有A、B、C、D的哥村庄,现准备建一个变电站向四个村庄供电,为了使架设的线路最短,问这个变电站应建在何处

对于什么是一个完美的教学法（大家）没有形成共识

解题思路：根据“孪生质数”的定义，找出相邻并且相差2的质数进行书写即可．

根据“孪生质数”的定义可以写出如下：
3和5，5和7，11和13，17和19，29和31．

点评：
本题考点： 合数与质数．

考点点评： 此题的关键是掌握什么是质数，然后找出相邻并且相差2的质数．

《母亲的风景》阅读答案 文章来自：中小学作文阅读答案网 母亲的风景朱成玉 “①母亲的糖尿病越来越严重,导致她的视力迅速下降,多方医治都无济于事.看到我们愁容满面,母亲安慰大家：就算看不见东西了也没啥,不耽误吃不耽误喝,没啥不好.” “②...

你说的应该是“我期待”
张雨生&陶晶莹
我期待
作词：张雨生 作曲：张雨生
（张）我期待 有一天我会回来
回到我最初的爱 回到童贞的神采
（陶）我期待有一天我会明白
明白人世的至爱 明白原始的情怀
（张）我情愿 分合的无奈 能换来春夜的天籁
（陶）我情愿 现在与未来 能充满秋凉的爽快
（陶）SAY GOODBYE SAY GOODBYE
前前后后 迂迂回回地试探
（张）SAY GOODBYE SAY GOODBYE
昂首阔步 不留一丝遗憾
（张）我情愿 分合的无奈 能换来春夜的天籁
（陶）我情愿 现在与未来 能充满秋凉的爽快
（张）SAY GOODBYE SAY GOODBYE
（合）前前后后 迂迂回回地试探
（陶）SAY GOODBYE SAY GOODBYE
（合）昂首阔步 不留一丝遗憾

不幸隔段时间的传来.在前年那位表弟也走了,本来四年级时也能走路,但五年级后不能再走了,也跟着他的哥、姐、一样远离了这个世界!
这就是我外婆家中近亲结婚的例子.愿远去的亲人安息.然而令我一直不明的是,到底他们患上了何种的遗传病.
Bad news came one piece after another.at intervals.The year before last the younger female cousin died.He was still able to walk in his year 4 but unable in his year 5.Then following him to the other world were his elder brother and his elder sister.
The above were examples of intermarriage / consanguinity marriage that happened in my mother's mother's family.May those dead rest in peace !I am ,however,still puzzled what sort of genetic disease at all they were suffering from.

南拳妈妈-重返荣耀.wma
屠洪刚-精忠报国.mp3
张震岳-等我有一天.wma
张震岳-认输.mp3

Next I will sing a familiar song,please guess who I am.

清晨我站在清清的牧场
看到山鹰披着那霞光
像一片祥云飞过蓝天
为藏家儿女带来吉祥
黄昏我站在高高的山岗
盼望铁路修到我家乡
一条条巨龙翻山越岭
为雪域高原送来安康
那是一条神奇的天路 哎

di ge 出租车司机.你是哪里人

Campus Life
Our campus is peaceful in the morning.In a while,students come to school,most of them walk to school,some ride on bicycle and a few by car.The campus liveliness now.
Look,a few junior students clean the path of lawn.The reading begins at 7 o'clock,in corridor and classroom,students all read their books serious in teacher's tutorship.After second class,it's time for morning exercise.Every class all line orderly in playground,they start exercise in the music.Nine-class students also start their long-distance running exercise on the raceway,look,how they bouncy!
But it's different for break exercise time on Thursday,the school hold "Sunshine English" activity usually at that time Because our school is good at English.Students all very happy when this time come,they listen the host explanation in fluent English in the English music one playground,then they begin active communicate each other,some of them will be invite to singing or dancing,smile appears everyone's face."Sunshine English" make us learn more in the laugh,improve our ability and make our campus life become rich and colorful.
I like our campus and like our campus life more.
翻译：
校园生活
早上,我们的校园是恬静的,不一会儿,同学们就陆续来了,大多是步行,有的骑自行车,少数乘着小汽车.校园开始热闹起来.
看,草坪边的小路上,几位低年级的同学拿着扫把打扫着,7点左右校园里响起朗朗的读书声.走廊上、教师里,同学门都拿着课本在老师的辅导下,认真的早读.
第二节课后是早操时间,只见各班排着整齐的队伍,来到操场,在音乐声中,开始做早操.而跑道上,九年级的同学们也开始了他们的场跑锻炼,瞧,他们个个多有精神.
但到了周四,课间操时间就不同了,通常这个时间我校举办“阳光英语”活动.因为我校以英语见长,每当这一天,同学们都很高心.在操场上同学们在阳光英语”让我们在笑声中获得了知识,提高了能力.是我们的校园生活变得更加多姿多彩.
我喜欢我们的校园,更喜欢我们的校园生活!

[sài] 边界上险要地方：要～.关～.～外.边～.～翁失马.
[sāi] 堵,填满空隙：堵～漏洞.～尺.～规.;堵住器物口的东西：活～.
[sè] 义同（一）,用于若干书面语词：闭～.阻～.搪～.～责.顿开茅～.
塞翁失马[sài wēng shī mǎ]
解释：塞：边界险要之处；翁：老头.比喻一时虽然受到损失,也许反而因此能得到好处.也指坏事在一定条件下可变为好事.
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您好,答题不易
如有帮助请采纳,谢谢

设这个多边形的边数为n,
则有（n-2）•180°=360°+540°,
解得n=7．
∵这个多边形的每个内角都相等,
∴它每一个内角的度数为900°÷7= 900°/7．