Nowadays, biologists tend to believe that humans A．occupy the top of the food chain. B．inhabit the same level as anchovies. C．rank above autotrophs and herbivores. D．move up to the trophic level of pigs.
A.occupy B. B．inhabit C. C．rank D. D．move E.
【参考答案】
C 推断题。第三段提到，人类在食物链中大致与猪和凤尾鱼处于同一级别，且人类的排名呈上升状态。第四段提到处于营养级......