单项选择题
A．Lyne was a headmaster. B．A lot of kids had chains around their necks. C．I was constantly telling them to put inside their shirts. D．They were house keys.
A．Because it was easy down. B．Because it was very expensive. C．Because it was not advanced enough. D．Because it was not as big as the main computer.
A．reading carefully B．reading quickly and not word by word C．reading by repeating some important words D．reading more than one article at the same time