小学奥数网：...

This is Lin. She is from Beijing. She studies very hard.In class she can answer the teacher's questions very quickly. Lin loves her classmates and often helps them with their lessons. Everybody says she is a very good monitor....

This is my bed room. There are two windows in it. Near the window there are some red flowers. A map of China is on the wall. You can see four shoes and a basketball under my bed. There are trousers and a coat on the bed. Many schoolbooks a...

四年级英语作文大全： When I grow up, I want to be an artist. I want to use my colorful pencil to draw this wonderful world to everyone. Some years ago, I did not know how to use the pencil to draw the picture for my mother and my father. O...

小学四年级学习网： When I grow up, I'm going to do what I want to do. I'm going to move somewhere interesting. Paris sounds like a city that I could that enjoy. There are lots of art exhibitions there. I want to be an artist . So how am I...

某年的十月里有5个星期六，4个星期日，问这年的10月1日是星期几? 解：十月份共有31天，每周共有7天， ∵31=74+3， 根据题意可知：有5天的星期数必然是星期四、星期五和星期六。 这年的10月1日是星期四...

小学五年级学习网： 一个两位数去除251，得到的余数是41.求这个两位数。 分析 这是一道带余除法题，且要求的数是大于41的两位数.解题可从带余除式入手分析。 解：∵被除数除数=商余数， 即被除数=除数商+余数， 251=除数商+41， 251-41=除数商， 210=除数商...

小学四年级学习网： 静水中,甲船速度是每小时22千米,乙船速度是每小时18千米,乙船先从某港开出顺水航行,2小时后甲船同方向开出,若水流速度为每小时4千米,求甲船几小时可以追上乙船? 答案与解析： 甲船顺水速度:22+4=26(千米/小时)，乙船顺水速度:18+4=22(千...

小学奥数学习网： 【试题】船行于120千米一段长的江河中，逆流而上用10小明，顺流而下用6小时，水速是()，船速是()。 【答案】 考点：流水行船问题. 分析：根据题意看作，船逆流而上的速度是船速减水速，船顺流而下的速度是船速加水速，由题意可以求出船逆流...

小学五年级学习网： 一辆货车从甲地开往乙地需要8小时，如果货车车速每小时提高20千米，那么实际只需要6小时就可以到达乙地，那么甲乙两地全程是多少千米？ 答案：480 解析：设货车原来的速度为X千米每小时，则提速后的速度为每小时（X+20），根据题意得：8X...