the alien was in the museum, I called the TV station.
A. Because
B. Then
C. As soon as
D. While
网友回答
A. Because
B. Then
C. As soon as
(答案→)D. While
解析：连词辨析。Because因为；Then然后； As soon as 一……就；While 当……时候。句意：当外星人在博物馆的时候，我打电话给了电视台。故选Ｄ。
此题考查while引导的时间状语从句表示当…的时候。