下列哪些属于第一性的法律关系
A. 依法登记结婚的婚姻关系
B. 因订立抵押合同而成立的抵押关系
C. 因违法拘留产生的国家赔偿关系
D. 因出生产生的父母子女关系
Since the US economy is based on free enterprise, there is little government involvement in the economy.
A. 对
B. 错
As the first country to have entered the "post industrial" society , the US has a manufacturing industry unrivalled by any other country in the world.
A. 对
B. 错
In the 18th century, the New England colonies specialized in producing tobacco from plantations.
A. 对
B. 错