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写出世界上首台计算机的名称及诞生时间. 孙权劝学的人物介绍 孙权劝学 本文是怎样表现人物的性格特征?详写了什么?略写了什么?鲁肃为什么与吕蒙结友?这样写有什么作用? Radio,television and press _____ of conveying news and information.A.are the most three common meansB.are the three most common meansC.are the most common three meansD.are three the most common means 英语翻译求翻译：Radio and television present the important news of the hour.我想知道present在这里是什么意思, Radio,television and press are the most three common means of conveying news.这句话错哪里了? The quick spread of news is___ ___ ___ ___television and radio programmes around the world(新闻迅速传播是由于全世界范围内都很容易看到电视和广播节目) Radio,television and press are the three means of carrying news of information. 细菌在生长发育后期时体积缩小和细胞壁增厚到形成芽孢的经过叫什么?请迅速作答 孙权劝学写了几件事?通过这些事反映了人物的什么特点?人教版的,和参考答案越接近越好! smile是啥意思 smile什么意思 人的心比宇宙大吗 时间仿佛流水一样一去不复反,我现在才懂得什么才是真正的爱情,你们知道吗? 宇宙大还是人的心大 天真的提问：6西格玛中的‘6’代表什么含义,为什么叫6西格玛,而不叫5西格玛? 人的心,比之宇宙孰大孰小? 人的心真的比宇宙还大吗 人的心思维真的比宇宙大吗 我们知道昆明一年都四季如春We know the weather is warm _ round in Kunming 昆明夏天的天气怎么样?很热.但没有南京热.What's the weather like in summer in Kunming?It's___.But it isn't as hot as in Nanjing 求下列式子的不定积分一、（1-x）／（9-4x^2)dx二、(1／x^2)sin(1／x)dx三、sin2xcos3xdx 对下面这个式子进行不定积分应该怎么做?(cos2x)/(cosx-sinx) 中空纤维超滤膜有哪些家? 英语翻译Telephone,television,radio,telegraph and the Internet all help people communicate with each other.As a result,ideas and news of events spread quickly all over the world.For example,within seconds,people can know the results of an election 什么是中空纤维超滤膜,怎么辨认 are widely they are widely used 中widely修饰什么widely是修饰uesd还是are 还有,they are certainly heroes 中certainly修饰什么? 中三个人的身份和各自的性格特点尽快 向大家问一道很简单的英语根据单词适当形式填空：What _______ they ______ (do) tomorrow?速速回答, they are gojng to meet at 9;30 tomorrow morning用what提问怎么写? what -you-（do）tomorrow morning? i -(see)my grandparents 2 -they-(go)fishing this friday afternoon