小孩读书年龄规定2017:What kind of dog never bites?什么意思?

what kind of dog has no tail What kind of dog doesn't bite or bark? What kind of dog is always bitten but never barks? What kind of dog can jump higher than a building? What kind of dog never bites?什么意思? what kind of 与which kind of 有何区别 What letter is a kind of drink? what letter is a kind of drink A cabbie drives what kind of vehicle? What kind of MP3 should I buy