Now the Internet is a popular channel the public voice their opinions and show their strength.
A. by that
B. through which
C. through that
D. by which
网友回答
A. by that
(答案→)B. through which
C. through that
D. by which
解析：考查定语从句。句意：现在网络是一种流行的渠道，通过这种渠道，公众提出他们的建议并展示他们的力量。通过渠道through a channel，所以选B。