单项选择题
A．It’s chancy. B．It’s not a real job. C．It’s easier than science. D．It’s not as secure as scienc
A．He is interested in science. B．He changes his mind easily. C．He is not good at painting at all. D．He doesn’t worry about the security of a profession the way his father did
A．allows fans to copy songs once or twice B．allows consumers to burn the song to a CD three limes C．allows consumers to send the song to a portable device twice D．is a compression format that turns music on compact discs into small computer files