【麻烦老师解答：阅读理解.阅读理解.Inyourschoolbags,youmayhaveapencil,somekindsofpens,aruler,andsomebooks.Noneofthesethingsgrowinthefields.Theywereallmadeinfactories.And,ofcourse,theywereinventedby】

　　麻烦老师解答：阅读理解.

　　阅读理解. Inyourschoolbags,youmayhaveapencil,somekindsofpens,aruler,andsomebooks.Noneof

　　thesethingsgrowinthefields.Theywereallmade in factories.And,ofcourse,theywereinventedby

　　somepeople.Therehavenotalwaysbeenpencilsorpens,a rulerandbooks.Thousandsofyearsago

　　nooneknewaboutthesethings.

　　Whoinventedthemfirst?Howdidtheyhavesuchcleverideas?Wealwaysdon'tknow.Therehave

　　beenmanythousandsofinventions,largeandsmall,inthehumanhistory.Someoftheseinventionshave

　　changedtheworld.Suchaspaper,printing,radio,telephoneandcomputer,andweknowtheinventors.

　　Butwehaveforgottenmostoftheotherinventors.

　　Whoinventedtheclock,forexample, or thelocktothe door? Wedon'tknow.Therehavebeen

　　thousandsofinventorsandweshouldgrateful (感激的) to them fortheircleverideas.Willyoubeone

　　ofthemwhenyougrowup?1.Mostthingsinyourschoolbagsaremadeof_________.A.paper

　　B.wood

　　C.metal

　　D.nylon2.Theinventorsinventedthesethingsbecause_________. A.theirchildrenwereatschool

　　B.theyhopedtosavesomemoney

　　C.theyhavealotofcleverideas

　　D.theyhavegoodmachines 3.Thehistorybookstellus_________.

　　A.whoinventedpaperandprinting

　　B.whoinventedclocksanddoors

　　C.whenthefirstkeywasinvented &n