物理中运用高斯定理求电场强度、磁场强度时什么时候是2pi*r,什么时候是pi*r^2

inner mongolia is in the n____part of china. tens of millions 我看了一个译文是几亿,I'm not sure,who can give me answer?thanks! "tens of millions tens of millions of 等于 thousands of The boy has two soccer balls.改为一般疑问句 we have three soccer balls（2）Anna has a basketball（3）he watches TV every day变一般疑问句 填空 we have to go to the supermarket（ ） these things I have enough money for these school things. I have enough money ＿＿these school things. Wuhan is in the ------ part of China.A.center B.central C.middle D.century To truly laugh,you must be able to take your pain ,and play with it 填介词Fashion models do the show _ the catwalk.Look.Sandy is doing some work _ the fashion show.Most of people don't go to work _ Sunday morning.How much money did you spend _ the coat?_ the fashion show I wore my hair _ a 1990s style.They talked Fashion Show a fashion Everyone _________ Tom was interested in the fashion show 介词填空 everything i do i di it for you歌词Bryan adams 唱的`` 老大的英文怎么写 早期英、法、美资产阶级革命的主要任务是什么?说出英国、法国、美国资产阶级革命的主要任务分别是什么?就可以 英,法,美资产阶级革命分别通过什么途径实现其革命任务的? 黄多多英语怎么学的 It's my life 他们说了什么 英语：We go to the zoo with our parents（划线提问——our parents) "We can write a time table ___our daily life"横线填什么?"We can write a time table____our daily life"当中空白填什么? 5.Although Anne is happy with her success she wonders ________ will happen to her private life.A.选哪个 Leaving,I feel so lonely.翻译 Nancy usually in the park with her parents she usually _________(庆祝)the spring festival with her parents.rose smells so ________(极好的). 3333乘2222+6666乘3889等于多少 34343432432423.2222乘9等于 (Everything I Do) I Do It For You 歌词 everything i do i do it for you高手怎么翻译了 关于感情方面的 that is not a problem是什么意思 only for lonely guy翻译 英语翻译:only~ but sorry~ so... lonely~~