Thanks to the Internet different kinds of information in a short time.A. can be learnedB

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。