肝阿米巴病的临床表现与脓肿的位置有关，左叶肝脓肿常表现为（）
A.肩部放射痛
B.腰痛
C.肾周围脓肿
D.胆囊绞痛
E.类似溃疡病症状
参考答案：A
癌胚抗原的特点是在宿主体内抗原性极弱。()
As to the unemployment, the government has taken a series of measures in many areas, _______ I am sure, will benefit the people out of work.
A．which
B．that
C．what
D．where
