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如图所示,在正方形ABCD中有一点P,使得PA:PB:PC=1:2:3,求角APB度数,用勾股定理来算 帮忙算下高数极大值 一生一世...这个词怎么解释噢.. 英语中打电话时找某人自己就是那个人该怎么回答 alliance league union这三个词的区别? 平平一家四口年龄和147岁,爷爷比爸爸大38岁,妈妈比平平大27岁,爷爷的年龄是平平和妈妈年龄之和的两倍,求平平一家四口年龄（方程解） a star alliance member是什么 迎接你用英语怎么说. 如图,已知反比例函数图像经过点A,求当X=-4是y的值 在区域｛0= 《断章》的理解要深刻,简短20-30字左右,有个性也行哦 最后一题求神人帮助 英语演讲稿 The people I admire mostThe people I admire most Good morning!Ladies and gentleman!Today I will introduce a person who I admire most.He created Apple at the age of 21.But he was fired by his own company when he was 30.He was invited t because of 和for 到底填哪个?We are looking forward to the Olympic Games,( )they have neverbeen held before in this country.(a)for (b)why (c)because of (d) due to 为什么不选because of 请懂的前辈指教! 第四题答案上要填because of是什么情况 要具体的题 用because或because of填空.Daniel has poor eyesight_he watches too much TV.There is something wrong with my eyes_working on the computer too much.Andy stayed at home_her illness. “嘶鸣不已”什么意思? ①--Are you hungry now?--_______.I have just had two bowls of rice.A.Not a bit B.It doesn't matter.C.Not a little D.I don't mind②--We haven't heard from Jean for a long time.--What do you suppose_____to her?A.was happening B.to happen C.has happen 昂首观之的之是甚么意思 OOH在广告行业中是什么意思? 昂首观之的之到底啥意思啊 点位在广告界是什么意思? 昂首观之是什么意思? 在广告行业里主要从事什么业务?如题,小弟准备进一家广告行业,但是我知道这个是什么意思, 第五题为什么是b呀?求过程 可拍照回答 Her answer ________the letter made him happy?A.on B.for C.to D.at 甲乙丙三人平均分为85分,甲和乙平均分为88分,甲和丙平均分为86分,乙和丙的平均分是多少? 《A Farewell to Arms》是海明威的哪个作品?我需要作品概述 负的2分之派小于等于a 已知四分之派小于阿尔法小于四分之三派,零小于贝塔小于四分之派,cos(四分之派+阿尔法)等于负五分之三,sin(四分之三派+贝塔)=十三分之五,求sin(阿尔法+贝塔) she is said to be living in Japan now.为什么用is said?