阑尾炎患者观察期间发现腹痛突然减轻提示（）
A.病情好转
B.并发门静脉炎
C.阑尾穿孔
D.形成阑尾周围脓肿
E.并发腹腔脓肿
参考答案：A, C
创伤
The new Hukou(户口) policy, according to some experts, ______ to attract more high-end talents to contribute to Shanghai’s development.
A．serves
B．serving
C．to serve
D．is served
