★沈阳四六级模拟试题.doc

沈阳四六级模拟试题Part Two Proof-reading ExercisesPassage 34 The concern of some environmental scientiststhat the increasing level of carbon dioxide in theearths atmosphere will raise global temperaturesuntil the mid-latitudinal regions become steamingjungles are open to question. Contending scientists 1_are correct that the concentrating of carbon 2_dioxide, due to automobile exhaust, for example,is increasing. Through the absorption and re-radiation of infrared radiation, carbon dioxide doeswarmer the atmosphere. Unfortunately, indirect 3_effects that these scientists have not consideredmay occur. If global temperature increased as aresult of high carbon dioxide levels, evaporation of 4_water from the lakes and oceans will also occur. 5_Upon reaching the lower limit of condensation,cumulonimbus clouds would form. Water vapor istransparent to visible wavelengths of theelectromagnetical spectrum; however, Lamb 6_estimates that cumulonimbus clouds scatterseventy percent of the earth incident solar 7_radiation. With a reduction of solar radiationreaching the earths surface, cooling would occur,first on land, second in the atmosphere. Other 8 _indirect effect of higher global temperatures thatsome environmental scientists have considered is 9 _that a great amount of heat would be absorbedfrom the atmosphere prior to the melting of polarice packs and continental glaciers. The amount ofheat energy that ice would absorb prior to meltingis known as “the heat of fusion.” The atmospherewould lose a significant great amount of heat 10_energy in the process of melting the worldsnatural ice reserves.Passage 35 Before investing in common stocks, oneshould be aware of both their advantages anddisadvantages. One advantage is their highpotential return on the original amount invested. Ahigh average annual percent of return and large 1_capital gains over a period of years are notunusual. However, since the average price of all 2_stocks sold on the major stock exchanges can beexpected to rise more than the average price ofconsumer goods over an extensive period of time, 3_common stocks offer an attractive hedge againstlong-term inflation. Finally, there are taxadvantages to invest in common stocks. The 4_income on the capital gain of a common stock heldfor more than a year is taxed at a much lower ratethan ordinary income. The big disadvantage of 5_common stocks is the great risk of price declinethat must be accepted in return for the chance torealize large gains. Both individual stocks and the 6_market in general are prone to sudden and steepprice declines. These are difficult for the smallinvestor to anticipate. Another disadvantage isduring periods of high inflation the attractiveness 7_of other forms of investment, such as timedeposits, mortgages, and bonds, reduce buyer 8_interest in common stocks, resulting in pricedeclines. Thus, during these times the value ofcommon stocks as fl hedge against inflation isdiminished. Often, too, the current rate of returnon common stocks is much lower than the returnon the other less risky forms of investment. In 9_such a case current income is scarified for thehope of long-term capital gains. One otheradvantage of common stocks that must not be 10_overlooked is the necessity of paying closeattention to the stocks or of hiring a professionalstockbroker. Although these disadvantages cannotbe ignored, they should not blind investors to theadvantages of carefully chosen common stocks.Passage 36 The Seattle Times Company is one newspaperfirm that has recognized the need for change anddone something about it. In the newspaperindustry, papers must reflect the diversity of thecommunities to which they provide information. It 1_must reflect that diversity with their news coverageor risk losing their readers interest and theiradvertisers support. Operating within Seattle,which has 20 percents racial minorities, the paper 2_has put into place policies and procedures for hiringand maintain fl diverse work force. The underlying 3_reason for the change is that for information to befair, appropriate, and subjective, it should be 4_reported by the same kind of population thatreads it. A diversity committee composed of reporters,editors, and photographers meets regularly to 5_value the Seattle Times content and to educate therest of the newsroom staff about diversity issues.In an addition, the paper instituted a content audit 6_that evaluates the frequency and manner ofrepresentation of woman and people of color in 7_photographs. Early audits showed that minoritieswere pictured far too infrequently and werepictured with fl disproportionate number ofnegative articles. The audit results from 8_improvement in the frequency of majority 9_representation and their portrayal in neutral orpositive situations. And, with a result, the Seattle 10_Times has improved as a newspaper. The diversitytraining and content audits helped the SeattleTimes Company to win the Personnel JournalOptimal Award for excellence in managing change.Passage 37 As I approached the planet, my thermo-analyticdetectors told me that there was a great variety ofplant lire, and no animal life at a11. In my three 1_hundred years of space exploration, I had neverbefore come across a world where there were noanimals. It was so strange that I wondered about 2_whether something had happened-some war ornatural disaster which had killed off all animal lifeon the planet I made my first landing on soft soil near a 3_group of red rocks. As soon as I had tested theatmosphere, I stepped out and began to lookround. In front of me there were large plants, onwhich grew a kind of fruit like none that I had everseen before. On my left, not far away, the groundraised gently to some low hills. On my right and 4_behind I the ground was leveled, stretching away 5_into the distance. It was an impressive butmonotonous landscape After I had rested and write my report I flew 6_to another part of the planet. Detecting a highlevel 0f radioactivity, I did not land; but I flewover the area several times. It was a place of deepvalleys with vertical walls; in them regular squares 7_or rectangular openings had been made, whosepurpose I was not able to guess. There was littlevegetation