QQ Registration and Usage.ppt QQ Registration and Usage.pdf When you want to have a direct communication with your friends or colleagues abroad. Instant chat tools such as MSN or QQ are very convenientways for you to send messages,do inst ...
Today, I read an article about how to read literature, of which the author told hisexperience that he marked the read papers on the pdf file, then he could know next time that papers had been read. Then I download one pdf editor ( FoxitPdfReader )from th ...