and dairy products should make up haft of a healthy diet, with grains, fruits and vegetables making up the other half. It was replaced only over the strenuous objections of the meat and dairy industries. The old pyramid was undoubtedly imperfect. It failed to distinguish between a doughnut and a whole-grain roll, or a hamburger and a skinless chicken breast, and it did not make clear exactly how much of each foodstuff to eat. It did, however, manage to convey the basic idea of proper proportions in an easily understandable way. The new pyramid, called "My Pyramid", abandons the effort to provide this information. Instead, it has been simplified to a mere logo. The food groups are replaced with unlabelled, multi-colored vertical stripes which, in some versions, rise out of a cartoon jumble of foods that look like the aftermath of a riot at a grocery store. Anyone who wants to see how this translates into a healthy diet is invited to go to a website, put in their age, sex and activity level, and get a custom-designed pyramid, complete with healthy food choices and suggested portion sizes. This is free for those who are motivated, but might prove too much effort for those who most need such information. Admittedly, the designers of the new pyramid had a tough job to do. They were supposed to condense the advice in the 84-page United States' Dietary Guidelines into a simple, meaningful graphic suitable for printing on the back of a cereal box. And they had to do this in the face of pressure from dozens of special interest groups—from the country's Potato Board, which thought potatoes would look nice in the picture, to the Almond Board of California, which felt the same way about almonds. Even the National Watermelon Promotion Board and the California Avocado Commission were eager to see their products recognized. Nevertheless, many health advocates believe the new graphic is a missed opportunity. Although officials insist industry pressure had nothing to do with the eventual design, some critics suspect that political influence was at work. On the other hand, it is not clear how much good even the best graphic could do. Surveys found that 80% of Americans recognized the old Food Guide Pyramid—a big success in the world of public-health campaigns. Yet only 16% followed its advice. Trying to get Americans to eat a healthy diet is a frustrating business can be easily proved by the fact that A．public-health campaigns cannot compete with tempting flavors. B．snack-food and fast-food industries are flourishing in the US. C．most food in America are profoundly rich in fat and sugar. D．fat people account for a large proportion of American population.

A．cloak B．protect C．devise D．fix

A．see to B．stick to C．get to D．lead to

If you try to learn too many things at a time, you may get (confuse) ______ .

A.put off B.put out C.put on D.put forward

Racing through daytime meals is part of the pace of life in this country. Working time is considered precious. Others in public eating places are waiting for you to finish so that they too can be served and get back to work within the time allowed. Each person hurries to make room for the next person. If you don’t, waiters will hurry you. You also find drivers will be abrupt and that people will push past you.You will miss smiles, brief conversations, and small courtesies with strangers. Don’t take it personally. This is because people value time highly, and they resent someone else“wasting”it beyond a certain courtesy point. The view of time affects the importance we attach to patience. In the American system of values, patience is not a high priority. Many of us have what might be called “a short fuse.” We begin to move restlessly about if we feel time is slipping away without some return------be this in terms of pleasure, work value, or rest. Those coming from lands where time is looked upon differently may find this matter of pace to be one of their most difficult adjustments in both business and daily life. Many newcomers to the States will miss the opening courtesy of a business call, for example, they will miss the ritual socializing that goes with a welcoming cup of tea or coffee they may be traditional in their own country. They may miss leisurely business chats in a café or coffeehouse. Normally, Americans do not assess their visitors in such relaxed surroundings over prolonged small talks. We seek out evidence of past performance rather than evaluate a business colleague through social courtesies. Since we generally assess and probe professionally rather than socially, we start talking business very quickly. 1. The statement that Americans are impolite to their business colleagues is wrong. A: T B: F 2. In the fourth paragraph, ,a high priority？ means ,a first concern？ A: T B: F 3. Americans evaluate a business colleague by establishing business relations. A: T B: F 4. This passage mainly talks about how Americans do business with foreigners. A: T B: F 5. We can infer from the passage that the author’s tone in writing is praisful. A: T B: F

A．work out B．work toward C．work up D．work off

A．genuine B．generous C．genius D．gentle

A. No matter how B. No matter when C. No matter what D. No matter where