Tina sold her car __________ because the car was too old and broken .
A:at a high price
B:at a low price
C:at an expensive price
D:at a cheaply price
①日本是一个岛国,国土面积狭小 ②日本工业高度发达,是能耗大国
③日本煤、石油等能源缺乏 ④日本人口众多,劳动力充足