opportunity可数吗

什么是心房颤动（房颤）?该如何治疗? 写出可以代替画线部分的单词或短语.1.Dose your good friend know the date of your birth?Dose your good friend know_______.可以代替：the date of your birth 的单词或短语.2.I was born in the first year of the new century.I was bo 但是我就是做不出来,不知道怎么短路了）1.cot70°+4cos70°=______2.若x∈[0,2π],函数 y = 根号下（sinX）+ 根号下（1-tanX）的定义域是（ ）A.[0,π] B.[0,π/2） C.（3π/2,2π] D.（π/2,π] 第2题我觉的答案有 替换画线部分的单词急 脑袋突然短路了已知函数f(x)的定义域是（0,+∞）,且满足f( xy) =f(x)+f(y),f(0.5)=1,如果对0＜x＜y,都有f(x)＜f(y).(1) 求f(1)(2) 如果f(-x)+f(3-x)≥-2,求x的取值范围--------------------------------------------------第 The child came crying up to me.句型转换~The child came crying up to me.The child ____ ____ me. he showed me the way to the station.(改被动语态）she has received a good education.(改被动语态) there are 100 years in a c_初中词汇专项练习 ______the end of the meeting ,juhn came uo and tntrodyced himself.A in B by C at D to 为什么选D,最好能详细讲解下 there are fewer people now.用in 100 years 替换nowThere ____ ____ _____ ____fewer people in 100 years. 即使在有太阳的日子里也会担心下雨这种恐惧甚至压抑住了阳光的含义是什么 歌曲《sunlight》的中文意思全部歌词的意思 权威主义是什么?新权威主义是什么?国家追求的究竟是哪种模式?是其中二者还是另有其它? what will huppen when there are not any tress in 100 years标题英文的意思是什么? 什么是权威主义道德RT 专制主义与权威主义的区别与联系 夜归鹿门歌 诗歌开篇写了什么意象,作用如何 新权威主义如何走向民主 official是什么意思.求这句翻译.But Brazil declared him an official national treasure so he would stay in the country.The underlined word “treasyre” probably means( ）A.highly valued person B.valuable gift C.a great deal of money D .big official 意思这句话是这样的the Olympic rings are the official trade mark of the IOC.如果能整句翻译就更好了 official意思 official official dig的意思imagine yourself on an official dig there isn't any……?There isn't any+名词单数（比如：there isn't any picture in my classroom. No,there isn't any,but there is some beer. 科学的每一项巨大成就7? Samuel Johnson to Lord Chersterfield我想知道有多少人翻译过这部作品?如果能给出相关翻译就更好了..谢谢 Who has written the reports in the passage八年级寒假生活45页mars mystery 英语填空the passage _____(使感兴趣)me because. sufer与sufer from的区别希望是非常正确的! The passage was written bu Zhu Ziqing的同义句是什么? 有一首英文歌 男的唱的 第一句是BABY I KNOW THE STORY.有谁知道是什么啊