申論題

二、It has been about 30 years since the establishment of the World Trade Organization (WTO). The operation of the WTO Appellate Body under the dispute settlement mechanism is on the stage of shutdown. Some WTO members have proposed the "Multi-Party Interim Appeal Arbitration Arrangement (MPIA)" as a temporary alternative for the appellate procedure. Please analyze the main controversies caused by the WTO dispute settlement mechanism, and discuss the MPIA’s goal and procedure.（25 分）