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如何分辨这道题的砧木和接穗?如果给你两种梨：一种是杜梨，它的果实小，味道色，但根系抗病能力强。一种是鸭梨，它的果实大，味道甜，但根系抗病能力弱。如何能获得根系抗病能力强 什么作接穗,砧木 原题为：一枝原来开红花的碧桃枝条,嫁接在一株开白花的碧桃上,这个枝条将来开的花是什么颜色? 分析哪个更好deal with the work between IOS and Android/coordinate the work between IOS and Android中文是协调处理好IOS和安卓的工作 初中生物砧木和接穗具体含义快中考了我想知道具体具体的含义啊 及有什么好处和坏处 要权威的 And if the choice is between those environmental goods that are fundamental and those that are merely aesthetic.翻译 百度上怎么提问题 姓氏是从哪个朝代才有呢?感觉历史早期的人都有名无姓 某个岛上有座宝藏,你看到大中小三个岛民,你知道大岛民知道宝藏在山上还是山下,但他有时说真话有时说假话,只有中岛民知道大岛民是在说真话还是说假话,但中岛民自己在前个人说真话的 什么的小岛 小岛南有那些作品 神秘的小岛 为什么说它神秘我们老师说的：小岛突然出现,生长速度惊人,小岛突然消失,这一切让小岛变得神秘.我说的是课文：神秘的小岛. could not keep to do the man could not keep it in his pants if it was tide to a zipper 的意思 施华洛世奇元素跟施华洛世奇水晶有什么区别? Asking for a poem about “skipping school”,Minimum of 3 stanzas, minimum of 4 lines in each stanza. Includes characteristics of traditional spirituals (call-and-response, African style &rhythm of music, repetition of lines, tunes & asking for有没有求购的意思?>_ let's write letters to each other onstead of They are c_____ frends.they often stayThey are c_____ frends.they often stay together Sex play 怎么下载 I think i can forget you one day we use ears to____;we use ___to touch. 改错:We can use a TV set to send emails like后面加什么在什么情况下用like to do 什么情况下用like doing who plays father 和who play brother and sister 中的play为什么一个加s一个没有. 请问这是什么币种?那当时和现在折合人民币大约多少钱呢? $是什么币种 这是什么币种啊? 多币种是什么意思? Choose the most suitable answer1.___ moon revolves round ___ earth.A.X,the B.A ,a C.A,the D.The ,the2.There is ___ “N” in the word “English”.A.a B.an C.the D.X3.__ elephant is ___ useful animal.A.the ,an B.An,a C.An ,an D.A ,an4.To my surpris 比方说Do you know the man whom I met和This is a man whom I talked about .第一句whom是做整个定语从句的宾语,而第二句的whom是做介词about的宾语,注意是介词,那么”关于定语从句中关系代词作宾语可省略“ fill...和fill with...有什么区别?