必修unit词汇自选练习 9 . 保 护 野 生 动 植 物 WildlifeProtection Dinosaursdiedoutbecauseofanunexpectedincident.Butwildlifetodaydisappearsorisindangerjustbecausehumansdoharmtoit.Forexample,tigersarehuntedforfurtomakecarpetssothattheycanonlyliveinsecurereserves;grasslandisdestroyedwithoutmercysothatduststormscomeintobeingaffectingdistantcities. Lastyear,scientistssawsomemonkeysrubbingthemselveswithacertainkindofinsectstoprotectthemselvesfromfiercemosquitoesbiting.Accordingtotheresultoftheinspectio
