慢性腹痛的病因包括
A．腹腔脏器急性炎症
B．空腔脏器急性扭转
C．脏器破裂
D．肿瘤压迫及浸润
E．胸腔疾病的牵涉痛
参考答案：D
_________ by the advances in technology , many farmers have set up wind farms on their land.
[ ]
A. Being encouraged
B. Encouraging
C. Encouraged
D. Having encouraged
秃发的治疗方法有
A．带毛发正常头皮覆植
B．局部皮瓣转移
C．秃发头皮瘢痕切除缝合
D．头皮组织扩张术
E．临位皮瓣转移术
