Question

—        do you know so much about the UFO?
—I usually get the information by surfing the Internet.

A．How

B．What

C．Which

D．Where

Answer 1

A

How如何，怎樣；What什么；Which哪一個；Where在哪兒。根據下文，我通常通過上網來獲得信息。可知上文問的是，關于飛碟，你是如何知道這么多的？故選A。