In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.A Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with (1) , and that it has a mechanism for (2) graphical files. Display text, display graphics, and (3) hyperlinks ——there’s 99 percent of the (4) value. That’s not to say that the manufacturers didn’t go all - out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can’t wait to delete from your favorites of bookmarks menu Remember when client -side Java applets were supposed to become the preferred (5) , for application development Remember frames and all their nasty side effects 2（）

A. displaying
B. illustrating
C. drawing
D. writing