xdf20-10/大全-20-10

observer

10. Last year the worldwide paper industry used over twice as much fresh pulp (pulp made directly from raw plant fibers) as recycled pulp (pulp made from wastepaper). A paper-industry analyst has projected that by 2010 the industry will use at least as much recycled pulp annually as it does fresh pulp, while using a greater quantity of fresh pulp than it did last year.

If the information above is correct and the analyst’s projections prove to be accurate, which of the following projections must also be accurate?

(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years.

(B) In 2010 the paper industry will use at least twice as much total pulp as it did last year.

(C) In 2010 the paper industry will produce more paper from a given amount of pulp than it did last year.

(D) As compared with last year, in 2010 the paper industry will make more paper that contains only recycled pulp.（A）

(E) As compared with last year, in 2010 the paper industry will make less paper that contains only fresh pulp.

彻底晕！到底谁是谁的2倍呀？

则么感觉比数学还难？多帮忙，谢谢

elites

1。这题是对平均水平的老美又难度的题，不是所有，所以不应该用American

2。D之所以不对是因为原文没有关于how many paper are made from pulp的信息。原文只说了用了多少pulp。所以，D E都不肯能对。

apply1

I think this is a difficult question for American, so the answer is A.

Last year: fresh pulp= 2*recycled pulp

2010: recycled pulp>=fresh pulp

So we can conclude: in 2010 the paper industry will use recycled pulp>=2*recycled pulp used in last year.