影响乳腺癌预后的最主要因素()
A.病人年龄
B.是否绝经
C.肿块大小
D.手术切除范围
E.癌肿本身生物学特性
参考答案:E
女,44岁,餐后突发上腹刀绞样疼痛,阵发性加重,伴腰部放射、恶心,呕吐胃内容物。为明确诊断应首先选择的检查是()
A.血常规
B.尿淀粉酶
C.弹力酶
D.血淀粉酶
E.肝肾离子血糖
Internet shopping will really _____ when people make sure that it is safe. [ ]
A. take off
B. take up
C. set off
D. set up