下列各组数中，相等的一组是 [ ]
A．|﹣3|和﹣（﹣3）
B．﹣1和（﹣4）+（﹣3）
C．32与23
D．﹣32与（﹣3）2
答案：A
下列哪项肿瘤标记物最常用于卵巢上皮性癌的诊断
A．酶标记物
B．雌激素
C．hCG
D．CA125
E．AFP
—Oh, sorry, what did you say just now?
—I asked _______.[ ]
A. Where he comes from
B. where did he come from
C. where he came from
D. when did he go
