这是六年级按比例分配题：宽是长的2/3,可知把长看成3份,宽就是2份.长加宽是5份就是10厘米（而不是20厘米,因为20厘米是两条长加两条宽,这点最容易错的）,所以用10厘米按比例分配.长是=20/2*3/5=6厘米 宽是=20/2*2/5=4...1.Whose book is it?It's not ___book.It's ___.Amy;her Bmine;hers Cmine;her Dmy;hers2.They___some pictures on the wall in the classroom this morning.Aput Bputted Care putting D puts3.I've got a nice watch___my Mum.Afor Bfromj C to D with(1) D（2）D(3)