C3合作方的标注由（）的客户经理进行操作。
A.主办机构
B.辅办机构
C.协办机构
D.以上都是
参考答案：A
As there was not much chance to find good jobs in their hometown, a lot of young people tried
to ________ their fortune in cities.[ ]
A. find
B. find out
C. seek
D. look
胆囊癌MRI检查主要的表现为（）
A.淋巴结转移
B.肿瘤侵犯肝脏
C.胆囊壁增厚和肿块
D.梗阻性胆道扩张
E.合并胆结石
