A．has had chemicals and fertilizers added to it B．contains vegetable matter that has not been consumed C．has been nourished by fertilizers D．already contains large quantities of vitamins and minerals
单项选择题57（）
A．going B．came C．go D．coming
单项选择题A person who gets the basic necessities must （） according to the writer.
A．have a reliable income B．learn how to please his manager C．finish his work ahead the time D．get a good education
