2022雅思考试考前冲刺卷.docx
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1、2022雅思考试考前冲刺卷本卷共分为1大题50小题,作答时间为180分钟,总分100分,60分及格。一、单项选择题(共50题,每题2分。每题的备选项中,只有一个最符合题意) 1.At yesterdays party, Elizabeths boyfriend amused us by_ Charlie Chaplin.A:copyingB:followingC:imitatingD:modeling2.She keeps a supply of candles in the house in case of power_A:failureB:lackC:absenceD:drop3.The
2、lecture which lasted about three hours was so_ that the audience couldnt help yawning.A:tediousB:boredC:clumsyD:tired4.His temper and personality show that he can become a soldier of the top ?_A:circleB:rankC:categoryD:grade5.Why did a promising heart drug fail?Doomed drug highlights complications o
3、f meddling with cholesterol.A:1. The failure of a high-profile cholesterol drug has thrown a spotlight on the complicated machinery that regulates cholesterol levels. But many researchers remain confident that drugs to boost levels of good cholesterol are still one of the most promising means to com
4、bat spiralling heart disease.B:2. Drug company Pfizer announced on 2 December that it was cancelling all clinical trials of torcetrapib, a drug designed to raise heart-protective high-density lipoproteins (HDLs). In a trial of 15000 patients, a safety board found that more people died or suffered ca
5、rdiovascular problems after taking the drug plus a cholesterol-lowering statin than those in a control group who took the statin alone.C:3. The news came as a kick in the teeth to many cardiologists because earlier tests in animals and people suggested it would lower rates of cardiovascular disease.
6、 There have been no red flags to my knowledge, says John Chapman, a specialist in lipoproteins and atherosclerosis at the National Instit6.It could help rid human body of cholesterol.A:TorcetrapicB:HDLSC:StatinD:CETP7.Researchers are yet to find more about it.A:TorcetrapicB:HDLSC:StatinD:CETP8.It wa
7、s used to reduce the level of cholesterol.A:TorcetrapicB:HDLSC:StatinD:CETP9.According to Kashyap, it might lead to unwanted result if its blocked.A:TorcetrapicB:HDLSC:StatinD:CETP10.It produced contradictory results in different trials.A:TorcetrapicB:HDLSC:StatinD:CETP11.It could inhibit LDLs.A:Tor
8、cetrapicB:HDLSC:StatinD:CETP12.Dont wash those fossils!Standard museum practice can wash away DN1. Washing, brushing and varnishing fossils all standard conservation treatments used by many fossil hunters and museum curators alike vastly reduces the chances of recovering ancient DN2. Instead, excava
9、tors should be handling at least some of their bounty with gloves, and freezing samples as they are found, dirt and all, concludes a paper in the Proceedings of the National Academy of Sciences today. 3. Although many palaeontologists know anecdotally that this is the best way to up the odds of extr
10、acting good DNA, Eva-Maria Geigl of the Jacques Monod Institute in Paris, France, and her colleagues have now shown just how important conservation practices can be. This information, they say, needs to be hammered home among the people who are actually out in the field digging up bones. 4. Geigl an
11、d her colleagues looked at 3,200-year-old fossil bones belonging to a single individual of an extinct cattle species, called an aurochs. The fossilA:Warm and wet13. Geigl herself believes that, with cooperation between bench and field researchers, preserving fossils properly could open up avenues of
12、 discovery that have long been assumed closed. 14. Much human cultural development took place in temperate regions. DNA does not survive well in warm environments in the first place, and can vanish when fossils are washed and treated. For this reason, Geigl says, most ancient DNA studies have been d
13、one on permafrost samples, such as the woolly mammoth, or on remains sheltered from the elements in cold caves including cave bear and Neanderthal fossils. 15. Better conservation methods, and a focus on fresh fossils, could boost DNA extraction from more delicate specimens, says Geigl. And that cou
14、ld shed more light on the story of human evolution.Questions 8-12Do the following statements agree with the information given in the passage? Please writeTRUE if the statement agrees with the writerFALSE if the statement does not agree with the writerNOT13.Questions 13-14Complete the following the s
15、tatements by choosing letter A-D for each answer.“This information” in paragraph 3 indicates:A:A It is critical to follow proper practices in preserving ancient DNB:B The best way of getting good DNA is to handle fossils with gloves.C:C Fossil hunters should wear home-made hammers while digging up b
16、ones.D:D Many palaeontologists know how one should do in treating fossils.14.The study conducted by Geigl and her colleagues suggests:A:A the fact that ancient DNA can not be recovered from fossil bones excavated in the past.B:B the correlation between the amount of burying time and that of the reco
17、vered DNC:C the pace at which DNA degrades.D:D the correlation between conservation practices and degradation of DN15.How shops can exploit peoples herd mentality to increase salesA:1. A TRIP to the supermarket may not seem like an exercise in psychological warfarebut it is. Shopkeepers know that fi
18、lling a store with the aroma of freshly baked bread makes people feel hungry and persuades them to buy more food than they had intended. Stocking the most expensive products at eye level makes them sell faster than cheaper but less visible competitors. Now researchers are investigating how “swarm in
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