GMAT 一道CR,help~
Most geologists believe oil results from chemical transformations of hydrocarbons derived from organisms buried under ancient seas. Suppose, instead, that oil actually results from bacterial action on other complex hydrocarbons that are trapped within the Earth. As is well known, the volume of these hydrocarbons exceeds that of buried organ- isms. Therefore, our oil reserves would be greater than most geologists believe.
Which of the following, if true, gives the strongest support to the argument above about our oil reserves?
(A) Most geologists think optimistically about the Earth’s reserves of oil.
(B) Most geologists have performed accurate chem- ical analyses on previously discovered oil reserves.
(C) Ancient seas are buried within the Earth at many places where fossils are abundant.
(D) The only bacteria yet found in oil reserves could have leaked down drill holes from surface contaminants.
(E) Chemical transformations reduce the volume of buried hydrocarbons derived from organisms by roughly the same proportion as bacterial action reduces the volume of other complex
hydrocarbons.
OA是E,我選得C,搞不懂E到底怎么就支持結(jié)論了?
我覺得E說的是化學(xué)變化減少了被埋有機(jī)物的hydrocarbon規(guī)模,減少比例和細(xì)菌對hydrocarbon減少的規(guī)模相同.E里面好像沒有提到organism和bacterial轉(zhuǎn)化成oil啊.我不明白這個(gè)和轉(zhuǎn)換比率有什么關(guān)系?