一元二次方程解题步骤

请问用英文书写化学式时,何时用前缀; 何时用后缀-ide; -ate; -um. 在java里==和equal有什么不同那其它类型呢 equal和equal to的区别1+1equal 2还是1+1equal to 2 equal和co-equal有什么区别啊? 关于equal和==的区别是不是这个是不是新建立了一个对象 还是同一对象的引用就算是不一样 这样区分有意义吗这样区分有什么好处 okay是什么意思 okay , 夸父,精卫,女娲有什么不同点 用女娲精卫和夸父说一段话 用女娲夸父精卫写一段话 夸父,女娲,精卫三人有何相同与不同之处? 改错：Detective Lu added that the police have found enough evidence at the scene ----- ----改错：1.Detective Lu added that the police have found enough evidence at the scene.-------- ------ --------- ----------------A B C D用所给单词的正 刚才杰克在箱子里装满了橘子.用英语怎么说 刚才杰克在箱子里装满了橘子.汉译英 make it okay 什么意思 Put a pencil in water and a pencil looks---A.long B.short C.broken怎么做 he had no right to believe on such evidence as was before him.问下这个as从句是怎么用的,写完整是什么样子. of ,from,用法是不是of 引导的介词短语作定语from 引导的介词短语作状语?来看两个句子：1、the visitors here are greatly impressed by the fact that __ people from all walks of life are working hard for a new jiangsu.答案 The new secretary has written a remarkably ________report within a few hundred wordsbut with all the important details included.A) concise C) precise B) brisk D) elaborate 为什么选D,不选A?concise不也是简明扼要的意思吗? A committee was ____ into being to discuss the cause of the accident.A.come B.brought C.made D.formed to和for和from和of区别举例子简单一点,范围初中,本人英语差,介词特别不行,求大神解助(*^__^*) Although it was autumn,the snow was already beginning to fall in Tebet.为什么用了already 又用一个beginning? he told me he had finished the work ___横线内为什么用the day before而不是two days ago He had told me和he has told me的区别 he had told 他曾经跟我说过? i arrived there just as it was beginning to snow.谁能告诉我这里为什么用beginning?什么用法啊? he told me he had a talk___A gives B giving C to give D gave选什么,为什么, 精卫填东海,矢志不移 下联 精卫为什么要填东海? 假如东海真的被精卫填平,那世界将会怎么样? Like I never ever loved no one before you I used to write your name And put it in a frame the more you ask then,the more you could answer me now.的意思是?