题目: 若集合M={x|x2-2x≤0},N={x|-1≤x≤2},则( )A.N⊊MB.M∪N=NC.M=ND.M∩N=∅ 答案: M={x|x2-2x≤0}={x|0≤x≤2},N={x|-1≤x≤2},∴M∩N={x|0≤x≤2},M∪N={x|-1≤x≤2}=N,故选B.
题型:选择题 – I met Jackson at our school theatre. Can you imagine_____ well-known _____ an expert on ENT?A.his becoming; asB.to become; asC.his becoming; forD.to become; for 查看答案