Mr. Wang _____ gets up early. So he is ______ late for work.
A:always; always
B:never; never
C:always; often
D:always; never
已知椭圆:x24+y2b2=10<b<2,左右焦点分别为F1,F2,过F1的直线l交椭圆于A,B两点,若|BF2|+|AF2|的最大值为5,则b的值是____