听下面一段独白，回答以下小题。
【小题1】Why is it that people don’t usually freeze-dry foods at home?

A．Most foods can’t be freeze-dried.	B．They don’t know how to do it.
C．They don’t have proper equipment.	D．This process is time-consuming.

【小题2】Which of the following is true about freeze-dried foods?

A．They are very light in weight.	B．They take up little space to store.
C．They don’t keep much nutrition.	D．They don’t taste as good as before.

【小题3】What does this passage mainly talk about?

A．How to produce freeze-dried foods.	B．Why people like freeze-dried foods.
C．Advantages of freeze-dried foods.	D．Features of freeze-dried foods.