听一段材料，回答下面几个小题。What did the woman do on Friday?
A.She prepared for the exam.
B.She attended a class activity.
C.She had a history lesson.What is the weather in the desert like at night?
A.Hot and dry.
B.Hot and wet.
C.Cool and dry.Why is it easy to see different rocks in the desert?
A.There are very few plants.
B.There are too many rocks.
C.There are different colors of rocks.
How did the man go to Canada?
A. By train.
B. By car.
C. By bus.
How is the man now?
A. He is sound and safe.
B. He is going to die.
C. He doesn't feel well.
How does the man suggest that the woman pay for the books?
A. In cash.
B. Not by check.
C. By credit card.
How is the man getting to work?
A. Riding.
B. By bus.
C. Driving.
How often will the woman have to take the medicine?
A. Four times a day.
B. Twice a day.
C. Three times a day.