辽宁省大连市2018_2019学年高一英语上学期期末考试试题（含解析）

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1、大连市2018～2019学年度第一学期期末考试试卷高一英语说明：1.请在答题纸上作答，在试卷上作答无效。2.本试卷共120分，考试时间100分钟。选择题部分第一部分阅读理解(共两节，满分35分)第一节(共10小题；每小题2.5分，满分25分)阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项，并在答题纸上将该项涂黑。AEasyfloatingIfyouhaveeverbeenswimmingintheocean,youmayhavenoticedthatseawateriseasiertofloatinthanpoolwater.Here’swhy:Yo

2、u’llneedTwoclearbowlsFoodcoloringSpoonSaltTwoeggs1.Fillbowlshalfwaywithwater.2.Add10tablespoonsofsalttoonebowl,mixuntilitdissolves,andthenaddseveraldropsofcolor.3.Carefullyputaneggintoeachbowlofwater,andwatchwhathappens.Whathappens?Theeggintheplainwatersinks.Theegginthesaltwaterfloats.(

3、Ifthesaltwatereggdoesnotfloatwell,mixmoresaltintothebowl.)Thewaterandsaltparticles(粒子)inthesaltwaterbowlareclosertogetherthanplainwaterparticlesare.Theypressharderagainsttheeggthantheplainwaterparticlesdoandtheeggfloats.1.Thepurposeoftheexperimentistoexplain________.A.whytheeggfloatsint

4、hesaltwaterB.whypeoplefloatmoreeasilyintheseaC.howwecanmaketheeggfloatinwaterD.howthewaterandsaltparticlesacttogether2.Accordingtothetext,iftheegginthesaltwaterdoesn’tfloat,whichisthereason?A.Thewateristoohot.B.Theeggisnotfresh.C.Thebowlistoosmall.D.Thesaltisnotenough.3.Whydoestheeggflo

5、atinthesaltwaterinsteadofintheplainwater?A.Theegggetsmorepressure.B.Thesaltparticlespressharder.C.Thewaterparticlesarecloser.D.Thefoodcoloringgivesaforce.【答案】1.B2.D3.A【解析】这是一篇科普类阅读。文章通过做实验的方法，解释了为什么人们更容易漂浮在海水里。【1题详解】细节理解题。答案定位在第一段Ifyouhaveeverbeenswimmingintheocean,youmayhavenoticedthat

6、seawateriseasiertofloatinthanpoolwater.可知这个实验的目的是解释为什么人们更容易漂浮在海里，故选B。【2题详解】推理判断题。根据Ifthesaltwatereggdoesnotfloatwell,mixmoresaltintothebowl.（如果盐水里的鸡蛋不能很好地漂浮，在碗里加入更多的盐。）由此可知如果鸡蛋在盐水中不漂浮，是因为盐不够，故选D。【3题详解】推理判断题。答案定位在最后一段Theypressharderagainsttheeggthantheplainwaterparticlesdoandtheeggfloats

7、.（它们比普通的水粒子对鸡蛋的压力更大，鸡蛋就会漂浮起来。）由此推断出鸡蛋浮在盐水里而不是在白水里，是因为鸡蛋得到更多的压力，故选A。BSpanishartistPabloPicasso(1881—1973)isoneofthegreatestartistsofthe20thcentury.Itissaidthateverythinghisbrushtouchedturnedtogold.Butintruth,thevalueofhisworkcouldbeworthmorethananypreciousmetal.Picassocreatedmor