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1、Unit 5 The power of nature .阅读理解A2018长沙一模Evidence of violent storms that destroyed a lost town known as Britains Atlantis has been uncovered. The finds were uncovered off the coast of Dunwich, Suffolka small village which in the 11th century was one of the largest towns in England.The town was hit b
2、y a series of storms in the 13th and 14th centuries and is now largely below the sea.Researchers said sediment (沉积物) gathered from the cliffs independently proved the historical record.“They were like the south coast storms of 2013, at least once a year for decades，” Professor David Sear, of the Uni
3、versity of Southampton, said.The threeyear research on Dunwich has been funded by Touching the Tide, a 900,000 Heritage Lottery Fund plan to explore the changing Suffolk coast.A diver used ultrasound (超声波) to “illuminate” findings on the seabed, and the marshes (沼泽) and eroding cliffs were surveyed.
4、“It offers a marvelous history of climate change and coastal erosion，” said Prof. Sear with regard to the findings.In the 11th century, Dunwich was the 10th largest town in England, but now has about 120 residents.Two great storms in 1286 and 1326 resulted in the loss of its harbour and started its
5、decline. Prof. Sear said analysis showed how people gave up on Dunwich after 1338, when another great storm choked up the port for good, and food production declined. “Sediment gathered from the cliffs，” he said, “independently confirmed the sequences of storms recorded in the historical record.”The
6、 underwater research has been carried out using acoustic (声音的) imaging technology, and has unearthed a series of buildings. We found the ruins of about four churches and weve also found ruins of what we think was a toll house. Weve also found shipwrecks (沉船), which no ones known before.A dig in 2015
7、 discovered evidence of Dunwichs prehistoric origins, as well as evidence that it was a prosperous Saxon port, prior to its rapid growth following the Norman invasion.Bill Jenman, from Touching the Tide, said，“We found loads of pottery, a lot more than weve found before, sort of High Medievalthe pea
8、k of the wealth of Dunwich. We know it was a fairly major town in the AngloSaxon period.”篇章导读：本文是一篇说明文。文章讲述了研究人员发现了十一世纪英国最大的城镇之一Dunwich被猛烈的暴风雨摧毁的新证据。1Evidence shows that Dunwich declined in history due to_.Athe rise of sea level Bsediment from the cliffCthe Norman invasion Da series of storms答案：D细节理
9、解题。根据第二段中的“The town was hit by a series of storms in the 13th and 14th centuries and is now largely below the sea.”可知，这个小镇是被暴风雨摧毁的。2What can be learned from the text about Dunwichs present condition?AIt is completely below the sea.BIt still exists with about 120 residents.CIt is still hit by storms
10、every year.DIt is still an important port in England.答案：B细节理解题。根据第八段中的“In the 11th century, Dunwich was the 10th largest town in England, but now has about 120 residents.”可知，此地现在只有大约120名居民。故答案为B。3From the discoveries, we can conclude that _.ADunwich was thoroughly ruined by the Norman invadersBno on
11、e believed those ships could have sunk at DunwichCDunwich was a prosperous town before its declineDno historical records about Dunwich were kept after 1338答案：C推理判断题。根据倒数第二段及最后一段最后一句可推知，在衰落之前，Dunwich是一个繁荣的城镇。BWildfires and heat waves have been troubling the states of California and Arizona this year.
12、 Since 2010, about 6.4 million acres have been burned on average per year. Recent studies have stated that global warming is the cause of these wildfires and higher temperatures, and that the incidence of these natural disasters is likely to increase.As temperatures increase, wildfires become more c
13、ommon. As this cycle progresses, climate change and wildfires both increase frequently and seriously. Forest fires are also developing at higher frequencies as a result of global warming. Firefighters use techniques like backburning to help prevent further spread of these fires, but these measures a
14、re not always effective. Some factors that promote wildfires, such as drought and insect outbreaks, have been linked to global warming as well. Insects that kill trees and other plants make the remains more sensitive to fires, as the plant matter dries out and can more easily be burned. Higher tempe
15、ratures that result from climate change cause more water to evaporate (蒸发) from reservoirs and lakes, which can lead to drought.With global warming causing higher temperatures, the wildfire seasons of affected areas lengthen. This occurs because summer heat begins to build earlier in the year, and t
16、he cooling fall season is delayed. For forests in the southwest United States, the conclusion of snows melting indicates the time when fires are able to start. Climate change has caused the melting of snow to occur earlier than it did 50 years ago by about one to four weeks. The global warming trend has hit Southern California extremely hard, and the months of J
