化学上常对物质进行分类和研究，以下物质中属于酸的是_刷题宝

题干

化学上常对物质进行分类和研究，以下物质中属于酸的是（　　）

A：HNO₃

B：MgO

C：O₂

D：NaCl

上一题下一题 0.0难度选择题更新时间:2018-09-20 10:21:30

答案(点此获取答案解析）

A

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配对阅读（有两个多余选项）
____I am Linda. I like listening to music on the weekend.
____I'm Jim. I love watching TV shows about music.
____I'm Helen. I like doing sports. It is very relaxing for me.
____I'm Cindy. Pandas are my favorite. Many photos of them are in my room.
____I am Zhang Ming. I teach math in a middle school.

A. There is a beautiful woman. She is teaching some girls to dance in a dance club.

B. A boy is in the living room now! He is watching the TV show I Am A Singer IV.

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