Unit 4 Amazing Science Topic 1仁爱版九年级上册课时优化训练（含解析）

Unit4AmazingScience1.Whenwasitinvented?一九年级英语仁爱版上册课时优化训练1.AfterthreespiritsvisitedSA.madetoB.wasmadetoC.wasm—Believeinyourselfandsticktowhatyou'redoingA.problemB.pleasureC.methodD.chanceA.tastingB.smellingC.touchingD.watching4.NotonlyLinTaobutalsoWangHaibA.praisedB.arepraisedC.ispraisedD.waspraisedA.knowledgeB.inventionC.courageD.imagination6.Wecanovercomeanydifficulties7.—Howdidancientpeoplefindoutwheret—StarstheguidingmarA.areusedbyB.wereusedasC.usedas8.—Howdoyoutheideaofyourinvention?A.comeaboutB.cometoC.9.—Whydidn'tyouplaybasketballwithusyesterdayafternoon?A.didn'tallowtocomeoutA.invention;inventor;invB.inventor;invention;D.inventing;invented;iBecauseofalackoftrainedlifeguardstowatchoverswiGermanyhasdevelopedanunderwaterrobottohelplifeguardsinrescuing(救援)swimmersinAccordingtoscientists,therearesometypicalposturesthaopenwater.Ifswimmers'movementsareconsistentwithdrowning(溺亡),theinformationoftheistestedatlakesandotheroutdoorsettings,drones(无人机)tofthemonitoringcameras.Fvehiclemustbeequippedwithacousticsensors(声音传感器).Soundwaveechoescanbeusedeterminepeople'spositionsandpickthemup.Whentherobotisinformedofanemergency(紧急情况),asignalwillwarn“Thecurrentsystemis90centimeterslong,50centimetershigh,and50centimeterswilookslikeanunderwatinnovation(创新)ofthesystemisthesidefoldingwingsthatfixlifelesspeopleonastretcherwithoutkilosofbuoyancy(浮力).12.Theexpression"bereleased"inParagraph2probablymeans"”A.besentoutB.becontr13.Whichofthefollowingwouldbethebesttitleforthepassage?A.ARobottoBuildDamWaC.ARobottoProtectLifeguardsD一、单选题解析：此比题考查makesb.dosth.的被动语态bemadetodosth.由句意，空处表“被迫意识到”用bemadetorealize。只有B合题意。成功的方法是什么?故选C。解析：A.tasting品尝；B.smelling闻；C.touching触摸；D.watching观看。根据语境可知狗可以通过闻我们的呼吸和汗水来了解人类的感受。故选B。解析：notonly……butalso的谓语要与butalso后面的人称一致，且后面的句子是过去时态，前面也要用过去时态。因为他们是"被老师表扬",要用被动语态。yourmind"可知，在脑海里画画要运用想象。故选D。解析：beusedas意为"被用作";beusedby意为"被某人用"。解析：cometo意为"想起";comeabout意为"产生";comeup意为"走向";comeout意为"出解析：问句里含有过去时态，答语也要用相应的时态。故B、D排除。我是"没有被允许"。故解析：细节理解题。根据ateamofscientistsfromGermanyhasdevelopedanunderwaterrobottohelplifeguardsinrescuing(救援)swimmersinemergencies.(来自德国的一个科学家团队开发了一种水下机器人，以帮助救生员在紧急情况下营救游泳者。)可知是为了帮助救生员在紧急情况下营救游泳者。故选A。解析：词义理解题。根据Ifswimmers'movementsareconsistentwithdrowning(溺亡),thefloor,anditwillbereleasedbyasignal