Although （） happened in the developed country sounds like science fiction, it could occur elsewhere in the world. ( 章节：2 难度：2)_做题室

单项选择题Although （） happened in the developed country sounds like science fiction, it could occur elsewhere in the world. ( 章节：2 难度：2): A、which; B、what; C、how

正确答案：B
答案解析：
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