[听力原文]
M: I’ll take these three books. Are they fifty cents each
W: These two hooks are, but this one is 75 cents.

How much will the three books cost（）

A．spend more time eating their food at dinner table
B．eat more food than they have today
C．spend more time talking about their day’s experience at dinner table
D．talk so much that they forgot to eat

A．Nebraska was not a densely -forested state even before the settlers arrived.
B．The children enjoyed collecting the buffalo chips.
C．The children spent a lot of time collecting the chips.
D．Buffalo chips were satisfactory as a fuel.