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为什么许多麻雀用昆虫为小鸟,而不是用谷类喂小鸟? 比喻白费力气永远不能实现的事情的成语 比喻白费力气,永远不能实现的事情.成语? 1形容十分拥挤或围得密密层层·还一个比喻白费力气,永远不能实现的事猜成语,急 比喻白费力气,不可能到达目的成语是什么?如题 一张桌子售价238元,比一把椅子的4倍少2元,一把椅子售架多少元? 一张办公桌的价钱是238元,比一把椅子价钱的3倍少20元.椅子的价钱是多少 一张桌子的价格是58元,比一把椅子的价格的4倍还贵2元.一把椅子的价格是多少元? 草坪如何施用磷钾肥 形容鸟类和昆虫的嘴的词语 Know more words and expressions,____you will find it easier to read and communicate.(and ,then )选哪个? --English has a large vocabulary,doesn't it?__Yes.______ more words.and you will find it easier toread and communicate.A Know B Knowing C Knew D Known One more word ,and I will hit you flat这句话中文是什么意思? 家中哪些东西可以用来当磷钾肥 怎么自制磷钾肥 如何配磷钾肥 The trip from Kitty's school to the World Park took about two hours by coach(同义句转换）We _____about 2 hours_____ _____kitty's school_____the World Park难死了，在线等啊 The trip from Kitty's school to the World Park took about two hours by coach(对划线部分提问)划线部分是about two hours ___ ___ ___ the trip from Kitty's school to the World Park __by coach? The trip from Kitty's school to the World Park took __ about two hours___ by coach 划线部分提问_____ ______ _______ the trip from Kitty's school to the Worid Park ______by coach? The trip from Kitty's school to the World Park took about two hours by coach(同义句转换）It's about two _____ _____ by coach from Kitty's shool to the World Park 填什么?是填hours' way 还是hours away还有我想知道away的用法··· 每把椅子x元 每张桌子的价钱比每把椅子的5倍少y元 Look At Us -Sarina Paris look at 的意思是什么?有多少写多少 .. look at They\'re looking at us.的意思是什么 蜗牛要住在哪我家捡了一只大蜗牛不知道该怎么办 用于鱼体消毒的漂白粉药液要如何配制? 含有0.5%的漂白粉水剂喷雾消毒.现有漂白粉30克,可以配制漂白粉水剂多少克?需要水多少克? 生物陶粒滤料滤池的漂白粉溶液如何配制? (5)某次配置中取一定质量的漂白粉溶解于1000g水中……求所加漂白粉的质量(5)某次配置中取一定质量的漂白粉溶解于1000g水中,所得溶液次氯酸钙和氯化钙的物质的量浓度均为0.01mol/L.假设漂白 北宋都监是什么官职 几品 其次如团练使等等? 北宋文武官员的官职是什么?我想知道的是北宋时期文官与武官的官职与品级是什么如果有人知道的请速度回答