試題詳解

23. What was the most unusual feature of the “Sky River”?
(A) It was a glowing body of water suspended mid-air in the sky.
(B) It was a cloud formation with mist and frost mistaken for a river.
(C) It was a rare form of high-altitude rainstorm with flood and mudflow.
(D) It was a mirage caused by light refraction from the highly industrialized society.