there is some water in a bottle near a *g rock.a *rd is very thirsty. he comes to the bottle and stands next to the bottle.but he can't drink the water，beacause the bottle's neck is very long. so he thinks and thinks，and then flies away. after some time，he comes[复习必备 | 海量免费学习*资源尽在“学而思轻课app”