A. By staying in hiding places and eating very little. By seeking food and shelter in people’s houses. C. By growing thicker hair to stay warm. D. By storing enough food beforehand.
A. To stay safe. B. To save energy. C. To keep company. D. To protect the young.
A. 一线员工 B. 管理人员 C. 旅客 D. 指挥人员
A. 陶瓷 B. 耐热玻璃 C. 耐热塑料 D. 不锈钢
A. 对 B. 错
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