GRE考试

根据网考网考试中心的统计分析，以下试题在2018/6/19日GRE考试习题练习中，答错率较高，为：33%
【单选题】The passage is primarily concerned with discussing


A．how anthropologists ought to explain the origins of the trade relationship between foragers and agriculturalists
B．why it is difficult to measure the amount of time necessary for the disappearance of carbohydrate-rich plant species in the rain forest
C．why a particular account of the unavailability of carbohydrates to rain forest foragers is inaccurate
D．what ought to be included in any account of the effects of forager peoples on rain forest ecology
E．(E) what data are most relevant for an accurate account of the relations between rain forest foragers and agriculturalists