单选题Cranes are used to ______ building materials to the upper floors during the construction of skyscrapers.

单选题The new factory that has been built next to us has ______the value of our house. A. demoralized B. depreciated C. deterred D. derailed

单选题What's your attitude ______ his criticism?(2014年厦门大学考博试题)

单选题We can see how the product life cycle works by looking at the introduction of instant coffee. When it was introduced, most people did not like it as well as "regular" coffee and it took several years to gain general acceptance (introduction stage). At one point, though, Instant coffee grew rapidly in popularity and many brands were introduced (stage of rapid growth). After a while people became attached to one brand and sales leveled off (stage of maturity). Sales went into a slight decline (衰退)when freeze-dried coffees were introduced (stage of decline). The importance of the product life cycle to marketers is this: Different stages in the product life cycle call for different strategies. The goal is to extend product life so that sales and profits do not decline. One strategy is called market modification. It means that marketing managers look for new users and market sections. Did you know, for example, that the backpacks that so many students carry today were originally designed for the military? Market modification also means searching for increased usage among present customers or going for a different market, such as senior citizens. A marketer may re-position the product to appeal to new market sections. Another product extension Strategy is called product modification. It involves changing product quality, features, or style to attract new users or more usage from present users. American auto manufacturers are using quality improvement as one way to recapture world markets. Note, also, how auto manufacturers once changed styles dramatically from year to year to keep demand from falling.

单选题E-Business may mean all of the following except ______. A．e-commerce B．e-trade C．e-exchange D．online business dealings

单选题Even our Mitsubishi four-wheel-drive truck gets altitude sickness once in a while , so we like to give her a rest whenever we can.

单选题Trees should only be pruned (修剪) when there is a good reason for doing so. Many gardeners believe that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way. First, pruning may be done to make sure that trees have a desired shape. The object may be to get a tree of the right height, and to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus causing wounds. A tree may grow healthier by removing the branches that are locking up the centre and so preventing the free movement of air. One result of pruning is that an open wound is left on the tree and this provides an easy entry (进入) for diseases, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die. Pruning is usually done in winter, for then you can see the shape of the tree clearly without the interference from the leaves.

单选题It ______ nearly every, day here this mouth.

单选题The author doubts the legal right to lie to friends as well as the one to ______.

单选题The little girl held ______ in her hand.

单选题{{B}}Text 2{{/B}} At the start of the year, The Independent on Sunday argued that there were three overwhelming reasons why Iraq should not be invaded: there was no proof that Saddam posed an imminent threat; Iraq would be even more unstable as a result of its liberation; and a conflict would increase the threat posed by terrorists. What we did not know was that Tony Blair had received intelligence and advice that raised the very same points. Last week's report from the Intelligence and Security Committee included the revelation that some of the intelligence had warned that a war against Iraq risked an increased threat of terrorism. Why did Mr. Blair not make this evidence available to the public in the way that so much of the alarmist intelligence on Saddam's weapons was published? Why did he choose to ignore the intelligence and argue instead that the war was necessary, precisely because of the threat posed by international terrorism? There have been two parliamentary investigations into this war and the Hutton inquiry will reopen tomorrow. In their different ways they have been illuminating, but none of them has addressed the main issues relating to the war. The Foreign Affairs Committee had the scope to range widely, but chose to become entangled in the dispute between the Government and the BBC. The Intelligence Committee reached the conclusion that the Government's file on Saddam's weapons was not mixed up, but failed to explain why the intelligence was so hopelessly wrong. The Hutton inquiry is investigating the death of Dr. David Kelly, a personal tragedy of marginal relevance to the war against Iraq. Tony Blair has still to come under close examination about his conduct in the building-up to war. Instead, the Defence Secretary, Geoff Hoon, is being fingered as if he were master-minding the war behind everyone's backs from the Ministry' of Defence. Mr. Hoon is not a minister who dares to think without consulting Downing Street first. At all times he would have been dancing to Downing Street's tunes, Mr. Blair would be wrong to assume that he can draw a line under all of this by making Mr.Hoon the fall-guy. It was Mr. Blair who decided to take Britain to war, and a Cabinet of largely skeptical ministers that backed him. It was Mr. Blair who told MPs that unless Saddam was removed, terrorists would pose a greater global threat--even though he had received intelligence that suggested a war would lead to an increase in terrorism. Parliament should be the forum in which the Prime Minister is called more fully to account, but lain Duncan Smith's support for the war has neutered an already inept opposition. In the absence of proper parliamentary scrutiny, it is left to newspapers like this one to keep asking the most important questions until the Prime Minister answers them.

