尿内儿茶酚胺及VMA升高最常见于（）
A.嗜铬细胞瘤
B.甲状腺功能亢进
C.肾炎
D.垂体前叶功能减退
E.严重贫血
参考答案：A
Mary received training in business English for three months, ____she found a job in a big foreign firm.
A．after that
B．after which
C．after it
D．after when
任何工作和项目中风险都是不可避免的，结合自身工作经历谈谈组织活动中的风险管理。
