布尔逻辑运算符号与的作用在于

爱莲说中,描写莲花正直的语句是? I need help 有一包白色固体粉末,可能又碳酸钙、硫酸钠、硫酸铜、氯化钡、硝酸钾中的一种或几种组成,做试验可以得到以下结果①将这些固体粉末加到水中,得到白色沉淀,上层清液为无色②该 19和20最小的公倍数是几 _____is not a long way to drive.A.Three miles distance B.Three-mile distance C.Three miles’ di可是为什么啊? 三千米高：three kilometers high 还是three thousand meters highkilometer 能否表达高度 英语中你和我是you and I 还是you and me,为什么 Two kilometers ( ) a long distance.填is还是Two kilometers ( ) a long distance.填is还是are three thousand还是three thousandsRT Sandy helps Amy and Amy helps Sandy.同义句转换They each have an English dictionary. 怎样判断英语句子中的哪部分作状语? Sandy sits___(介)kitty and_____(I) 英语中状语重句怎恶魔 用法 Sandy and Kitty like walking.(划线提问)walking划线 一句句子有关英语状语的问题I found the foor unlocked,I went into the kitchen.改为Finding the the foor unlocked,I went into the kitchen.为什么Finding the the foor unlocked 说的是时间状语 我没搞懂,为什么不说后面那句 lucy helps me and I help Lucy,too.(同义句转换） 英语状语可以放在句子的任何位置? i help him and he helps me .（改为同义句） His family name is (smith).对划线部分提问 They boy said ________ couldn’t he work out the problem but his teacher didn’t know how to do it.A.though B.never C.hardly D.not only if they know how they can help make it so. 什么意思?Almost every place can be safe for our children,【if they know how they can help make it so. 】请帮忙讲讲后半句 they can help make it so. 谢谢!谢谢,我是想知道help make it so 时间状语 可以修饰整个句子吗?如：I will go to Beijing tomorrow.副词,除了修饰,动词,形容词,其他副词,不是说还可以修饰,我觉得这里就是,表示时间,修饰整个句子,呵呵,你们帮我看看吧? 你知道sandy发生了什么事?用英语怎么说 Sandy旁边的男孩经常帮她学英语用英语怎么说 除了Sandy外,我们都去了图书馆.用英语怎么说? 将下列单词组成句子 1.my,is,Helen,friend,Smith 2.your,name,is,last,what sandy 为什么喜欢钓鱼 用英语怎么说 Last time they _______ ______ ___Last time they _______ ______ _____ _______ _______(输给了另一支队) 关于将来时态的表达有哪些?(英语的） need 关于实意和情态的关于否定时的用法 1,some the poor who don't know poor them is（are） 2,some the poor who don't know poor The traveller didn't know(?)which direction to go.A.in B.at C.to D./ Santa Teresa was Maria's birthplace, but she had left the town at the age of six. Sha had some memories if the town, and some photos, but did she belong here still? She didn't know.这句怎解, 谢谢eidt: (SHE) had some memories (OF) the town,