设
则F(x)在x=0处[ ]
参考答案：C
解析：另一方法，按分段积分，得到F(x)的表达式，然后再讨论F(x)在x=0处的连续性、可导性
Facing this ________ problem, I found myself ________ about how to work it out.
A．puzzled; puzzled
B．puzzled; puzzling
C．puzzling; puzzling
D．puzzling; puzzled
产后病的病机特点是（）
A.亡血伤津
B.元气受阻
C.瘀血内阻
D.外感六淫或饮食房劳所伤
E.多虚多瘀
则F(x)在x=0处[ ]
则F(x)在x=0处[ ]