一级域名可以分成两大类，即( )。
A．机构组织性一级域名
B．学术性一级域名
C．国际性一级域名
D．地理性一级域名
参考答案：A,D
环式碎煤机由哪几部分组成？
According to the speaker, as an investor you should do the following EXCEPT ______. A. researching financial pages of the Wall Street Journal B. keeping an eye on the stock market C. consulting an expert on investment D. searching for as much information as possible about the listed companies
