更新1:
What is the most abundant semi-metal in Earth's crust?
What is the most abundant semi-metal in earth s crust?
回答 (2)
2016-09-16 1:20 pm
✔ 最佳答案
Calcium 
2016-09-16 1:51 pm
calcium--soft white metal (symbol Ca).
收錄日期: 2021-04-30 21:28:35
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https://hk.answers.yahoo.com/question/index?qid=20160916021937AAvqFP3