世界上最难学的学科

铁不锻炼不成钢下一句? “铁不锻炼不成钢”下一句是什么?是名句 铁不锻炼不成钢下一句是什么? 如果你是鞋店的老板,你比较关心什么? 鞋店老板去进货时,他必须了解近期各种鞋尺码的销售情况.这里就运用了统计量中“众数”的知识. 鞋店老板或运动员帮忙看下!我穿41码的新运动鞋：刚好一脚我穿42码的新运动鞋：脚后跟能勉强放进个手指头!但是走路有点不跟脚!我该买多少码的?41码脚尖刚好碰到鞋尖! They often (m )together.There are (m )than three showers in it .Simon like white (b )so everything in the bathroom is white. 某鞋店老板先在广州以某双45元的价格购进某种牌子的鞋15双,后又以每双40元的价格购进该鞋30双如果在销售鞋子时,想获得百分之15利润,那么每双定价至少应为多少元?一元一次 众数在帮助鞋店老板进货时有什么意义? 写完整,正确,就给30财富Tom:Lily,() ()Mr Xu() is my teacher.Lily:（）,Mr XuTom:Mr Xu,This is my().()name is Lily.Mr Xu:Hello,Lily.Nice to meet you,().Tom:lt's time() () now.Goodbye,Mr XuMr Xu:Bye.() () tomorrow是15财富 外国人写的关于晚清的经典历史书籍有哪些还有描写第一次或第二次鸦片战争,并对战争爆发的原因、双方实力对比做出比较详细研究的史书有哪些啊,谢谢了 请详细解释一下DNA与RNA 帮我完成吧.剩下的财富值20都给你们了! 弱电里面4×Cat5e-2×FPC各表示什么意思那1×SYWV75-5+2×Cat5e-2×PFC各表示什么 英语补考题目……求高人解答……是补考……拜托了……II．选择填空:（每个2分,共40分）6.Some people do exercise by dancing ________ music.A.in \x05\x05\x05\x05B.on \x05\x05\x05\x05C.at \x05\x05\x05D.to7.It is no use __ 弱电图纸上的25*2UTP CAT5E 是不是标错了? 本人补考 问几道英文题目一、翻译1.only child2.a sense of humor3.badly off4.close friends5.Oriental Pearl TV Tower6.Inner Mongolian Grassland7.pack...up8.be supposed to9.His shoes were well-polished and his clothes were quite smart10.I`d 英语要怎么补考啊? 我们所吃的葱的白茎处的细胞内有叶绿体吗? 人教版的生物书上只有动物细胞培养,请问有没有动物组织培养?与动物细胞培养的区别在哪儿 英语翻译How do inventions affect people's life?There have been many great inventions,things that changed the way we live.The first great invention was one that is still very important today——the wheel.This made it easier to carry heavy things 怎样培养对英语的兴趣? 英语翻译30 帮忙翻译下:In addition, you can also approach friends, family, a counselor, teachers, books.帮忙翻译下:In addition, you can also approach friends, family, a counselor, teachers, books, or the internet, etc. to obtain ideas for solutions.这 A:Good moming.1____B:Yes,I want a shirt for my son.A：Here are many shirts.2_____B:He likes yellow.A:Look at this shirt,please.Do you like it B:3________.Do you have a small one A:Yes.What about this one?B:It's nice.I'll take it 4______A:20 yuan.B:I A:Good moming.I____B:Yes,I want a shirt for my son.A：Here are many shirts.2_____B:He likes yellow.A:Look at this shirt,please.Do you like it B:3________.Do you have a small one A:Yes.What about this one?B:It's nice.I'll take it 4______A:20 yuan.B:I I want a T-shirt ( ) my son,please. A.of B.is C.for 路遥知马力,路遥知马力,日久见人心用英语怎么说啊 “学如逆水行舟不进则退”的下句是什么 ／学如逆水行舟不进则退／下联 "路遥知马力,日久见人心"用英语怎么翻译?请高手指教. 路遥知马力日久见人心英文