圆的平方怎么算

1.His parents are fine.(对画线部分提问) 2.Are they your teachers?（肯定回答） ——3.This is my friend（复数句） 4.Those are cups.（单数句）5.These are her brothers.（否定句回答） him her it 的复数形式是什么 They are my parents.（对划线部分提问） ----------------换线部分（my parents） him的复数形式 They are from my parents.对my parents提问 are they your parents?作肯定,否定回答 They are from {my parents.}对括号里面部分提问 day her i him child photo diary foot box的复数形式 her的复数形式是什么 小学80首古诗（必背）是啥? 鸭梨是什么?是鸭子吃的梨吗 鸭梨皮吃得好吗?能吃吗?有什么营养? As well as his parents ,he likes reading .这里应该用likes还是like啊? He as well as his classmates___physics.A.like B.likes C.have liked D.liked 3.The boy as well as his parents don't like the film.(改错)3.The boy as well as his parents don't like the film.(改错)3.The boy as well as his parents don't like the film.(改错)3.The boy as well as his parents don't like the film.(改错)3.The 英语翻译还有 不像她妈妈,她一点儿也不喜欢弹钢琴 有人说《桃花源记》寄托了陶渊明的理想,也有人说《桃花源记》表现了陶渊明的消极逃避,你是如何认识的? 一包瓜子重1/4 千克,比一包糖轻2/4千克,一包瓜子和一包糖共有多重? 一袋瓜子重50千克,每四分之三千克瓜子装一包,装了20包,还剩下多少千克?好的还有得加 some能代替可数名词复数形式吗? other不能单独使用是啥意思?some是加可数名词复数的吗?some people like to stay at home on sundays,but others like to go to the cinema.中的others不是代替了some people吗?others不是等于other+可数名词复数的吗?但是pe The writer is fond of gardens.( ) A.They like him B.They like to him C.He likes them D.He likes The girl ( ) her mother.They are the same.A is likes B look likes c is like D likes 正确是选c 为什 Her famliy is very helpful .we all like ( ) A.they B.him C.them He likes his student and they like him ,too 的汉语意思!谢谢各位大侠 早操排队的时候.如果看见前一位同学挡住了前面所有的同学,那么队伍就排直了,请说明 排队时,如果前面一位同学挡住了前面所有人,为什么队伍就变直了?我知道是光沿直线传播,但是能不能说得更具体点? 为什么早间操排队时看到自己前面的一个同学挡住了前面所有的人,就说明队排直了(用物理知识解答） 在排队时,如果看到自己前面一个同学挡住了前面的一位同学,队就排直了,这可以用______物理现象来解释 1、为什么做操排队时,为什么只要前面的一位同学挡住了前面的所有人,队伍就直了? 在一个长100米的跑道上,甲乙二人练习跑步,甲每秒钟跑6米,乙每秒钟跑4.5米,二人从跑道的两个端点同时出在一个长100米的跑道上，甲乙二人练习跑步，甲每秒钟跑6米，乙每秒钟跑4.5米，二人 甲乙两人以匀速绕圆形跑道按相反方向跑步、出发点在直径的两个端点.如果他们同时出发,并在乙跑完100米时第一次相遇,甲跑一圈还差60米时第二次相遇,那么跑道的长是多少米?用算式