填空题

Since 1979, China has adopted the significant policy of (11) to the outside world in the foreign economic relations and trade, actively developed the economic relations with countries (12) the world and made the unprecedented (空前的) achievements ever since the founding of the PRC. These have (13) very important roles in promoting international economic exchanges, speeding (14) the construction of China’s socialist modernization, strengthening the ability of self-reliance and contributing to the work of foreign affairs in the new (15) environment.