有叶绿体的是植物细胞吗

甲乙两人同时从相距20千米的两地背向而行,甲每小时行5千米,乙每小时比甲快7千米,3小时后两人相距多少千急急急急急急急急急米,方程 为什么屏幕尺寸按屏幕的对角线计算? 东西两城相距44公里,甲乙两人同时相向而行,甲每小时行7.5公里,乙每小时行7千米,两人又继续前进,问他2从出发到相遇后又相距14公里时,走了多少小时?急 汽车L和Gl是指什么 有些汽车后面写着GL, “leave They leave back to their town.他们回到他们的镇? He got back and then I left=I_leave_he got back. 10.等他来,我再离开.I _______leave _______he comes back.填won't until和will when都行吗?请详解. rated output是什么意思 如果有边缘,说明只是一个空间,那除了宇宙这个空间外,还有没有其他的空间? 急求能提升思维能力（如思考问题能力、逆向思维、应变能力、关于交际心理学方面的等等）的书籍? 翻译下,急的牙肿了!What do you think about the possibilities of this day? How do you feel about the circumstances you're in? What you think, the way you feel, the things you believe combine to create the filter through which you experience lif violence这个词有缩写吗?violence名词 n.[U]1.暴力,暴力行为The dictator ruled with violence.独裁者实施暴政.2.激烈,猛烈The wind blew with great violence.风异常猛烈地吹着.3.强力,猛劲He flung the door open with violenc On every side of the lake, there are wild flowers. 还是 On either side of the lake, there are wild return不是不能和back连用吗?那此句要选哪个?I want to know when you return ______ Beijing ______ New York.A.back to,from B.from,to C.from,back THE UNIT IS _____HOBBY.FOR IN ABOUT AND 一台彩电,打八折销售后比原价降低了120元.这台彩电的现价是多少钱? 一台彩电,打八折销售后比原价降低了120元.这台彩电的现价是多少元? 已知线段ab=15cm,c点在ab上,bc=3/4ac,求bc的长 已知线段ab=15cm,c点在ab上,bc=3/4ac,求bc的长已知线段AB=15cm,C点在AB上,BC=3/4AC,求BC的长 英语翻译 改为同义句1.The basket is full of flowers → 2.Toms didn‘t breakfast and went school in a huryy→ The basket is full ( ) cherries The red basket is full （ ） strawberrices （ ）里填介词 _____ is a little difficult.A.Unit fifth B.The unit fifth C.Five unit D.The fifth unit The garden was full of ___ (color) and unusual flowers.括号中的词变为适当的形式填入空白处,略作说明,顺便翻译一下句子. 《荀子 富国》记载,"今是土之生五谷也"《荀子·富国》记载：“今是土之生五谷也,人善治之,则亩益数盆,一岁而再获之.”荀子在这里强调的是A.要重视农业生产精耕细作技术的提高B.要及时 洗漱间英语怎么说? 已知平面区域如右图所示（包括边界）,Z=mx+y（m＞0）在平面区域内取得最大值的最优解有无数个,则m的值为________.图为A(5,3),B(1,1),C(1,22/5)三点连成一个三角形即可. 长方形的长是宽的1又4分之3倍长和宽的比是多少 长方形的长是宽的7/4倍,长和宽的比是（ ）:( ) 长方形的长是宽的四分之七倍,长和宽的比是 长方形的长是宽的1.5倍,则长和宽的比是