【单选题】Working hours in the United States ____________over the past 20 years.
【简答题】Over the past 20 years, retail sales in China have increased nearly ______ every year, to some $628 billion in 2004— it the third-largest market on earth.
【单选题】In my opinion standards of workmanship have ______ over the past 20 years.
【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 ( )。
【简答题】Over the past 20 years, the Internet helped change our world in _____way or another for the better. A.any B.one C.every D.either
【判断题】凯恩斯主义经济周期理论.货币主义经济周期理论以及理性预期经济周期理论都认为总需求的变化是导致经济周期发生的原因。
【单选题】Over the past 20 years, the Internet helped change our world in _____way or another for the better.