重心向量

形容鸟的叫声的成语4个还有,心脏是比喻地势险要的交通要道还是比喻中心要害部位?kuai !!!!!!!!!!!!!!! 形容鸟的叫声的成语如有的在大声的歌唱 果园里桃树比梨树少25%,梨树比桃树多60棵.桃树有多少棵尽量用算术方法 果园里桃树的棵树比梨树少五分之一,梨树的棵树比桃树多几分之几? 果园里有桃树60棵,是梨树棵树的5/4.梨树有多少棵? 果园里有桃树60棵,比梨树多1/4.梨树有多少棵? 果园里有桃树300棵,梨树的棵树比桃树少五分之一,果园里有梨树多少棵? people in the restaurant were ----- .they were happy we were there though they were busy.A.nice and kind B.nice or kind C.kind but nice D.kind not nice There were already five people in the car but they managed to take me as well.It( ) a comfortable journey.A.can't be B.shouldn't beC.mustn't have beenD.couldn't have been为什么选D 其他三项为什么不对? There were already five people in the car but they managed totake me as well.”“It________ a comfortable journey.”A．can't beB．shouldn't beC．mustn't have beenD．couldn't have been求详解 日本 经济类型：___________________特点：__________,对外进口原料和燃料,出口工业品.原因：________________________发展的有利条件：________________________________________________ 日本资源为什么依赖进口?急, 我想找初一地理下册日本的教学视频谢谢 日本地震引发的海啸对那个岛影响最大?我认为是北海道岛（因为北海道有著名的渔场、受海啸的影响）可同学们认为是本州岛（本州岛最大,所以受海啸影响大） 到底是那个对的、顺便说明 果园里有桃树60棵,比梨树多4分之一.梨树有多少课 果园里有桃树60棵,梨树是桃树的5分之4,梨树多少克 果园里有60棵桃树,梨树比桃树少五分之一梨树有多少棵 I like apples,too怎么划分句子成分?too作什么成分? 连词成句 were,meat,some,dinosaurs,fierce,and,ate Some dinosaurs were fiercer than tigers.（同义句 Tigers were not ___ ___ ___ some dinosaurs. Some dinosaurs were very small, like chickens.paraphrase Some dinosaurs were not as small as chickens.用英语来解释句子用英语来解释句子 Some dinosaurs were___and ate___. 把"小鸟在枝头鸣叫"改成比喻,拟人句. 关于语文“小鸟在枝头鸣叫”改为拟人句的问题通常我们都是改为“小鸟在枝头唱歌”今天我偶然看到妹妹的作业上“一只小鸟在枝头悲哀地唱挽歌”就想起这句话“一只小鸟在枝头悲哀地 走进这片树,鸟儿鸣叫,露珠晶莹改为拟人句 1.亚洲地跨 带,带,带.2.亚洲的气候特点是 、 和 .3.米亚康被人们称之为北半球的“ ”.4.乞拉朋齐是世界的 ,这是由南亚的 造成的.5.我国东部的气候类型有 、 和 .6.我国的青藏高原属于 气候, 树林中的小鸟飞来飞去改成拟人句 1.说说你看过的电视节目中,哪个电视台的哪些节目与地理有关?包含了地理知识的哪一方面或几方面?2.设计‘‘家乡一日游’’方案（包括旅游景点的选择、景点介绍、旅游路线交通方式、日 意大利咖啡壶（蒸汽式）用法普通的咖啡壶,不是电的. 昨天看到一个咖啡馆写着italy's, 咖啡搅拌棒的正确用法就是一头是个球 另一头像船桨 ,哪头用手拿?最好能再解释一下