2022年普通高等学校招生全国统一考试·金卷(一)1英语试题

21.When did the Chinese begin to use natural ice to keep food fresh?

A.The Zhou Dynasty.

B.The Pre-Qin Dynasty.

C.The Ming Dynasty.

D.The Qing Dynasty.

22.Which of the following has the same function as the refrigerator today?

A.Icehouse.

B.Ice container.

C.Bed-mat.

D.Porcelain pillow.