若0.3am+1bn﹣1与4a2b5是同类项，则m+n=（）．

根据下面短文的内容判断下列句子的正误，正确的用“A”表示，错误 的用“B”表示。

     Computer technology has become an important part of people's life. This technology has its own

special words. One well-known computer word is Google. It is the name of a popular "search

engine (引擎)" for the Internet. People use the search engine to find information about al- most any

subjcct on the Internet. The people who started the company named it Google because m math google

is a very large number—one hundred zeros follow the number one. When you "Google" a subject, you

can get a lot of information about it.

     If you Google someone, you might find that person's name on a blog. A blog is short for a Web log.

It is a personal web page. Some people write blogs to express their opinions and ideas over the Internet.

Some use them to share their lives with faraway friends or family. Others write blogs to help them deal

with sickness, money problems or to choose movies to see or books to read. Some people add information

to their blogs every day. People who have blogs are called bloggers.

( )1. Google and Blog are two kinds of popular search engines.

(     )2. One can use Google to search the Internet for all information he wants.

( )3. People may use Google to share their opinions or ask others for help.

(     )4. Bloggers ought to add information to their blogs every day.

( )5. From the passage we can infer (推断) that computer technology is changing people's life.

“人口多达百万，早市、夜市买卖昼夜不绝，夜市直至三更尽，才五更又复开张。如要闹去处，通晓不绝……”。材料中的这种景象最有可能发生在

A．秦朝咸阳

B．西汉长安

C．唐都长安

D．南宋临安

A公司最近刚刚发放的股利为3元/股，预计该公司近三年股利稳定，但从第四年起估计将以3%的速度递减，若此时无风险报酬率为6%，股票市场的平均收益率为10%，A公司股票的贝塔系数为2，公司目前的股价为18元，求：
(1)股票的价值；
(2)股票预期的投资收益率。

骨骼系统疾病最常用的影像学检查方法是（）

A.CT、X线平片

B.ECT

C.MRI

D.CT

E.血管造影

企业物流的垂直结构按照自下而上的( )三个层次的协调配合实现其总体功能。

A．管理层、控制层、作业层

B．控制层、管理层、作业层

C．作业层、控制层、管理层

D．作业层、管理层、控制层