This is my room. Near the window there is a desk. I often do my homework at it. You can see some books, some flowers in a vase, a ruler and a pen. On the wall near the desk there is a picture of a cat. There is a clock above the end of my bed. I usually put my football under my bed. Of course there is a chair in front of the desk. I sit there and I can see the trees and roads outside.

New words and expressions:

kitchen   厨房          cook 烹调，煮    bicycle   自行车         tape  磁带

宋朝李纲曾高度评价隋文帝“混南北为一区”的历史功绩。他认为隋文帝“ 有雄才大略，过人之聪明。其所建立，又有卓然出于后世者”。李纲的高度评价反映了隋文帝一生的最大作为是（  ）

《荀子·君道》：“墙之外，目不见也；里之前，耳不闻也；而人主(君主)之守司(官吏)，远者天下，近者境内，不可不略知也”。引文认为，君主应当

由电解水实验证明水是由  (　  )

一组数据的最大值与最小值的差为23，若确定组距为3，则分成的组数是____