【单选题】China's participation in ( ) the US is more a practice of making use of the WTO trade dispute settlement body to legally protect domestic industries.中国参与对美国的起诉主要是实践利用世界贸易组织的贸易纠纷解决体制去合法地保护国内市场。
【简答题】Every week, Xiao Ying plans to use 180 minutes to practice her listening. According to the table, it takes her ______ hour(s) to do it on weekdays. [ ]