第7题:[单选题]Since tablet computers and smart phones have(71)interface, many people believe that all home and business computers will eventually have this kind of interface too. A.CRT B.LED C.Touch-screen D.Large screen 参考答案:C 由于平板电脑和智能手机配有触摸屏界面,许多人相信,将来所有家用电脑和商用电脑最终也都会配置这类接口。