【单选题】It is a winter night ___he spent with me last night.
【单选题】功利论的主要特征是:
A.
以人们行为的功利效果作为道德判断的基础与标准
【单选题】_____ teaching in a university, he also spent some time teaching in a night school.
【单选题】He spent two hours ______ his homework last night.
【单选题】市场上某种商品的销售出现“供不应求”的现象是由于( )。