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全国©0所名校高三单元测试示范卷学记the water,where they become attached to the bodies of passing fish.There,the larvae develop intoyoung mussels,at which point they drop off and settle on the riverbed.In many cases,the larvaewill only survive on certain types of fish and this is particularly true of Unio crassus larvae.eWith this challenge to survival in mind,the scientists guessed that the water-squirting behaviorrgula%is intended to attract appropriate fish-such as minnows and chub-and to deliver the larvae tothem.Sure enough,when water-squirts collected from multiple mussels were analyzed,they wereall found to contain viable(能存活的)mussel larvae.."Who'd have thought that a mussel,which doesn't even have a head or a brain,knows how todecisiomove to the river's edge and squirt jets of water back into the river during springtime?"saidSwitchAldridge."It's amazing."The unique behavior may also be at least part of the reason why Unio crassus is an'endangered species.decisioBy moving to the river's edge,female mussels are more easily hurt by predators from land such as mink,other dand they may be threatened by flooding or destruction of the shoreline.A32.Why do female Unio crassus mussels squirt water?3A.To attract mates.CB.To feed their larvae.DC.To scare away predators.ED.To attract appropriate fish and deliver larvae to them.33.How did the researchers conduct the study?FA.By collecting previous data.B.By watching documentaries.GC.By observing on spot.D.By analysing reports.待34.Which factor might contribute to Unio crassus mussels'being an endangered species?三部A.Squirting water from the bank of the river.第一节B.Competition with other mussels.C.Water pollution.悦D.Overfishing.I35.Which of the following can be the most suitable title for the text?GA.The role of fish in mussel reproductionchickeB.The dangers faced by endangered musselsC.The unique behaviors of mussels and molluskshis claD.The survival secret of water-squirting musselsM【答案与解析】周)an英国剑桥大学科学家研究波兰河流中的Unio crassus贻贝,揭示雌性贻贝在春季向河中喷射水流的独特行为,该over.行为的目的是吸引合适的鱼类,将贻贝幼虫传递给它们,从而提高幼虫的生存概率。32D根据第4段第1句可知,雌性Ui0 crassus贻贝喷射水流的行为旨在吸引适当的鱼类,并将幼虫传递给它们。“I3.C根据第2段第1句及第3段第1,2句可知,研究人员在现场观察雌性Uni0 crassus贻贝的喷水行为。couple34A根指最后-段可知,Uni0 crassus贻贝游到河岸边喷水更容易受到捕食者的伤害;也可能受到洪水等的威胁。Cashto35,D科学家揭示Unio crassus贻贝的生存秘密。文章主要介绍了科学家对Uni0 crassus贻贝喷水行为的观察和研究,以及这种行为如何帮助其幼虫存活。因此,D项最能概括文章的主题。第二节(共5小题;每小题2.5分,满分12.5分)were阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。and theFmhemmkcayreacedwthoutrem of hoes Whenthere are too many options,we tend to feel overwhelmed,anxious,stressed or out of sorts.This isCashtodecision fatigue a state of mental overload that can block our ability to make decisions.36:You either208stop making decisions completely,or you'll make impulsive choices.G54【24G3DY(新高考)英语-R-必考-N】1o1a speciahonor
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