劍橋雅思5 Test 3閱讀Passage 2答案解析Disappearing Delta
2023-06-18 13:46:37 來源:中國教育在線
劍橋雅思5 Test 3閱讀Passage 2答案解析Disappearing Delta,今天中國教育在線就來為大家分析這個問題。
Disappearing Delta
消失的三角洲
劍橋雅思5 Test 3 Passage 2閱讀答案解析
第14題答案:iv
對應(yīng)原文:B部分:Up to now,people have blamed this loss of delta land on the two large dams at Aswan in the south of Egypt,which hold back virtually all of the sediment that used to flow down the river.
解析:B部分主要說明了修建大壩阻攔了沉積物,使它們無法流向河流。即打斷了原有的自然生態(tài)。與iv的interrupting a natural process對應(yīng),因此確定答案。
第15題答案:i
對應(yīng)原文:D部分:The water in the irrigation canals is still or very slow-moving and thus cannot carry sediment…So very little of it actually reaches the coastline to replace what is being washed away by the Mediterranean currents.
解析:這部分主要介紹了灌溉渠中水流速度較慢,無法攜帶沉積物,導(dǎo)致海岸流失的水土得不到補充。對應(yīng)i選項的effects of irrigation on sedimentation,由此確定答案。
第16題答案:v
對應(yīng)原文:E部分:The farms on the delta plains and fishing and aquaculture in the lagoons account for much of Egypt’s food supply…These poisons can easily enter the food chain,affecting the productivity of fishing and farming.
解析:E部分先說了該地區(qū)是埃及的糧食主產(chǎn)區(qū),又說它受到各種各樣的污染,會影響糧食和魚類產(chǎn)量,對應(yīng)v選項中的The threat to food production,尤其是food production,因此確定答案。
第17題答案:viii
對應(yīng)原文:F部分:but principally because they fear the impact this situation could have on the whole Mediterranean coastal ecosystem…h(huán)owever,that in the long term
解析:F部分說人們主要擔(dān)心的還是對地中海整體生態(tài)系統(tǒng)的影響,而且后面還提到了長期來看這一內(nèi)容。分別對應(yīng)viii選項中的long-term和impact,由此確定答案。
第18題答案:YES
對應(yīng)原文:A部分:In the past,land scoured away from the coastline by the currents of the Mediterranean Sea used to be replaced by sediment brought down to the delta by the River Nile,but this is no longer happening.
解析:文中提到,過去埃及的地中海沿岸就會受到水流侵蝕,只不過這時候有尼羅河帶來的沉積物補充而已。而題干中沒有提到補充的事情,只說大壩修建前會受到侵蝕。這一陳述完全符合原文意思,因此判斷為YES
第19題答案:NOT GIVEN
對應(yīng)原文:B部分:people have blamed this loss of delta land on the two large dams at Aswan in the south of Egypt
解析:文中確實提到人們將三角洲的土壤流失歸咎于阿斯旺大壩,但這一觀點在大壩修建前有沒有表示過則完全沒有提到。因此判斷為NOT GIVEN
第20題答案:NO
對應(yīng)原文:B部分:But when the Aswan dams were constructed…most of the sediment with its natural fertilizer accumulated up above the dam in the southern
解析:文中列舉了很多大壩的目的,如果僅僅根據(jù)這些目的的話我們只能判斷這道題為NOT GIVEN,因為文章來自 雅思不知道增加土壤肥沃程度究竟是存在但沒提,還是根本就不存在。判斷該陳述為NO的原因主要是后面半句,即它將自然肥料都堆積在了上游,這與增加土壤肥力完全相反,因此判斷為NO
第21題答案:YES
對應(yīng)原文:C部分:noticed that water samples taken in Cairo,just before the river enters the delta,indicated that the river sometimes carries more than 850 grams of sediment per cubic metre of water…There is still a lot of sediment coming into the delta
解析:文章C部分的前半段提到了水流中沉積物的含量,但該數(shù)字究竟是高是低卻完全沒有明說。隔了幾句之后才有提到仍然有大量的沉積物到來。對應(yīng)題干中的relatively high。因此確定答案為YES
第22題答案:NOT GIVEN
對應(yīng)原文:無
解析:與灌溉用水相關(guān)的內(nèi)容主要出現(xiàn)在D部分。但這部分主要說的是灌溉用水水流較慢,無法攜帶沉積物。對于是否會引發(fā)洪水則沒有提及。因此判斷為NOT GIVEN
第23題答案:YES
對應(yīng)原文:D部分:The sediment sinks to the bottom of the canals…pumped with the water into the four large freshwater lagoons
解析:這道題比較簡單,題干與原文幾乎都沒有變換,很容易確定為YES
第24題答案:F
對應(yīng)原文:E部分:Pollutants are building up faster and faster
解析:根據(jù)題干上的in addition to the problems of coastal erosion和我們之前所做的段落標題匹配,確定答案應(yīng)該在E段和F段之中,又因為這里說的是問題而非解決方案,排除F段。發(fā)現(xiàn)E段中的building up與題干中的increase對應(yīng),由此確定答案為pollutants
第25題答案:A
對應(yīng)原文:F部分:In the immediate future,Stanley believes that one solution would be to make artificial floods to flush out the delta waterways
解析:根據(jù)題干中in the short term與原文中in the immediate future的對應(yīng)定位到這個句子,然后即可很輕易的確定答案為A選項artifical floods
第26題答案:B
對應(yīng)原文:F段:in the long term an alternative process such as desalination may have to be used to increase the amount of water available
解析:根據(jù)In the long term定位到這句話。題干中的through在這里表示通過什么方式的意思,因此確定答案為desalination
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