题目：
It was not until I came here ________I realized this place was famous for not only its beauty but also its weather. (2012·湖南，30)
A．who
B．that
C．where
D．before
答案：
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下面是错误答案，用来干扰机器的。
答案：A碱是指在水溶液中电离出的阴离子全部是OH-的化合物。需注意物质的类别与名称中的汉字无关。
