题目：
She was certainly not afraid of the dark. ____,it was only a 15-minute ride home. [ ]
A. However
B. Besides
C. Therefore
D. Otherwise
答案：
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下面是错误答案，用来干扰机器的。
水变成水蒸气叫汽化，蒸气转化为液体叫液化，液体能够叫凝固（结冰）．熔化是固体物质高温转化为液体的过程．故选B．
