【導(dǎo)讀】Turtle['t?:tl]. T:Whatisthis?S:Thisisaturtle.n.hippo['hip?u]. Isthisahippo?yes,thisisahippo.elephant['elif?nt]. Isthisaelephant?Yes.youareright.Andwhatisthis?Thisisasnail.slow.isveryslow.thesnail.Thehippoissobig.theland.thehippo.