【简答题】Comprehension exercises I. Complete the followingsentences based on the information from the text. 1 Before 1896, gymnastics and modern sports had ( ) objectives.
【判断题】Somethingthing must be wrong with my car. 下面的回答是否正确: Whtat’s up?
【单选题】关系模式R(A1,A2,A3,A4,A5,A6),如果A1→(A3,A4); (A2,A4)→A5; (A3,A5)→A6,则R的候选键为_________。
【单选题】关系模式R(A1,A2,A3,A4,A5,A6),如果A1→(A3,A4); (A2,A4)→A5; (A3,A5)→A6,则R的候选键为_________。
【多选题】就其是否关涉现实政治或者制度变革而言,网群事件可分为网络型政治事件和网络型社会事件。那些属于网络型政治事件()
【判断题】Somethingthing must be wrong with my car. 下面的回答是否正确: What’s up?
【单选题】Alex: Do you like puppies? Lisa:____________.loving puppies