prep 求解释

疏离无罪

From 1978 to 1988, beverage containers accounted for a steadily decreasing percentage of the total weight of household garbage in the United States

.The increasingly widespread practice of recycling aluminum and glass was responsible for most of this decline.However, although aluminum recycling was more widely practiced in this period than glass recycling, it was found that the weight of glass bottles in household garbage declined by a greater percentage than the weight of aluminum cans.

Which of the following, if true of the United States

in the period 1978 to 1988, most helps to account for the finding?

(A) Glass bottles are significantly heavier than aluminum cans of comparable size.

(B) Recycled aluminum cans were almost all beverage containers, but a significant fraction of the recycled glass bottles had contained products other than beverages.

(C) Manufacturers replaced many glass bottles, but few aluminum cans, with plastic containers.

(D) The total weight of glass bottles purchased by households increased at a slightly faster rate than the total weight of aluminum cans.

(E) In many areas, glass bottles had to be sorted by color of the glass before being recycled, whereas aluminum cans required no sorting.
主要是理解不了意思 里面他怎么计算这个percentage 和recycle 怎么算的不是很理解 o(╯□╰)o
哪位NN帮忙解释下
A中虽然 glass bottle recycle 的比较少但是它质量大所以比重大为什么不对呢

hanshipeng

CCCC

疏离无罪

能详细解释下思路吗？

小桥依梦

同问！顶上去……当时都没看答案就觉得是因为玻璃瓶重……