请专业人士检查并修改以下托福作文语句,主要看有没有语法错误我要用在托福作文里的,主要检查有没有语法错误,或者怎么表达能更符合美国人的思维习惯,如果能大概评一下分就更好了（当

　　请专业人士检查并修改以下托福作文语句,主要看有没有语法错误

　　我要用在托福作文里的,主要检查有没有语法错误,或者怎么表达能更符合美国人的思维习惯,如果能大概评一下分就更好了（当然我指的是单就这些例子或句子而言）,马上要考了来不及了,

　　1.Apersoncanenlargehisorherpublicrelationscirclebymakingfriendsindifferentbackgrounds.一个人可以通过交不同背景的朋友来扩大社交圈.

　　2.Itcanbenefitindividualsbyexpandingtheirknowledgeandhorizons.

　　这能扩大一个人的知识面和视野

　　3.DaVinci,afamouspainterrememberedforthemasterpieces“MonaLisa”and“TheLastSupper”,hasmadeequallysignificantcontributionstomanyfieldssuchasarchitecture,engineering,geologyandbiology.Itisbecauseofhisprofoundknowledgeofallthesedisciplinesthathecancreatesomanygreatartworks.

　　4.Beethoven,afamousmusicianrememberedforthemasterpiece”SymphonyNo.5”,haslivedaquitehardlife.Hebegantolosehishearingatamiddleageandbecameentirelydeafatlast.However,thisobstacleneverstoppedhisstepsforward.Ifhechosetogiveupinthathardtime,thenwewillloseanoutstandingcomposertoday.Itisbecauseofhisstrongwillthathecancreatesomanygreatartworks.

　　5.Inrecentfoodmarket,anincreasingnumberoffoodproducersbegantoputharmfuladditivesintoeasy-preparedfoodsinordertoreducetheirproductioncosts.Forinstance,industrialplasticizer,sudanoneandripeningagentsallhavetriggeredanumberofcontroversies.Inthiscase,manypeoplearewillingtocookfoodbythemselvesinsteadofeatingsomefastfood.Atleast,theywashvegetablesandcutmeatbythemselves,thereforethesafetyofthesefoodmaterialscanbeguaranteedtosomeextent.

　　6.Thelove,thefriendshipandthespiritofperseveranceexpressedinthismovieindeedhasagreateducationalsignificancetothepublic.

　　7.Thegirl’sspiritofpersistenceindeedencouragedlotsofpeopletostrugglefortheirgoals.

　　8.Aneconomistneedssomemathematicalskillstoexplaineconomicphenomena;amusicianneedssomebackgroundknowledgeaboutmusichistorytounderstandthemeaningsofclassiccompositions;anarcheologistneedssomegeologicalmethodstodateancientsites.

　　9.Asahighschoolstudent,Ispend1hourpracticingtennisafterschooleveryafternoon.Atthemomenttheballhittheracket,Ifeelasifallthep