A: Where do you live?

B: ____

A:  ____

B: I live 10 kilometers from school.

A: How do you usually get to school?

B:  ____

A: How long does it take?

B: 25 minutes by bus and about 50 minutes by bike.____

A: I live near our school.

B: Do you usually go to school on a bike?

A: No.  ____

下列有关物质用途的叙述中不正确的是(    )