[解析]
(1)A.细节理解题.从第二段小男孩给爷爷所说的What good does reading the book do?读书到底能给带来什么好处?故选A.
(2)D.推理判断题.从最后一段"Grandson,that's what happens when you read the book.You might not understand or remember everything,but when you read it,you'll be changed,inside and out."竹篮打水就像读书一样,当读的时候可能记不住里面的内容,但是他从内到外一直都在改变着你,得知他爷爷让他打水是想让他意识到读书的好处.故选D.
(3)C.细节理解题.根据最后一段You might not understand or remember everything,but when you read it,you'll be changed,inside and out.当读书的时候你从内到外都在变化,故选C.
(4)C.推理判断题.根据最后一段You might not understand or remember everything,but when you read it,you'll be changed,inside and out可知最佳标题为阅读是为了彻底改变自己;故选C.