单选题 The United Nations Conferences on the Law of the sea would soon produce an ocean-mining treaty following its ______ declaration in 1970 that oceans were the heritage of mankind.

A、 unanimous
B、 abstract
C、 autonomous
D、 almighty

【正确答案】 A

【答案解析】[解析] 形容词词义辨析。根据惯例，国际组织The United Nations Conferences on the Law of the Sea产生的条约，一般都是达成的一致声明。unanimous(意见一致的，无异议的)符合句意。故答案为A。autonomous“自治的”；almighty“万能的，很强的”。