心理学家斯腾伯格认为，人的认知结构由元成分、操作成分和信息获得成分；3种成分组成，这3种成分相互依存、相互联系，推动认知水平的不断提高。（）

A．完全正确 

B．完全错误 

C．无错误，但不完备 

D．部分错误

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）是（）

A.displaying

B.illustrating

C.drawing

D.writing