Which of the following statements about China’s foreign relations are true? _______

A、As a permanent member of the United Nations Security Council, China has been playing an increasingly important role in the international arena.
B、China now has diplomatic relations with more than 160 countries and engages in economic, trade, scientific, technological, and cultural cooperation with more than 220 countries and regions.
C、In the past five decades China has overcome difficult international problems one by one in part thanks to its flexible and practical strategies.
D、As for foreign policy, China pursues an independent and peaceful foreign policy directed toward peace.