超声波的穿透力

instead of fewer mistakes ,there were more in his writing.more是代词,还是形容词比较级 instead of fewer mistakes ,there were more in his writing.fewer是代词较少的意思,还是形容词比较级 Instead of fewer mistake,there were more in his writing.局中的比较级死什么用法 找出错误,并改正There were no factories 50 years ago.There weren’t many people also.快. 关于一篇预防H1N1的英语作文字数在120—150个字左右 预防H1N1的英语作文 给我一篇怎样预防甲型H1N1的英语作文 预防h1n1的英语作文怎样预防甲型h1n1 急求!以How to do your homework on the computer为题目写一篇40词作文,介绍一下如何在电脑上写作业 write about how you can use the internet to heip you with your homework 怎么写（底下画了三条横线） can you tell me how_____(Write)my homework on the computer? The effect of computer on your life 的短文如题The effect of computer on your life what is the most serious problem facing the world?why?how can this be fixed以此为主题写一篇演讲稿！2-3分钟 what are you most serious problem will the english lanaguage以这个为题写一篇文章，what are you most serious problem with the english language ······ have you ever______to Hangzhou Park?visited toured gone traveled选哪个为什么谢了 Have you ever been to HangZhou为什么用been 不用went 呢 how to improve your health初三水平英语作文60字 what can't be used until it's broken 求七年级英语作文 How can you keep your body health急 What has to be broken before it can be used?What has to be broken before it can be used? What has to be broken before it can be used? In your kitchen ,what can't be used unitil it's broken.what is this? You never cherish what you have until it is gone 啥意思! At you now what is the time to China? 我继续一个演讲稿,是 “Facing enviromental problems,what shoud China do? te amo para siempre 请你围绕“Hao do you prefer your English classes to be taught?In English only,or in both Englis...请你围绕“Hao do you prefer your English classes to be taught?In English only,or in both English and Chinese?”这个问题,写一篇英语 英语语法求看破 That is the only issue that I want to di英语语法求看破That is the only issue that I want to discuss [with my classmates.]这句以that为主的定语从句中是否应该在其后添上括号里的话? ( )have you been a great voilunteer?For more than three years. 求一首女人唱的英文快歌,其中歌词so i want to say thank you cause makes me that my stronger歌词里面还有：mekes me that my wider thats make me (feater)这个词可能不对 但发音是一样的还有 makes me that my father之类 I have been an engineer for more than ten years,but I was once a worker for three years.这里was once a worker 为什么不是had been a worker? What has to be broken it can be used?猜英语谜语