两人独立地破译一种密码，他们各自不能破译出的概率为1/5和1/10，密码能被破译的概率为()

我的四六级成绩单丢了,可怎么办?对找工作有影响吗?请问如何补办四六级成绩单啊? 是不是定语从句中所有的都用that 四六级成绩单丢了怎么办?对找工作有影响吗?怎么补办四六级成绩单? 定语从句.关于THATA prosperity that had never been seen before appears in the countryside.这个句子是从百度百科上找的.QAQ.但是我的朋友却说这不正确.理由如下：首先,that 后面是从句.had never been seen before 是 that定语从句he was watching the children and parcels that filled the car这句话书上的理解是　他望着塞满车的孩子和包裹为什么不可以理解为　他望着孩子,车里塞满了包裹． There\'s no easy path to Can I cross the street now?(The traffic light is red)否定回答No,you_____________________. -I won't have a trip to Mount Huang unless Amy--,either.-You mean you're go if Amy goes?此句是复合句,因此句时态是将来时,从句用一般现在时态表示将来.提问：非常不理解,难道所有的复合句都是这种用法,不用 什么时候用现在完成时?什么时候用过去时?i have been to mount huang.为什么不说i went to mount huang I Have gone to Mount Huang.改为一般疑问句 He is the wiser man who does not think himself so看谁的IQ高! 1.Hurry!The bus is coming.Wait a minute.Don`t cross the street______the traffic lights are green. 《小马过河21天搞定新托福听力》里的听力材料是托福真题吗? a short history of western painting作文 There are four people in my family.这里“people ” 难道不是复数形式吗?peoples.There are four people in my family.这里“people ” 难道不是复数形式吗?peoples. Sorry,We cannot find the page you requested.这是什么后置语法?这类句式属于什么后置语法? The requested URL /sorry/sorry.htm was not found on this server这句话是什么意思 “the page you are looking for is not found”的语法结构是什么? The requested URL \'/undefined\' was not found on this server.这是什么 The combination of economic and career opportunities,preferential government polices andsponsorship for studying abroad is ---- lies behind the reversal of China's brain drainA.where B.which C.what D.that 横线处选什么 involve 都有哪些用法? Beautiful Life is a combination of opportunities and sweat,courage and wisdom of.翻译,并求详细的语法分析, 新东方马骏给的托福场景分类练习的答案哪有啊?北京新东方 翻译：tough times dont last,tough people do Is basketball your favourite?(同义句) Information has been put foward ____ more middle school graduate will be admitted into universities填 that.别人和我说这是同位语从句.我印象中 同位语从句放在名词.Information that more middle school graduate will be admitted in Information has been published ____ more middle school graduates will be admitted into universities.为什么要用that favourite basketball sports your piaying is 连词成句提问 the colour of the world英文作文提纲 帮个忙 求一篇100字左右的英语作文,题目为The Color of Spring Festivl 关于不见风雨怎么见彩虹的相关事例 英语翻译空格处填冠词,但是请问怎么翻译啊?