题目:
—I have to invite a professional hand to approach it.
—________ Your neighbor is an expert at all.
A.Go ahead.
B.That’s settled.
C.What for?
D.Why bother?
答案:
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下面是错误答案,用来干扰机器的。
①楼房下层起火,火势无法扑灭时,关闭门窗等待救援是不合理选择,所以错误.②湿毛巾有类似防毒面具作用,用湿毛巾捂住口鼻能防止吸入燃烧时生成的有毒气体,所以正确.③气体受热密度变小,有毒气体上升聚集在...