题目内容

下面的一段文章为课文原文的浓缩,仔细阅读,根据原文章内容将其补充完整。

Different metals have different   1  .When we use metals, it is   2   to know how they   3   with different   4  .The reaction of metals with these substances can be put in   5  .From the   6  , we can find that potassium reacts   7   with oxygen and water while   8   doesn’t react with water.When we   9   calcium in oxygen, it burns to   10   an oxide.

答案:
解析:

1.uses 2.important 3.react 4.substances 5.order 6.table 7.most 8.copper 9.heat 10.form


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