最新人教版选修八Unit 3 Inventors and inventions reading课时作业 3精编版Word文件下载.docx

最新人教版选修八Unit 3 Inventors and inventions reading课时作业 3精编版Word文件下载.docx

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MrStapletonsayssafetywasthecompany’smainconcern.Hesaysthedesignerssolvedthesafetyissuebyusingoverlappingrotors（交叠式旋翼）topowerthevehicle.

Thecompanyistestingafull-sizeprototypeoftheHoverbike，whichwillmostlikelybeusedfirstbythepoliceandemergencyrescueteams.

InNewZealand，theMartinAircraftCompanyisalsotestingafull-sizeprototypeofitspersonalflyingdevice，calledJetpack（喷气背包）.Itcanflyformorethan30minutes，upto1,000metershighandreachaspeedof74kilometersperhour.

PeterCokeristheCEOofMartinAircraftCompany.HesaidJetpack“isbuiltaroundsafetyfromthestart”.Inhiswords，“reliabilityisthemostimportantelementofit.Wehavesafetybuiltintotheactualstructureitself，verysimilartoaFormulaOneracingcar.”

Jetpackusesagasoline-poweredenginethatproducestwopowerfuljetstreams.MrCokersaysitalsohasaparachute（降落伞）thatcanbeusedshouldtherebeanemergency.“Itstartstoworkatverylowaltitudeandactuallysavesboththeaircraftandthepilot，”headds.MrCokersaysJetpackwillbereadyforsalesoon.

语篇解读　本文为一篇说明文。

飞行器能够像骑自行车一样飞来飞去一直是许多发明家长期以来的梦想，文中介绍了两家研发飞行器的公司的最新产品，他们有可能促使这个梦想成为现实。

1.WecanlearnfromthepassagethattheHoverbike.

A.canhardlygetinandoutofsmallspacesquickly

B.canflyforover30minutes，upto1,000metershigh

C.hasbeenusedbythepoliceandemergencyrescueteams

D.canbetransportedquicklyafterbeingfoldedandpacked

答案　D

解析　细节理解题。

根据第二段中的“theHoverbikeisabletogetinandoutofsmallspacesveryquickly.‘Itcanbemovedacrosscontinentsveryquicklybecauseitcanbefoldedandpacked’”可知，Hoverbike能够很快地进出小空间。

它可以快速地跨洲移动，因为它可以折叠和包装。

分析选项可知，D项正确。

2.ThewriterusestheexampleofFormulaOneracingcartoshowthat.

A.Jetpackisverysafeandreliable

B.Jetpack’sengineispowerful

C.Jetpack’sactualstructureisunique

D.Jetpackcanreachagreatspeedandheight

答案　A

解析　推理判断题。

根据第六段中的“...reliabilityisthemostimportantelementofit.Wehavesafetybuiltintotheactualstructureitself...”可知，安全性、可靠性是最重要的考虑因素，故选A项。

3.Theunderlinedword“it”inthelastparagraphrefersto“”.

A.thejetstreamB.theengine

C.JetpackD.theparachute

解析　代词指代题。

根据最后一段中的“MrCokersaysitalsohasaparachute（降落伞）thatcanbeusedshouldtherebeanemergency.‘Itstartstoworkatverylowaltitude...’”可知，由此可知it指的是parachute（降落伞）。

故选D项。

4.Whatistheauthor’smainpurposeofwritingthepassage?

A.Todescribetheproblemsofinventingflyingvehicles.

B.Tointroducethelatestdevelopmentofflyingvehicles.

C.Toshowthedifferencesbetweenthetwopersonalflyingvehicles.

D.Toadvertisethetwopersonalflyingvehicles.

答案　B

解析　写作意图题。

根据第一段可知，许多人一直梦想能像骑自行车一样飞来飞去，科技的发展让这个梦想有可能很快实现。

然而飞行自行车的安全性和强度一直是个大问题。

接着下文叙述了两家研发飞行器的公司的最新产品，新产品把安全放在首位。

分析选项，可知B项（介绍飞行器的最新发展）符合文意。

故选B。

Ⅱ.完形填空

（2018·

广东一模）

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