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