(3) The mass ratio of C, D and O in white sugar (C3 1D- 1O33) can be 0: (trinity× trinity):1/kloc.

(1) Let the mass of protein in this box of yogurt be X;

You .48g = x x 3 6%

Answer? x = 3g

∵ 3g > I.6g。

It is qualified yogurt;

So the answer is:

(3)7 1:3 l:88；

( 1) 3; Yes