正确答案: D

节日燃放的烟花是某些金属元素发生焰色反应所呈现出来的色彩

题目：下列有关金属及其化合物的说法正确的是

解析：D

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举一反三的答案和解析：

[单选题]

B． thehouse C． Scotland D． theisland

theisland

[单选题]CAlex London Research Laboratory (ALRL) is part of Alex Co., Ltd., a major Australian medicine-making company. Opened in 1992, ALRL specialises in the development of new medicines for the treatment of heart diseases．

They have not yet been set up．

[单选题]苔藓植物的孢子萌发首先形成( )。

原丝体

[单选题]In Bargh’s experiment, the students were asked to （ ）

evaluate someone’s personality