只有小城镇社会保险缴费经历的女性，可在到达52周岁时申请就业岗位补贴，就业岗位补贴可享受到（）周岁止？
A、54
B、55
C、58
D、60
参考答案：B
等腰梯形两对角线互相垂直，中位线长为a，则此梯形的面积为______．
I had a ______ headache yesterday. I'm feeling even ______ today. [ ]
A. bad, badly
B. badly, worst
C. bad, worse
D. badly, worse
