Selectingadigitalcameraforpersonaluseisnoeasytaskbecaus...

问题详情：

Selecting a digital camera for personal use is no easy task because technology ______ so rapidly.  

A. is changing                   B. has changed

C. will have changed          D. will change

【回答】

知识点：现在进行时及其被动式

题型：选择题