全国100所名校最新高考冲刺卷英语2023届Y1
2023-11-11 20:38:26
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河南教考英源信息网hitp:/www.henanik.com限权所有·键衣必究dengue,and as many as 25,000 die from it.Now seientists seem to have found a way to proteot humans from dengue by first proteetingmosquitoes.Dengue fever is caused by a virus.Though it may seem strange to think of it this way.the mosquitoes that spread the dengue virus are also infected with it.But the virus doesn't seem tohurt the mosquitoes.Wolbachia is a kind of bacteria commonly found in many inseets.In some inseets,Wolbachiacan keep some viruses from duplicating themselves,which is how viruses grow inside a body.Wolbachia isn't naturally found in mosquitoes.But by infeeting these mosquitoes with Wolbaehia,scientists can keep the mosquitoes from catching the dengue virus.Even better,the youngmosquitoes coming from the eggs of the infected mosquitoes also earry Wolbachia.Researchers working with the World Mosquito Program (WMP)ran a 27-month study inYogyakarta,Indonesia.They split a 10-square-mile area up into 24 smaller areas.In half of theareas,the scientists did nothing.In the other half,they set out containers of eggs from mosquitoesthat had Wolbachia.They did this every two weeks for just 4 to 6 months.Ten months later,80%of the mosquitoes in the treated areas earried Wolbachia.Theresearchers report the number of dengue cases in the treated areas was reduced by 77%and that thenumber of people needing hospital care for dengue dropped by 86%Because the results of the experiment were so good,the WMP has placed Wolbachia-infectedmosquito eggs in all parts of Yogyakarta and surrounding areas.The WMP says that within a year,their efforts will protect 2.5 million people against dengue and that their efforts will be tumed intoaprogram that can be repeated worldwide.28.What kind of disease is dengue?A.It is likely to cause death.B.It causes no pain but fevers.C.It happens less often in hot areas.D.It hurts both people and mosquitoes.29.The underlined word"duplicating"in paragraph 3 most probably means"A.worsening the harm ofB.expanding the size ofC.increasing forces ofD.making copies of30.What can be inferred about the method from the figures listed in paragraph s?A.Its wide use.B.Its effectiveness.C.Its complexityD.Its easy operation.31.What's the WMP's attitude towards the method?A.Ambiguous.B.Positive.C.Tolerant.D.Skeptical.DIn Australia,plenty of wild things can bite or sting (you.Strangely nouhfthis a tree.Now scientists have figured out what makes the tree's sting so bad.The rainforests of eastern Australia are home to a stinging tree known as Dendroenide.Manypeople call it the gympie-gympie tree-a name given to the tree by native Australians.It's coveredwith sharp,needle-like hairs that carry poison.If you touch a gympie-gympie tree,you won'tforget it anytime soon.The pain can stay with you for hours,days or weeks.In some cases,itsbeen reported to stay for months.
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