题目

（04年江苏卷）设函数，区间M=[a，b](a<b)，集合N={}，则使M=N成立的实数对(a，b)有                                    (      )(A)0个          (B)1个         (C)2个          (D)无数多个 答案：答案：A  Obama says he is angry about policies that always favor the wealthy and powerful over ______ Americans and insists that opportunities be opened up to all.    A. average          B. intelligent       C. competitive                  D. Original