Cars do cause us some health problems--in fact far more serious( )than mobile phones do.( )为什么填ones 而不是those?两者作代词有什么区别?

Cars do cause us some health problem —in fact more serious ones than mobile phones do 是什么意思 Cars do cause us some health problems-in fact far more serious than mobCars do cause us some health problems--in fact far more serious( )than mobile phones do.为什么填ones? Cars do cause us some health problems--in fact far more serious( )than mobile phones do.A.one B.ones C.it D.those比较疑惑those Cars do cause us some health problems--in fact far more serious( )than mobile phones do.A.one B.ones C.it D.that. Cars do cause us some health problems--in fact far more serious( )than mobile phones do.( )为什么填ones 而不是those?两者作代词有什么区别? Ones代替复数名词和them,和those有何不同?Cars do cause us some health problems--in fact far more serious ___________ than mobile phones do.A.one B.ones C.it D.thoseKey:B air coditions do cause us some environment problems —in fact far more serious _______than cars doa one b ones c it d those答案是b为什么不选those啊? 英语语法those和ones的用法Cars do cause us some health problems--in fact far more serious ___________ than mobile phones do.A. one B. ones C. it D. thoseKey:Bthose和ones该怎么选择,只要方法能选对答案就可以 ____private cars are bringing us convenience,they also cause more traffic accidents and pollution.A.While B.As C.If D.Since选什么理由 25.Cars do cause people some health problems,in fact far more serious _____ than computers do.A.one B.ones C.it D.those cause sb.to do 有cause to do sth Cause us will finally youth losin 一道英语选择题acars do cause us some health problems ---in fact far more serious ---than mobile phones do.a,one b,ones c,it d,those 最近有一首英文歌,歌词是we are the one,the one you left behind,do not tell us now,cause thereis nothing to lose.歌是什么名字? All of us are_____aware of the cause of this failure, so do not make the same mistake again.A. well B. very C. rather D. never. 帮我把这个句子变成被动语态：They will teach us som fench next week. What do cars and planes use?