第一节(共15小题；每小题2分，满分30分)
A
(2018·江南十校联考)
How did the ancient Chinese keep food warm in winter?
Facilities like electric rice cookers and electric kettles make it easy for people to keep food warm. In fact, ancient Chinese people used their own methods of heat preservation.
•“Wen Ding”， ancient rice cooker
The “Wen Ding” unearthed in Nanjing in 1989 is thought to be the oldest of its kind discovered in China, dating back to the Neolithic Age. The craftsmanship of making the “Wen Ding” was developed in the Bronze Age. The bronze Ding from the Shang and Zhou dynasties took on different shapes and structures.
