问题补充:
Thanks to the Internet, different kinds of information in a short time.
A. can be learned
B. has been learned
C. can learn
D. has learned
答案:
(答案→)A. can be learned
B. has been learned
C. can learn
D. has learned
解析:句意:由于因特网,(我们)能在短时间内获得不同种类的信息。结合语境可知本句描述的是客观性动作,故用一般现在时态。主语different kinds of information是谓语动作的对象,故用被动语态,选A。