我的烦恼作文400

急求大学英语课前PPT内容不限最好别太难~~~~~拜托了各位~~~拜谢有的话发到我的邮箱qianjiaexe13@163.com 如图：正方形ABCD中,ac,bd相交于o,mn平行于ab且mn分别交oa,ob于m,n,求证：bm=cn 能不能把那个关于环境保护的英语PPT也发一份给我?邮箱：ccc9066@163.com.十分感谢! 有青草地,每天都匀速地长出青草,这青草可供27头牛吃6周或供23头牛吃9周,那么这片草地可供21头牛吃几周? 高中数学每部分要做多少题才行我的意思是每部分比如函数，数列等等各部分分别达都需要做多少题才能熟练和会 she ______the door before she goes away 高中数学题（说明原因）|a向量|=2|b向量|不等于0,且关于x的函数f(x)=(1/3)*x^3+(1/2)|a向量|*x^2+(a向量点乘b向量)*x在R上有极值.则向量a与向量b的夹角范围是?答案是大于π/3小于等于π,为什么取不到 阅读理解1.I did very___in the Chinese test 2.She kept___me questions.3.She___away my exam paperVanilla is my best friend,she is a lovely girl with two big,beautiful eyes,but she always hides them behind a pair of black glasses.One day,I nearly en 一牧场上的青草每天都匀速生长.这片草场可供27头牛吃6周,或供23头牛吃9周.那么可供21头牛吃几周? My father is not tall,and he is not short改为同义词 My father is____(tall),but I am _____(short)填合适的词快 What's wrong with后面加她,应该是her?she?还是别的 What's wrong with her?She ____ herself.She hurt herself.还是She hurts herself. 找出错误并改正1.What's wrong with she?2.I can get some waters for you.3.Don't take some mediine. 七年级上册语文魔方练习册答案 一片青草地,每天都均速长出青草,这片青草可27头牛吃6周或23头牛吃9周.这片草可21头牛吃几周? 英语变一般疑问句:They do their homework at halfpast six in the evening. 圈出片段老板、老板娘和伙计虐待凡卡的动词 in case of fire1.2.fire前面为何不能加the? 今天看娱乐新闻的时候,说布兰妮怎样怎样.到底是怎么了她?好像是讲她怎么怎么样了,她的朋友们讲希望她能振作起来,= =正好是吃饭的时候看的,也没怎么听清楚.到底是怎么了?我一直以来还 The sign reads “In case of _________ fire,break the glass and push ________ red button.” A./; a B./; the C.the; the D.a; a 桑迪今天看起来有点难过.她怎么了? Sandy looks ___ ___ sad today. What's ___ ___ her? （ ）fire,all exits must be kept clear.A.In place of B.Instead of C.In case of D.In spite of 怎样（ ）fire,all exits must be kept clear.A.In place of B.Instead of C.In case of D.In spite of怎样分析此题?请从句子成分,语法结构,时 （ ）fire,all exits must be kept clear.A.In place of B.Instead of C.In case of D.In spite of（ ）fire,all exits must be kept clear.A.In place of B.Instead of C.In case of D.In spite of怎样分析此题?请从句子成分,语法结构,时态等 in case of fire,break glass 英语翻译American BoyAmerican boy,living life as it goesSittin' on the fence postsLiving in the lieAmerican boy,living in the real worldTrying just to get the girlTrying to surviveChorus:The simple things in life are always newgrowing up on Sam Hi 哪位高手帮忙翻译一下Estelle的American boyJust another one champion sound me and Estelle about to get down who the hottest in the world right now. Just touched down in London town. Bet they give me a pound. Tell them put the money in my han American boy的歌词求American boy准确的歌词,并且有中文翻译,kanye west和estelle合唱的那首 描写小金鱼外貌的片段 英语翻译最好是全部的!我不要google翻译的链接（翻译的太差劲了!） 描写金鱼的外貌、特征、动作的句子 Silly Boy歌词的中文翻译Rihanna & Lady Gaga合唱的英文歌词如下：[Lady GaGa]Your callin me more than ever now that were doneTwo keys back to my place, we were havin no funBut you're not ok, telling me you miss my faceI remember when you