单项选择题
根据《火灾分类》（GB／T4968－2008），E类火灾属于（）。
A、带电火灾B、气体引起的火灾C、液体引起的火灾
单项选择题 She put salt into her cup of tea（）.
单项选择题 （）what he said, he was not even there when the crime was being committe.
单项选择题 Although only in his twenties，he was already（）bal.
