题干
— Why not read the book on the grass, Steven?
— Reading books in the Sun is harmful to my eyes.
— Reading books in the Sun is harmful to my eyes.
A：is helpful
B：is good for
C：is bad for
答案(点此获取答案解析）
C
Cl反应，另一份与过量NaOH溶液反应，产生的H2体积比为1:2，则两份铝屑的质量比为