单选题A. closedB. listenedC. excusedD. watched

单选题In a survey conducted by research firm Harris Interactive, 71% of Americans said that spending extra money on travel during the holiday season is worthwhile—so long as it affords them time with family and friends. But just because traveling may be the right thing to do, that doesn"t mean it has to be the expensive thing to do. Traveling involves many hidden costs that, once you"re aware of them, are easy to spot—and even easier to eliminate. To start, consider transportation fees. For example, if you"re driving, fill up the gas tank before traveling on the highway, where it"s much costlier, says Clarky Davis, a personal finance expert. And make sure your car is in good condition by checking your heating vents, keeping up with routine maintenance and ensuring your tires are properly inflated, all of which help the car achieve favorable fuel economy. Furthermore, not only does a tow car (救援车) cause inconvenience; it also means extra costs. For those opting to fly, first, be aware of how much it costs to check a bag. Most airlines are charging for every checked bag by weight, but prices vary from carrier to carrier. If you can manage to pack everything into a carry-on, you"ll save at least $15. Brooke Ferencsik, a travel expert, suggests considering secondary airports when booking your flight. These airports often are less crowded and frequently offer cheaper tickets. And when it comes to your actual destination, don"t assume that hotels are going to cut back on fees simply because they"re desperate to draw customers. "They won"t be adding or increasing fees, but they won"t be decreasing them either," says Ferencsik. The best defense against extra fees is to read about the hotel"s rates online, before you make a reservation. "Be aware of surcharges for everything from housekeeping to grounds keeping to use of the in-room safe," says Ferenesik. Some hotels even install a sensor (传感器) within the mini bar, charging guests for simply touching the items, let alone eating or drinking them. "From airlines to hotels to rental cars, they"ve all got hidden fees you need to be aware of," says Ferencsik. "Do your homework and ask questions."

单选题Rubber differs from plastics ______ it is produced naturally and not in file lab.

单选题He opened his lips as if______ some reply.

单选题Cell membranes act as barriers to most, but not all, molecules. Development of a cell membrane that could allow some materials to pass while constraining the movement of other molecules was a major step in the evolution of the cell. Cell membranes are differentially permeable barriers separating the inner cellular environment from the outer cellular (or external) environment. Water potential is the tendency of water to move from an area of higher concentration to one of lower concentration. Energy exists in two forms: potential and kinetic. Water molecules move according to differences in potential energy between where they are and where they are going. Gravity and pressure are two enabling forces for this movement. These forces also operate in the hydrologic (water) cycle. Remember in the hydrologic cycle that water runs downhill (likewise it falls from the sky, to get into the sky it must be acted on by the sun and evaporated, thus needing energy input to power the cycle). Diffusion is the net movement of a substance (liquid or gas) from an area of higher concentration to one of lower concentration. You are on a large (10ftx10ftx10ft) elevator. An obnoxious individual with a lit cigar gets on at the third floor with the cigar still burning. You are also unfortunate enough to be in a very tall building and the person says "Hey we're both going to the 62nd floor!" Disliking smoke you move to the farthest corner you can. Eventually you are unable to escape the smoke! An example of diffusion in action. Nearer the source the concentration of a given substance increases. You probably experience this in class when someone arrives freshly doused in perfume or cologne, especially the cheap stuff. Since the molecules of any substance (solid, liquid, or gas) are in motion when that substance is above absolute zero (0 degrees Kelvin or -273 degrees C), energy is available for movement of the molecules from a higher potential state to a lower potential state, just as in the case of the water discussed above. The majority of the molecules move from higher to lower concentration, although there will be some that move from low to high. The overall (or net) movement is thus from high to low concentration. Eventually, if no energy is input into the system the molecules will reach a state of equilibrium where they will be distributed equally throughout the system. The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails. These phospholipids are aligned tail to tail so the nonpolar areas form a hydrophobic region between the hydrophilic heads on the inner and outer surfaces of the membrane. This layering is termed a bilayer since an electron microscopic technique known as freeze-fracturing is able to split the bilayer.