垂心面积比

一个改病句帮帮忙can I ask you some question about your vacation plans Can you talk about your什么about this question? Can I ask you a __ about your vacation plans? 初三化学实验中怎样除去某种物质的杂质?我听老师说,如果某种反应物中有杂质就要除杂,有一条公式,好像是某种物质的质量乘以该种物质的纯度,就可以得出该物质除去杂质后的质量,麻烦大 化学实验-如何去除食盐中的杂质答案要有步骤,如；实验器材,实验步骤. _is the price of the MP4?_60 dollars.A who B how C what D how much是选C,还是选D.最好有理由 影响蚕生命和变化的因素有哪些? 蚕在生长过程中身体的形态会发生变化,这种现象叫什么? 医生用的听诊器是靠什么传递声音的A.固体 B.液体 C.气体 D.固体和气体.请详细讲明原因,讲得要能听懂哦 广泛地阅读各种书,写词语（ ） 在使用鱼药的过程中,要注意避免出现? 5L小型发酵罐离体灭菌时有哪些注意事项?请高手详答, 光敏印章里面加了原子印油怎么处理干净? I want to see that 1、The hill is so high that i don`t want to climb(改为同义句） The hill is ___ ___ for me ___ clim1、The hill is so high that i don`t want to climb(改为同义句）The hill is ___ ___ for me ___ climb2、He has ever traveled on a plane （ Lady Gaga-You and I是说什么的? 辩论赛 同学犯了错该不该当面指出 我是反方 求辩词! 拒绝凑热闹!求高人帮忙!求具体! 我是2辩 说有三分钟的演讲时间 新理念补习的! 要用了! 美国康奈尔大学出现哪些科学家 Is this words of a Is this words of a song sea of love fly to the sky我想要这首歌的罗马音啊 求的中文歌词,歌手：Fly To The Sky I saw a lot of birds_____in the sky yesterday.(fly) 英语interest什么意思 请问此句中的“interest”是什么意思?There are also weekend visits organized to San Francisco and places of interest in California. A lots of names,number, words ,etc 是什么单词 how to remember lots of english words?I have to remember lots of words,because I will do SAT.I have to do.How should I remember them ,Is there any way?I always remember them ,then forgen them .I am so worry about it.Thank you.If you know something,pl It's up on my feet 我只知道是询问健康的 There are lots of words on the opposite s( ) of the paper He hurt his foot trying to kick my dog.根据所给的回答写出问句 We learned lots of new words lost t____.I have become a good language ____(learn).It seems that she is afraid ____(leave) the room.I decide ____(work) hard from now on.Can you ____ ____ ____?你能造出完整的句子吗?We were ____ by his ____.他 流行病学中interest