有一沓500张的A4纸，长约是30厘米，宽约是21厘米，高约是5厘米。你知道每张A4的体积大约是多少立方厘米吗

复印一下就可以了,然后跟老师说一下.

每张a4纸的体积大约是
30×21×5÷500＝6.3﹙立方厘米）

一沓纸张的标准数量是500张,办公及日常印刷纸；每张纸的克数在9--100克之间,卡纸除外.每张正度纸的标准尺寸是109.2x77.8cm如；

【沓】
结构是【上下结构】【会意字】
部首是【水】
部外是【4】画
总笔画是【8】画

谁在保持梦想,谁就能梦想成真,谁能坚持不懈的追寻理想,谁就能不断地实现理想.O(∩_∩)O~要采纳哦.

D

逮老鼠（dǎi

B

沓 dá
基本字义
1.量词,用于叠起来的纸张或其他薄的东西：儿纸.子.
详细字义
〈量〉
1.堆,叠.堆在一起的或逐个叠放的薄的东西 [pile].如:一沓银洋
2.用于叠起来的纸张(如书写纸等),可一张张扯 [pad].如:一沓信纸
钱和纸一样,所以读dá

This is the everyday that I miss you.I am missing you...

你想太多.
留言而已
说不定是整你的.

答案是280元.
由于第一堆的钱数相等,所以第一堆钱总数的一半为2和5的公倍数,则为20的倍数.
由于第二堆的张数相等,所以第二堆的总数是7（=2+5）的倍数.
由于第一堆钱数=第二堆钱数.
所以每一堆的钱为20、7的公倍数.
由此可知,每堆钱为140元,总数为280元.
验证：
则第一堆=第二堆=140元
第一堆有5元14张,2元35,共140元. （符合）
第二堆有5元20张,2元20张,共140元.（符合）

My favourite sport
Hello,everyone!Do you have a favourtie sport item?I think you do!I also do.My favourite sport is swimming.
Every afternoon,I go swimming in our small river.When I swim,the small fishes often play with me and kiss my foot too.It makes me comfortable.My parents say I will have a good health if I insist swimming in a right way.So I always ask my P.E.teachers some questions on swimming and he always help me very much.
Ok,that's all.If you also like swimming,please contact me and let's enjoy it!
my first trip
Yesterday was Sunday.The sun was shining.My friend invited me to have a trip to LingShan Mountain.I was a little excited and nervous.I had never go for a trip without my parents.Especially this time we would go by bike.I got up very early ,after getting up,I began to get ready.I checked my bike and put some water,food in my bag.At eight o’clock,we started.It’s about 50 kilometers far from my home to the mountain.After two hours’ riding we had a rest,we drunk some water and ate something.All of us were very happy.After the rest,we were on our way again.About two and half hours later we got to the foot of the mountain.We were very happy.One of my friend wanted to climb the mountain at once.But we don’t agree with him.We decided to find a hotel to have a rest instead.And climb the mountain the next day.We didn’t find a hotel but a peasant’s house.The peasants were very friendly.We had a good rest.The next morning we began to climb the mountain.We climbed the mountain while talking and singing.All of us enjoyed the beauty of the mountain.At about four o’clock in the afternoon we got back.We were a little tired but we were very happy.

da二声,我刚学

1、一个人的生命只有一次,要好好把握住,让自己活得精彩一点,让生命绽放光彩.
2、我们每个人的生命不就是不到一个百本的日历吗,算算你手中储存的还有几十本?十几本?甚至就几本了,生命的长度就是那些还没有撕下来的日历厚度.
3、列举.这样更体现出时代巨大的变化都印在我们脑海里.
4、一个生命的精彩不过是一本影集,这个世界的飞速发展都是一个个精彩的瞬间,全世界都在上演着精彩的一幕幕,这样精彩的影集才是一个人生命的精彩.
5、我们每个人都应该好好地活着、精彩的活着,不要虚度年华,让自己以最好的状态面对每一天,因为今天不会再有一次,所以我们一定要牢牢把握时光,让自己的生命每一天都精彩无比.
自己写的,献丑了