∫t2(1+t2)dt

a fire can happen when you'are sleeping at home.____ can ____a fire when you'are sleeping at home. we are happy now.(改为一般疑问句) When Tim heard the fire alarm,he___quickly.(get up)When I was young,I____play witch candles.(can't)When Bob ____out of the window,he saw smoke.(look) You mustn't pack your school bag when you hear the fire bell.保持原意怎么改?这句话我不懂,回答的,顺便也把它的意思写出来吧,还有保持原意的句子. 一棵小树高1.75米,小兰身高1.37米.她站在凳子上比小树高0.12米,凳子高多少米? 小朋友平均身高是115厘米,其中男孩人数比女孩多5分之1女孩平均身高比男孩高10分之1（只要解题思路）急死了 加急,只需告诉算式和做题思路.小小的身高是154cm,比入学时长高了40%,小小入学时有多高 ____happy life we are living now!A)What B)How C)How a D)What a we are living a happy life 句子成分 have been How long___your cousin___shanghai?A has...left B did...leave C has..been away from D has...been away选什么?为什么选这个答案?还有been away from 与been away的不同之处? I have been away from something please leave a message什么意思 红绿蓝三色光混合得什么色光红光 绿光 蓝光 照在一起得什么颜色的光?急 我物理书忘记带回家了! --The meeting is at ______ time for me.I'm afraid I can't come.--OK.Please come at your ________.convenient的正确形式 — Would you like to come to the party,please?1 Thank you for your asking.2 I think we will have a good time.3 No,I wouldn’t.4 I’d like to,but I have a lot of things to do tonight. 有种花像芝麻花一样一节一节开花的,花形像喇叭花一样,有各种颜色,是什么花啊? 有一种花的种子和黄豆粒那么大,是黑色的,有点像地雷,花的样子像喇叭花请问一下这是什么花, 花的颜色是粉红色的, 红色的,和喇叭花差不多的是什么花? [help]~诗词!闲来春雨秋风凉,一过淮河日影长.院落黄发跳石阶,石阶青绿转鹅黄.默默蝉声藏,转眼一季忙.大雪满朔北,胡笛又苍凉.曾经少年不知愁,黑发三日薄染霜.梦里过客笑眼望,望回廊,秋螽 解释下面词语的意思,谢谢!help!help!help! help!1.consumer demand 2.population base3.economic impact4.legalities5.moral issues6.cost(star-up operating)7.expenditures8.projected profit margin 鲁迅《秋夜》阅读答案1描绘的是个怎样的秋夜2文章中，哪一种景物给你印象最深？为什么3夜的天空和枣树形成一种对立的关系，各象征什么4“在我的后花园，可以看见墙外有两株树，一株 秋夜 鲁迅 秋夜 —鲁迅在我的后园,可以看见墙外有两株树,一株是枣树,还有一株也是枣树.这上面的夜的天空,奇怪而高,我生平没有见过这样奇怪而高的天空.他仿佛要离开人间而去,使人们仰 一年级时文具或者生活用品吗?拿出来和现在的比一比,你从中发现了· （ ）回答的有点水平行不行 带思的词语(四个)急help!help!help!help!help!今天就要! at once翻译成英语 She is a worker.(a nurse)变成选择疑问句 maybe she is a nurse(转换) she () () a nurse “太阳发出的白光是由红、绿、蓝三种色光组成的”这句话为什么不对? 把直接引语变间接引语"did you see her last week?'he said. Did you see her last week he said改为间接引语 Did you see her last week he said改为间接引语30词?急