一 Shall we go to the library tomorrow morning?
— . And I am giving back some books too.
A:Good idea.
B:Sorry, I don't want to go.
C:Thank you.
D:That's all right
选项
归类
物质(或元素)
A
常见碱
纯碱、烧碱、熟石灰
B
常见合金
生铁、铜绿、硬铝
C
常见干燥剂
浓硫酸、生石灰、碱石灰
D
人体中常见微量元素
碘、锌、硒、钙等