y的二阶导数减y/cosx-查字典问答网
- 英语翻译Duringthe19thcentury,scientistsfoundthatwhencertainpartsofthebrainofapersonwerehurt,hewouldlosethepowerofdoingcertainthings.Andsopeoplethoughtthateachpartofthebraindoesadifferentjob.Butmodernresearch
- 【用对牛弹琴造句.】
- 【求一篇英语作文,主要讲怎么锻炼身体的,运动方式及原因】
- 【Alittleboyhadabadtemper.Hisfathergavehimabagofnailsandtoldhimthateverytimehelost(71)___temper,hemusthammeranailintothebackofthefence.Thefirstday,theboyhammered37nailsintothefence.Overthenextfew】
- 【ilikebeingoutside.这里的outside能换成outdoor吗?另outdooractivities是户外活动,那课外活动怎么表示,两个问哦,谢谢】
- 英语翻译杰克不如麦克擅长运动Jakedoesnot________sports__Mike
- 物理中相遇问题:A恰好追不上B和A恰好追上B有什么区别?
- 错误ItwasherwhosuggestedthathegotoNewYorkinordertogetadirectflight.Itwasuntilhegotamapthathestartedonhisway.Onlyunderspecialcircumstances___totakemake-uptests.A.arefreshmenpermittedB.freshmenarepermittedC.a
- 【英语60词作文.急求假如你的朋友是lily,她不喜欢做运动,因此身体不是很健康.最近她又感冒了,总是头疼,还会感觉疲惫,请你写一信,给她提一些建议.】
- 仿写句子一个会心地微笑让人感到温馨,一句真诚地安慰让人倍感温暖.