为什么说look it up 却说look for it

为什么说look it up 却说look for it 为什么说 look it up 而不说look it for look up it 还是look it up set up,put up ,look up 的区别look up 为什么说The doctor looks up the girl? look it up Look it up!翻译 if you forget something you could look it up老师画的是look it up 为什么? we love our class so much that we even___ a song adout it A give up B use up C make up D look up最好把中文写上,说下为什么 I don't know his phone number.Will you please___in you address book for me?A.look up it B.look it up C.look for it D.look at in选哪个?为什么? mamma mia 歌词中文意思歌词：I've been cheated by you since I don't know when So I made up my mind,it must come to an end Look at me now,will I ever learn?I don't know how,but I suddenly lose control There's a fire within my soul Just one loo if the launch in 2005 is successful.China will be the third country_____its astronauts into space afer Russia and US.A.send B.sends C.sending D.to sendl don`t know Sam`s telephone number.will you please___in you address book for me?A.look up it B.loo this dictionary is very useful,it has______many problems about idiom for mea.look up b.kept up c.taken up d.cleared up选什么,为什么 查字典用英语怎么说?为什么不能说look up a dictionary? 为什么look up后才加imformation而refer to 不能?而且 好像只能说refer to a dictionary 不能用look up a dictionary? look it up 和 look up it有什么区别啊怎么用? look up 不是动副短语吗?为什么说look up the dictionary 而并非look the dictionary up难道有例外?别的动副短语也有例外吗? fall和fall down有什么区别?为什么有的时候说water fall from the clouds有时却说it fall down from the clouds? look up 和look for有什么区别查电话簿，为什么用look up?