Part 4
Sally and Ben happened to meet at the bus stop one Sunday morning.
W:Ben， you look tired. What's the matter?
M ： I stayed up late last night. I only slept for about 6 hours.
W:What? Why did you go to bed so late?
M ： An old friend came over and we had a talk until late last night.
W ： Then why didn't you stay in bed a little longer this morning?
Mil couldn't, Sally. I have to meet my study group at the
school gate. W:What for?
M: We'll have a math test tomorrow.
W: A math test. I've read a report. It says that if you don't get enough sleep after you study, you may forget 30% of what you've learned.
M:Forget 30%? That's a lot.
W: Yes. I've also read that eating right can help you study.
M: The food you eat helps you study?
W: Right. There are chemicals in food that help you staywell. I think the best foods are fish, eggs, rice and so on.
M:I see. Thanks for telling me.
W ： My pleasure. Oh ， the bus is coming. See you.

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