题目

---Have you finished writing your essay（论文） ?  ---_______finished but there is still something to correct. A. Sooner or later    B .More than        C. or so          D. More or less   答案：D 设x>0,y>0,A=,B=+,则A,B的大小关系是(　) (A)A=B  (B)A<B  (C)A≤B (D)A>B