【单选题】Working hours in the United States ____________over the past 20 years.
【判断题】从先秦君子风范的角度来看,司马迁著《史记》的目的和孔子著《春秋》的目的是相同的。()
【单选题】Over (the past) 20 years, the Internet has (helped change) our world in (either) way or another (for the better).
【多选题】计划的具体可操作性是指需要考虑 ( )。
【单选题】Over the past 20 years, the Internet helped change our world in _____way or another for the better.