必修⑤Unit13People[高考对接题]Ⅰ
语法填空Scientistshave1studyingthecomplexnatureoflightforthousandsofyears
2wasonlythiscentury,however,thattheyunlockedthesecretsofthismysteriousforce
Nowthatlightismorefully3(understand),researchersaresearchingforwaystoputthispower4work
Themostsignificantinventiontocomeoutofthisresearchis,nodoubt,thelaser
5thelaserwasinventedonlytwentyyearsago,itsapplicationsarecontinuallygrowing,innumberas6asinimportance
Todayonecanfindlaserinhospitals,factoriesand7inthegrocerystores
Theyaretheheartofnewweaponsystemsandtheymightbethekey8anewenergysupply
Eyedoctorsare9importantuseofnewlasertechnology
Ifdiseasedtissueisfound,a10(power)lasercanbeusedtoburnitaway
语篇解读:该文章主要是介绍激光的发明和应用
解析:havebeenstudying一直在研究该结构是现在完成进行时
答案:been2
解析:Itbe
答案:It3
解析:考查的是过去式
答案:understood4