二阶可导是什么意思

你终于还是回到了他身边,翻译成英文 需要准备托福短语吗,如果需要,如何准备托福短语? 帮我paraphrase一下,改成名词短语两个句子,意思不变,改成名词性短语.1 cultural factors which may affect business activities.2 strategies should adopt for the impacts of cultural factors to business activities. 托福词组必备与雅思词组必备两本书有什么不同? It's really a____ to see such a beautiful sunrise. a beautiful living 什么意思? 过去时表被动的用法She directed her steps towards the end of the garden. 向花园尽头走去这个是字典上面copy下来的我想问问She directes her steps towards the end of the garden. 用三单形式写对吗?翻译过来就是她 您好,请问可以把人教版英语九年级全一册的磁带mp3发给我吗?请问可以把人教版英语九年级全一册的磁带mp3发给我吗?如果还有后面的单词录音也发给我吧, The policy is being implemented to protect information and reduce drag on the department's networks,如何翻译 如果在地球的北极上方打一孔,从孔中投一石子,它将处于什么地方? 我扔一个石子 那么事件“这个石子将会落到它将要落到的地方”的概率应该是百分之百 可是那个点的测度是零 概率应该是零才对 用if是否的意思造句if有个是否的意思,这个怎么造句啊~~ 谁知道竞争失败的例子 郭永进什么人（讲道德经的那个） 道德经中"善用人者为之下"怎么解释? 09 09 19的托福机经口语TASK1Tool, object in your daily life.可以说internet么?1 with internet we have emails, send more than one letters, attach pictures. 2 onling shopping, more convenient than going to stores.还是得说computer之类比 托福口语task1求大神批改啊~希望能纠正我的那些中式英语.还有内容上给点建议~2013-020-2NA task1Which following way of education do you support most?Through books,through communication withinthe community,or travelling aroun 有谁知道怎样把磁带上的音频文件转换成MP3格式的文件啊?怎样把磁带上的音频文件转换成MP3格式的文件啊?最好不损伤原来的音质! 磁带怎么转成mp3或者其他形式的媒体文件? 请问下有谁知道word文档,工具中字数统计没了怎么搞出来　就告诉我吧在此感谢各位了 告诉下word文档怎么统计字数?　要用呀,我在此先感谢了 琵琶行事物是什么 He found it necessary for us ( ) from each other.a.to help and learn b.helping and learning c.to learn and to help d.learning and helping选择并说明选它的理由 英语做题, 1.people usually write an address at the__corner a/right top b/top right c/right bottom d/bottom right 2.改同义句两题：i hope you will write to me soon=i'm looking forward to___you soon.i'll tell you something about myself =__me introduce___to 孟德尔豌豆杂交试验子三代高矮品种的比率是多少?子2代高比矮是3比1,子三代是多少?我算得是9比7感觉不太对,我从算了也是5比3. 闭字组词有哪些 闭的组词有哪些 闭组词有哪些 闭组什么词 闭怎么组词 托福口语task1Describe the most important development of your country in the past 20/25 years.Explain why this development is important?Please include details and examples in your response.最好用英文回答