(本小题满分12分) 已知集合 A ={ x | x 2 -2 x -8≤0, x ∈R}, B ={ x | x 2 -(2 m -3) x + m 2 -3 m ≤0, x ∈R, m ∈R}. (1)若 A ∩ B =[2,4],求实数 m 的值; (2)设全集为R,若A ? R B,求实数m的取值范围.
【简答题】Our 1_______, Captain Charles Alison, will 2_____ from Portsmouth tomorrow. We shall 3______ him at the 4______early in the morning. He will be in his small boat, Topsail. Topsail is a 5_____ little b...