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梯形的上底为a,下底是上底的2倍,高是下底的3分之2倍,用式子表示梯形的面积. 第一天行全程的五分之二,第二天行剩下的二分之一,第三天行余下的十五分之四,剩下路程55千米,全程? 决定人的体质（胖瘦高矮）遗传是主要因素还是后天习惯是主要因素? 刚看了新水浒传,水浒传的宋江和吴用为什么接受招安?为什么打下城池不占据城池,还要回梁山呢?为什么不自立?为什么不灭朝廷?明朝朱元璋和东汉刘秀等.农民起身的都当皇帝,为什么他们就 论述保证和提高商品质量的重要意义要2000字,.左右, 为什么12月份还有苍蝇?武汉为什么12月份还有苍蝇.而且现在还有我面前飞来回去.今天圣诞节. 我把苍蝇放到一个饮料瓶子里?为什么还能存活.我把苍蝇放到一个饮料瓶子里,把盖子盖好,应该是没有很密封,没有氧气吧,他为什么都促存活了三天了? 苍蝇最高能在多高的温度存活 lim x趋于0 f(x)/x^2=5 求lim x趋于0 f(x)=? 若f(x)在x=0上连续且lim(x趋于0)f(x)/x=2,求f'(0)=多少? 苍蝇可以持续飞行多长时间?如果一直不让苍蝇落地休息,过多长时间它才会累得无法飞行? 求一首歌的名字!女声的,节奏感很强,中间有一段give me a free free free.还是give me a break...之类的如题. 苍蝇的生活温度是多少 Are you often listen to music in your free time?没学过 但报纸有 We break the peace,I want to free if you are frozen-press ok rapidly to break free的意思 若a+b+c=0,且a≠0,则一元二次方程a㎡+bm+c=0必有一个定根,它是 若t是一元二次方程a㎡+bm+c=0(a≠0)的根,则判别式△=b的平方-4ac和完全平方M=(2at+b)的平方的关系是? 若a十b十c=0,且a≠0,则一元二次方程a㎡+bm+c=0必有一个定根,它是什么 1千克桔子的价钱是3.4元,买x千克,付出50元,应找回（）元? 或者不是,共调查了1000人,300人回答是,请估算其中有让座行为的人数是? Error (10278):Verilog HDL Port Declaration error at led_display.v(9):input port "data_in" cannot be declared with type "" 1.Are you in high school or are you still in the grades? 1.Mary ____ a gift from tina,but she didn't seem to _______it A.received;accept B.received 1.Mary ____ a gift from tina,but she didn't seem to _______itA.received;accept B.received receive C .accepted;accept D.accepted;receive I ___ the gift,but I did not accept it.Ahad received B received i has received a gift ,but i didn't want to accept这句话是否正确 英语 I ____ an expensive gift for my birthday,but I could not ____ it.A.accepted,received B.re accepted accepted 求you are the music in me的歌词 you are the music in me 的歌词是什么.是zac版的,帮帮忙哦 一个正方体的体积为216cm的立方,将它锯成27块同样大小的正方体,求每个小正方体的表面积. 在直径8m的水管中,水流速度是每秒2.5m,那么5分钟流过的水有多少立方米?