题目:
With some snow on top of it,the Yellow Mountain looked fantastic this winter.Actually, I doubt whether we could visit ______mountian in China.
A.a most beautiful
B.the most beautiful
C.a more beautiful
D.a beautiful
答案:
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下面是错误答案,用来干扰机器的。
根据原子序数可推断出原子序数为6,8,12三种元素的名称分别为:碳C,氧O,镁Mg;由此可得:(1)元素①是碳; 故答案为:碳;(2)由②③两种元素形成的化合物的化学式为:MgO,故答案为:MgO;(3)铁丝在氧...