学霸求解答_百度知道
学霸求解答
来自安徽大学
解：对原式进行平方可得：
b/a+2+a/b=2+(a^2+b^2)/(a*b)=2+2*((a+b)^2-2ab)=2+2*(4-1)=8
再求算术平方根可得，原式=2倍根号2
徐仁杰&&教师
郭勇亮&&学生
刘智勇&&教师
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你的回答完美的解决了我的问题，谢谢！
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The Pros and Cons of Computer电脑的利弊Computer is increasingly popular in people’s daily life.The number of computer in every family is more than TV set.Some people think it is so great that they all regard it as a gift from the heaven.However, some people consider it brings more disadvantages than advantages.In my opinion, both opinions are correct, but if we can use computer in a proper way, its advantages are superior to disadvantages.I have several reasons.在人们的日常生活中电脑越来越受欢迎。每家每户拥有电脑的数量要比电视机多。有些人觉得电脑真的很棒，所以他们都把他当作是上天赐予他们的礼物。然而，有些人则认为它所带来的弊端要比好处多。在我看来，这两个观点是正确的，但如果我们能够恰当地使用电脑，它的优点是会比缺点多的。理由有几点。
On the one hand, computer makes human beings’ life become easier. People can do many things that they can’t do before.They can read newspaper without buying it, only sitting in front of their computer, clicking mouse to open website.Shopping online, watching movies, listening music and play computer games are the common things that people often do by computer.But without computer, they can’t do all these easily.In addition, computer is also very helpful for study and work.People can have classes and work on it.一方面，电脑使人们的生活变得更容易。 人们可以做很多以前不能做的事情。他们可以不买报纸，只坐在电脑前，点击鼠标，打开网站就看到新闻。网上购物，看电影，听音乐，玩电脑游戏，都是人们常常用电脑做的事。但是没有电脑的话，他们则无法轻易地做到这些事。此外，电脑对他们的学习和工作也是很有帮助的。人们在电脑上上课，工作。
On the other hand, computer has so many attractive things that some people will be addicted to it.Some of them may busy finding funs on it, and then ignore their real duty, such as, study and work.As a result, it will have great bad effect on their future.另一方面，电脑有许多吸引人的东西，有些人会对它上瘾。有些人可能会专注于在电脑中寻找乐趣，而忽略了真正任务，例如，学习和工作。结果，电脑就会对人们的未来有着不良影响。To sum, computer has advantages and disadvantages.But if people can control themselves to use computer properly, it is useful for their whole life.总的说来，电脑有优点也有缺点。但如果人们能够正确地使用电脑，电脑对他们的一生都是有用的。
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你的回答完美的解决了我的问题，谢谢！
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　As a product of modern computer and the Internet, online games have become very popular among college students. Many students have enjoyed great pleasure and satisfaction from these games. But as we see, some students lacking self-discipline are too much indulged in these games so that their health and academic performances are affected. This phenomenon has caused much worry from the teachers and parents。　　However, some others argue that online games are not always harmful. They can train the ability of youngsters to respond to things quickly. Moreover, they can stimulate their imagination and their interest in computer science. More importantly, it does bring college students much pleasure and release their pressure greatly。
There is a wide spread concern over the issue that should we learn English on Internet .The opinion concerning this hot topic is varies from person to person ,However the majority of people hold the view that we should learn English on Internet ,There are two factors contributing their attitudes as follows:First It's a easier way to learn it better,Second,On the Internet we can see a lot of knowledge about English ,It also can widen my horizon and broden my mind ,But different people have different views ,some people believed that we should not learn English on Internet ,On one hand ,It not very formal ,On the other hand wo will attract by other things .So it goes without saying that we should not learn English on Internet.As far as I am concerned ,we should learn English on Internet ,Not only wo should keep the speed of our world ,but also we must learn the new knowledge ,The more you learn the better you future are ,Do as well as you can today ,tomorrow you will be better!
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1元妃省亲本来是一件大喜事，应该是人人欢天喜地，个个笑逐颜开，但从书中描写看来，似如生死别离一样，“垂泪”，“呜咽对泣”，“垂泪无言”，“忍悲强笑”，“又哽咽起来”，“哭泣一番”，“含泪启道”，泪如雨下，“满眼又滴下泪来”，“哽噎难言。”贾母、贾政、王夫人、元春等人为什么这样伤心哭泣呢？书中写得明明白白：“皆有许多话，俱说不出来，只是鸣咽对泣而已。”元妃一言道破了皇宫耀眼的光环──“那不得见人的去处。”什么东西是见不得人呢？那就是皇宫的阴森、血腥、残忍的后妃们悲惨的生活遭遇。
2看红楼梦的应该知道这一段，先说赵姨娘，是贾政的爱妾（不宠爱她，怎么能生下一儿一女，还都长大了），是探春和贾环之母。王熙凤，是贾琏之妻，贾政的侄儿媳妇，按照现代的说法，赵姨娘还算是王熙凤的小婶子呢，可是看到王熙凤对赵姨娘啥态度没有？敢堵在赵姨娘的门口，对她指桑骂槐，说她没资格教育贾环，贾环可是她的亲生儿子。但是在王熙凤眼里，赵姨娘还是个奴才，哪怕她再生仨儿子，她都是个奴才，比她晚一辈的侄儿媳妇都能收拾她。更不用说王夫人了。
赵姨娘是作为家生子，给贾政作了姨娘的。说是姨娘，其实这个姨娘的身份，比正经的妾室还要低。不知楼主注意到了书中的一个细节了吗？贾元春让宝玉和姐妹们一起住到园子里去，贾政将宝玉叫去教训了几句，当宝玉进屋时，还是赵姨娘打起了帘子。从这个细节上，就可以看出，赵姨娘虽是半个主子，但换句话说，她在贾母贾政王夫人甚至宝玉和姐妹们面前，仍然是奴才，不然，为什么探春叫她“赵姨娘”而不是娘呢？这就是当时的礼教。
第三题你手挡着了。。看不见
能不能告诉我最后一题
唉，不好意思哈，出去了刚回来，，还需要呢？
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你的回答完美的解决了我的问题，谢谢！
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didn't gets read is called heart degan picked9 didn't do 10didn't watch
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出门在外也不愁}