新概念英语第三册课文和翻译

Lesson1APumaatlarge逃遁的美洲狮Pumasarelarge,cat-likeanimalswhicharefoundinAmerica.WhenreportscameintoLondonZoothatawildpumahadbeenspottedforty-fivemilessouthofLondon,theywerenottakenseriously.However,astheevidencebegantoaccumulate,expertsfromtheZoofeltobligedtoinvesti