单选题Serial murderers rarely deviate from a certain type of Uprey/U.

单选题At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it has become to work out international agreements relating to the environment because of economic concerns unique to each country. It is no longer enough to try to forbid certain activities or to reduce emissions of certain substances. The global challenges of the interlink between the environment and development increasingly bring us to the core of the economic life of states. During the late 1980s we were able, through international agreements, to make deep cuts in emissions harmful to the ozone layer. These reductions were made possible because substitutions had been found for many of the harmful chemicals and, more important, because the harmful substances could be replaced without negative effects on employment and the economies of states. Although the threat of global warming has been known to the world for decades and all countries and leaders agree that we need to deal with the problem, we also know that the effects of measures, especially harsh measures taken in some countries, would be nullified (抵消) if other countries do not control their emissions. Whereas the UN team on climate change has found that the emissions of carbon dioxide would have to be cut globally by 60% to stabilize the content of CO2 in the atmosphere, this path is not feasible for several reasons. Such deep cuts would cause a breakdown of the world economy. Important and populous (人口众多的) low-income or medium-income countries are not yet willing to undertake legal commitments about their energy uses. In addition, the state of world technology would not yet permit us to make such a big leap. We must, however, find a solution to the threat of global warming early in the 21st century. Such a commitment would require a degree of shared vision and common responsibilities new to humanity. Success lies in the force of imagination, in imagining what would happen if we fail to act. Although many living in cold regions would welcome the global-warming effect of a warmer summer, few would cheer the arrival of the subsequent tropical disease, especially where had been none.

单选题Editors do think explicitly about timing and they are not motivated merely to be the first to print an exciting news story: they keep stories until the time is______

单选题Ms. Breen has been living in town for only one year, yet she seems to be ______ with everyone who comes to the store.

单选题They made detailed investigations to ______ themselves with the needs of the rural market.(2010年北京航空航天大学考博试题)

单选题We______our voice depending on the circumstances, particularly in relationship to background noise.

单选题The small country ______ itself with the stronger power for protection.

单选题5 Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available for excavating and even less is available for publishing the results and preserving the sites once excavated. Yet archaeologists deal with priceless objects every day. Second, there is the problem of illegal excavation, resulting in museumquality pieces being sold to the highest bidder. I would like to make an outrageous suggestion that would at one stroke provide funds for archaeology and reduce the amount of illegal digging. I would propose that scientific archaeological expeditions and governmental authorities sell excavated artifacts on the open market. Such sales would provide substantial funds for the excavation and preservation of archaeological sites and the publication of results. At the same time, they would break the illegal excavator's grip on the market, thereby decreasing the inducement to engage in illegal activities. You might object that professionals excavate to acquire knowledge, not money. Moreover, ancient artifacts are part of our global cultural heritage, which should be available for all to appreciate, not sold to the highest bidder. I agree. Sell nothing that has unique artistic merit or scientific value. But, you might reply, everything that comes out of the ground has scientific value. Here we part company. Theoretically, you may be correct in claming that every artifact has potential scientific value. Practically, you are wrong. I refer to the thousand pottery vessels and ancient lamps that are essentially duplicates of one another. In one small excavation in Cyprus, archaeologists recently uncovered 2,000 virtually indistinguishable small jugs in a single courtyard. Even precious royal seal impres- sions known as I'melekh handles have been found in abundance-more than 4,000 examples so far. The basements of museums are simply not large enough to store the artifacts that are likely to be discovered in the future. There is not enough money even to catalogue the finds; as a result, they cannot be found again and become as inaccessible as if they had never been discovered. Indeed, with the help of a computer, sold artifacts could be more accessible than are the pieces stored in bulging museum basements. Prior to sale, each could be photographed and the list of the purchasers could be maintained on the computer. A purchaser could even be required to agree to return the piece if it should become needed for scientific purposes.

单选题Questions 27—30 are based on a dialogue about intermarriage. You now have 20 seconds to read Questions 27—30.

单选题The young girl showed wonderful facility for learning languages.

单选题You may make good grades by studying only before examinations, but you will succeed eventually only by studying hard every day. A. in due course B. in the long run C. in the main D. in the first place

单选题He expected to lose his job because the boss Uhad had it in for him/U a long time.

单选题You should get rid of some of your ______ fat by taking more exercise.

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单选题Surely it should be obvious the dimmest executive that trust , that most valuable of economic assets, is easily destroyed and hugely expensive to restore—and that few things are more likely to destroy trust than a company letting sensitive personal data getting into the wrong hands . A. that trust B. is easily destroyed c. few things D. getting into the wrong bank

单选题The rebel army is attempting to ______ the government.

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