【简答题】The little boy still needs the __________20 dollars to do with some things __________. A.remaining;remained to be settled B.remaining;remaining to be settled C.remained;remained to settle D.remain...
【简答题】What is colour? Why do some of the things around us look red, some green, others blue? Colours are really made by reflected(反射)light. We see colour because most of the things reflect light. Something ...