题目

逻辑推理是化学学习常用的思维方法，下列推理正确的是（） A . 水能灭火，所以燃烧无法在水中进行｡ B . 氯气有毒，所以制氧气所得的氯化钾也有毒｡ C . 碳单质具有可燃性，所以金刚石也有可燃性｡ D . 在某化合物中金属元素显正价，则其非金属元素一定都显负价 答案：C______ snakes and drinks, but they also brought cards for amusement when they had a picnic in the forest. [　　] A．Not only they broughtB．Not only did they bring C．Not only brought theyD．Not only they did bring