英语 九年级 选择题 较难

询问与解释科学现象 — 英语选择题

冀教版·英语 Unit 6 Looking into science AI 三重审校通过

题目
A paper spiral hangs above a cup of hot water. It turns, but stops turning when the water cools. Why? A. The hot water pulls the spiral down. B. Warm air rises and pushes the spiral. C. The water’s color makes the spiral turn. D. Cool air rises and pushes the spiral.