垄断性的工资差别都可以通过健全劳动力市场体系来加以消除。
参考答案：错
—I don’t know _____.
—It doesn’t matter, just stay with us please.[ ]
A. when will the train reach
B. when the train will reach
C. when will the train arrive
D. when the train will arrive
嗜铬细胞瘤可发生于（）.
A.腹主动脉前
B.腰椎旁
C.纵隔
D.主动脉旁嗜铬体
E.膀胱
