由验收部门填制的有关收到商品的名称、种类、数量、供应商名称和订单号等资料的凭证是：
A．验收单
B．订购单
C．订货合同
D．借项通知单
参考答案：A
Mary is said _____ in the supermarket for 5 years, but I don't know why she resigned last month. [ ]
A. to have been working
B. work
C. to be working
D. to have worked
患者女，70岁。发现左乳约3cm×4cm肿块1周，检查雌激素时，雌酮（E1）明显升高，而雌二酮（E2）、雌三酮（E3）正常。
应选择的手术方案是（）。
A.乳癌根治切除术
B.扩大乳癌根治切除术
C.单纯左 * * 切除术
D.改良乳癌根治切除术
E.姑息性手术+化学治疗+放射治疗
F.单纯肿块切除术
