某中学给学生布置了一道家庭作业

如何证明用一个平面去截球体的话,所得平面为圆呢?无论过不过球心都是圆吗 大卫英语教口语教的好不好?大卫英语怎么样? you,often,see,your,do,on,grandfather,weekends,to,go连词成句 send back to中back的词性 why did the birds decide to send a messenger to menLong, long ago, as the birds flew over the world, they saw that men had a beautiful thing. It was a bright, burning thing. Men cooked their food and kept warm with it. The birds thought life What the fox 改革开放以来,人们的生活水平越来越高,就像（ ）光读书而不去思考和运用,结果只能是（）填歇后语 she draws as___as her brother.为什么是well 而不用good. A long time ago,in England,some judges often decided whether a man was telling the truth ___ givinghim some dry bread.A.throughB.byC.withD.in为什么选B? the man thinks ____ some time. 有关花的词语（四个字的）打错字了，是描写颜色的词语 花的组词（四个字）花这个字在最后 高一政治“生活与消费”商品生产者为什么要重视商品的质量? 为什么要高度重视消费 _____any change in the date of delivery,please let us know in advance.选项:a、There should be b、 Should there be c、 There would be d、 Would there be单选 我们在街边走时应该小心英文怎么说 提单中port of dischargeg和place of delivery有何区别如题 海运提单中port of unloading,port of discharge ,place of dilivery有什么区别 贸易术语解释,TNT ,FOB point shanghai ,place of delivery.port of loading,port of discharge. port of discharge 和 port of delivery 有什么不同? port of discharge 和 place of delivery的区别 ___ he mangaged to get to the his house on time___ ,he mangaged to get to the his house on time .A Heavily as did it snow B As it snowed heavily C Heavily as it snowed D As heavily it snowed He was so nervous at the meeting that he had to ( )his notes from time to time.A consult B referC make D watch 请翻译句子, 序数词前什么时候加the什么时候不加. 问：小学五年级下学期课文《祖父的园子》讲了些什么?我看了半天也没看懂! book的复数是什么 单项选择和完型填空. 未来一百年有可能发生的科技新发明（至少2条） I missed you take good care his for 小学五年级下第19课我和祖父的园子怎么画出图来 我的故事我发觉我是个没有故事的人,没什么可述说,开头结尾我都想好了,就是差中间部分,也就是我的故事.大家帮个忙,我现在脑子空白,周二需要演讲 高一作文英语作文我的故事、有提纲 急 必修二 急 when i was young at the time over thimeas time went byby the timeas a resultfrom then on nowas i grow older 按照这个写一篇作文我的故事