数据库系统（databasesystems），是由数据库及其管理软件组成的系统。主要包括操作系统、各种宿主语言、实用程序以及数据库管理系统。数据库系统DBS（DataBaseSystem，简称DBS）通常由软件、数据库和数据管理员组成。其软件主要包括操作系统、各种宿主语言、实用程序以及数据库管理系统。数据库由数据库管理系统统一管理，数据的插入、修改和检索均要通过数据库管理系统进行。数据管理员负责创建、监控和维护整个数据库，使数据能被任何有权使用的人有效使用。数据库管理员一般是由业务水平较高、资历较深的人员担任。
nd lay around it every day. He climbed to the tree top, ate the apples, took a nap under the shadow... He loved the tree and the tree loved to play with him. 很久很久以前,有一棵又高又大的苹果树.一位小男孩,天天到树下来,他爬上去摘苹果吃,在树荫下睡觉.他爱苹果树,苹果树也爱和他一起玩耍. Time went by... the little boy had grown up and he no longer played around the tree every day. One day, the boy came back to the tree and he looked sad. “Come and play with me,” the tree asked the boy. “I am no longer a kid, I don’t play around trees anymore.” The boy replied, “I want toys. I need money to buy them.”“Sorry, but I don’t have money...but you can pick all my apples and sell them. So, you will have money.” The boy was so excited. He grabbed all the apples on the tree and left happily. The boy never came back after he picked the apples. The tree was sad. 后来,小男孩长大了,不再天天来玩耍.一天他又来到树下,很伤心的样子.苹果树要和他一起玩,男孩说：“不行,我不小了,不能再和你玩,我要玩具,可是没钱买.”苹果树说：“很遗憾,我也没钱,不过,把我所有的果子摘下来卖掉,你不就有钱了?”男孩十分激动,他摘下所有的苹果,高高兴兴地走了.然后,男孩好久都没有来.苹果树很伤心.写作思路：根据题目要求，围绕猫进行描写。
I have a cat named Mimi. Its hair is as white as snow.
我有一只猫叫咪咪，它的毛像雪一样白。
I often play games with it, it makes me very happy, I regard it as a child.
我经常和它玩游戏，它让我很开心，我把它当成了一个小朋友。
Every morning, I say goodbye to it before I go to school.
每天早上，我都会在上学前和它道别。
Mimi will wave its front legs to me, it brings me a lot of happiness.
咪咪会向我挥舞它的前腿，它给我带来了很多快乐。
But it takes time and money to raise a cat. My parents and I spend a lot of time looking after it, feeding it and cleaning it.
但是养猫需要时间和金钱，我父母和我花了很多时间照顾它，喂它，打扫它。
We must clean the house from time to time, otherwise the cat will make them dirty and stink.
我们必须不时打扫房子，否则猫会把它们弄得又脏又臭。
