每天一笑：牛吃草

英语自学网

　　牛吃草
        　　Artist:"that,sir,is a cow grazing."
        　　Visitor:"where is the grass?"
        　　Artist:"the cow has eaten it."
        　　Visitor:"but where is the cow?"
        　　Artist:"you don't suppose she'd be fool enough to stay there after she'd eaten all the grass,do you?"