¡¡¡¡18.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 organisms. 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 chemical 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.
¡¡¡¡keys£º ACBDB AAADE DCABE BBE
