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一道高中数学题三角函数 若sina-sinB=-1/3,cosa-cosB=1/2,则sin(a+一道高中数学题三角函数若sina-sinB=-1/3,cosa-cosB=1/2,则sin(a+B)的值是 Was he absent from school last week?这句话里的from是什么意思为什么这个地方要用from呢?为什么不用in or at? 王祥事后母的阅读答案 王祥事后母事的意思 王祥事后母翻译 八年级英语阅读练习Five years ago,Rachel Lopez graduated from college with a degree（学位）in history.Today,she works for a large company.Now twenty-seven,Rachel takes classes twice a week after work.She is learning to use the computer pr 英语作文：The best place I have ever been to That is the _____(wonderful) place I have ever been to Jimmy was absent from school last week.同义句 《王祥事母》给我们的启示是什么 就是说明的道理,不要“体现王祥的孝心”之类的、、比如：“爱是互相的,只有付出了爱才能得到回报 ”这种、、、 It's one of the best places _I have ever been. It's the most beautiful place __I have ever visited为什么第一个空填where,而第二个空填that?求详解! This is the place_____ he works.2.This is the place_____ we visited.A.which B.where C.who D.Why选哪个 不选那个说清楚啊 中译英：这是什么地方?疑问副词该用what is this place?还是where is this place? This an exciting place ____I have ever visited.空格处为什么用which而不用where? 暑假作业英语答案 He is tall and has short hair .(对tall and has short hair提问) He is tall and has short black hair的问句是什么?快点 He is tall and ___ short hair___里面填虾米? he is a tall man()yellow haira.in b.with c.of 求一句英语翻译：我整个10月份都在国外出差,到今天才回来 抱歉这么晚给你答复. 三角函数知道sina+cosa=1/3怎么求cosa和sina呢什么方法最快 This is the best book I have ____read. A.never B.ever C.often D.just the bear,the tall man and the short man谁有这篇课文的原文啊?能翻译出来的话再加分!是翻译出课文！这篇课文是六年级英语下册第52页的课文！ This is the best book ______ I have ever read in the past years. A.when B.which C.that D.who what is that man A.he is John B.yes.it is a man .C.it is John D.He is a worker John is a ___man.He is a businessman. 英语it is the most interesting book that i have ever seenit is the most interesting book that i have ever seen 中的that可以省略吗 He is a very kind man．中的副词是什么 the man is very kind用how 改写为感叹句 His father is very busy ,he is a man---businessA.on B.for C.at D.in选什么谢谢 hsi father is a kind man.he is very______(help)用所给单词的适当形式填空 last night,last Saturday是什么时态的标志词,那last week