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1、2022年广东省梅州市大学英语6级大学英语六级知识点汇总（含答案）学校:_ 班级:_ 姓名:_ 考号:_一、2.Reading Comprehension (Skimming and Scanning)(20题)1. It found that increases in air pollution tended to _.2.Most of the people believe that social lying helps to avoid _.3.In the last-paced world, TV shows and video games may distract us from o
2、ur _.A.priorities in lifeB.study at collegeC.social activitiesD.stress and weariness4.In such episodes as the Red Baron, the show has been heavily relying on _.5. Sled dogs dont use reins, instead, they follow _.6.Merit will have to start with a more lucrative legal job instead of her favorite posit
3、iona public-interest attorney because she has to _.7.In Scotland, the two types of divorces procedure in the judicial offers court are _.8.The proper temperature for storing books is _.9.The pesticide DDT can be effective against _.A.malaria B.animals C.wildlife D.human nervous system10.The modem Ol
4、ympic Games took place at _ in 18911.There is an aging sign when feeling sad from time to time.A.Y B.N C.NG12.One thing to remember is that a varied diet that includes plenty of_is recommended for everyone, regardless of age.13.The disadvantage of todays social networks is that to the outside web, t
5、hey are not _.14.The discussion on how to motivate students suggests that the focus on _ was not always enough.15._ is the best choice for most depression sufferers.16.Climate ChangeScientists predict increasing droughts, floods and extreme weather and say there is growing evidence that human activi
6、ties are to blame.What Is Climate Change?The planets climate is constantly changing. The global average temperature is currently in the region of 15. Geological and other evidence suggests that, in the past, this average may have been as high as 27 and as low as 7.But scientists are concerned that t
7、he natural fluctuation (波动) has been overtaken by a rapid human-induced warming that has serious implications for the stability of the climate on which much life on the planet depends.What Is the Greenhouse Effect?The greenhouse effect refers to the role played by gases which effectively trap energy
8、 from the Sun in the Earths atmosphere. Without them, the planet would be too cold to sustain life as we know it.The most important of these gases in the natural greenhouse effect is water vapor, but concentrations of that are changing little and it plays almost no role in modern human-induced green
9、house warming.Other greenhouse gases include carbon dioxide, methane (甲烷) and nitrous (含氮的) oxide, which arc released by modern industry, agriculture and the burning of fossil fuels. Their concentration in the atmosphere is increasing-the concentration of carbon dioxide has risen by more than 30% si
10、nce 1800.The majority of climate scientists accept the theory that an increase in these gases will cause a rise in the Earths temperature.What Is the Evidence of Warming?Temperature records go back to the late 19th century and show that the global average temperature increased by about 0.6 in the 20
11、th century.Sea levels have risen 1020 cm-thought to be caused mainly by the expansion of warming oceans.Most glaciers in temperate regions of the world and along the Antarctic Peninsula are in retreat, and records show Arctic sea-ice has thinned by 40% in recent decades in summer and autumn.There ar
12、e anomalies (异常) however-parts of the Antarctic appear to be getting colder, and there are discrepancies between trends in surface temperatures and those in the troposphere(对流层) (the lower portion of the atmosphere).How Much Will Temperatures Rise?If nothing is done to reduce emissions, current clim
13、ate models predict a global temperature increase of 1.45.8 by 2100.Even if we cut greenhouse gas emissions dramatically now, scientists say the effects would continue because parts of the climate system, particularly large bodies of water and ice, can take hundreds of years to respond to changes in
14、temperature. It also takes greenhouse gases in the atmosphere decades to break down.It is possible that we have already irrevocably(不可撤回地) committed the Greenland ice sheet to melting, which would cause an estimated 7m rise in sea level. There are also indications that the west Antarctic ice sheet m
15、ay have begun to melt, though scientists caution further research is necessary.How Will the Weather Change?Globally, we can expect more extreme weather events, with heat waves becoming hotter and more frequent. Scientists predict more rainfall overall, but say the risk of drought in inland areas during hot summers will increase. More flooding is expected from storms and rising sea levels.There are, however, likely to be very strong regional variations in these patterns, and these are difficult to pr
