题目

夏天扇扇子，身上会感到凉爽。这是因为（ ） A . 液化吸收热量 B . 汽化吸收热量 C . 液化放出热量 D . 汽化放出热量 答案：BThese visitors had to ____ at this small and simple hotel for the night because the big hotels were full in the busy season. [     ]A. call upB. pick upC. put upD. make up