单选题 The American society is _____ an exceedingly shaky foundation of natural resources, which is connected with the possibility of a worsening environment.无

A、 established on
B、 affiliated to
C、 originated from
D、 incorporated with

【正确答案】 A

【答案解析】句意：美国社会是建立在一种极不稳定的自然资源基础之上，这与环境不断恶化的可能性有关。本题考查的是短语辨析， be established on…建立在……之上，符合题意，故为正确答案。 be affiliated to…归属。 be originated from…来自于。 be incorporated with…被整合。