OG5 阅读 Q28

Choice B is the best answer. The passage states that the authors of the study comparing conventional and organic farming have come to the conclusion that an "ideal global agriculture system" would "borrow the best from both systems" (lines 80-82,"with ...the"). The quote from Jonathan Foley in (lines 84-97,"The...etc") indicates that this ideal system would take into consideration many different factors, including the nutrition and calories offered by specific types of foods as well as different geographic, economic, and social needs.  
Choices A and D are incorrect because the passage makes it clear that the "ideal global agriculture system" would give consideration to multiple factors, not that it would focus mainly on productivity (choice A) or nutritional value (choice D). Choice C is incorrect because Foley states that the ideal system would take economics into consideration but does not indicate that farmers' economic interests would be weighed against consumers' needs.