第30题: [单项选择]The American society is ______ an exceedingly shaky foundation of natural resources, which is connected with the possibility of a worsening environment. A. established on B. affiliated to C. originated from D. incorporated with 参考答案:A 答案解析:[试题分析] 奉题为动词短语词义辨析题。
[词义辨析] established on意为“建立在(……基础上)”;affiliated to意为“隶属于”;originated from意为“起源于