问题 单项选择题

The major goal of USB was to define an external expansion bus which makes adding (70) to a PC as easy as hooking up a telephone to a wall-jack. USB 2.0 is an evolution of the USB 1.1 (71) , providing a higher performance interface.

A.peripherals

B.outside

C.inside

D.beside

答案

参考答案:A

解析:Peripherals意为“外围设备”。

单项选择题
多项选择题