问题详情

What is the passage mainly about？
A．The author"s reminiscence of the past and the complaint about today.
B．Contrast between old products and new inventions.
C．Electronics are more troublesome than other commodities.
D．The author"s complaint of smallness of valuable electronics.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！