What are ____________ going to do on Sunday? [ ]
A. them
B. they
C. their
答案：B
下列哪项不是内脏性腹痛的特点（）
A.疼痛部位不明确
B.疼痛部位接近腹中线
C.常伴自主神经兴奋症状
D.腹痛可因体位变化加重
E.疼痛感觉模糊
