单项选择题
The writer compares home to a workshop because （）
A．fathers often persue employment at home B．many families produce goods at home for sale C．both fathers and mothers in most families are workers D．parents have to make food and necessity themselves for their daily life
单项选择题 28（）
单项选择题 According to this passage, the umbrella was probably first invented（）
单项选择题 26（）
