视神经胶质瘤的CT表现A．与视神经分界清 B．钙化多见 C．肌锥外肿块 D．视神经柱

----- Have you informed Tom and Ann that some foreign experts will visit our company at 8:00 tomorrow morning?

------ Yes, I have. But_____ of them asked me to tell you that they would not be able to come.

A．any

B．either

C．both

D．two

张先生，46岁，反复咳脓痰伴间断少量咯血20年，大咯血3天来诊。体检：右下肺可闻及固定湿啰音，有杵状指。胸片示右下肺纹理增粗，可见卷发影。诊断首先考虑（）

A.肺结核

B.支气管扩张

C.慢性肺脓肿

D.慢性支气管炎

E.肺气肿

药物经化学结构修饰得到无活性或活性很低的化合物，在体内经代谢又转变为原来的药物发挥药效，此化合物称为（）

A.硬药

B.前药

C.原药

D.软药

Given the following inventory data about a firm: Beginning inventory 20 units at $ 50/unit Purchased 10 units at $45/unit Purchased 35 units at $ 55/unit Purchased 20 units at $ 65/unit Sold 60 units at $ 80/unit What is the inventory value at the end of the period using LIFO（）

A. $1575.

B. $1225.

C. $1375.

内部员工有着不同的社会背景和资源，调动员工的积极性，请员工主动收集竞争对手信息也是较为合理的途径。