听一段材料，回答下面几个小题。What does Lucy usually have for her meals?
A. Chips and cola.
B. Fruit and vegetables.
C. Meat and grains.What's the relationship between the speakers?
A. Doctor and patient.
B. Friends.
C. Brother and sister.
听一段材料，回答下面几个小题。What are the two speakers talking about?
A.Thunder and sound.
B.Thunder and lightning.
C.Thunder and science.Why is the man unlikely to see lightning?
A.He is asleep.
B.He is reading a science book.
C.Perhaps lightning is far away.
Who are the two speakers?
A.Retired soldiers.
B.College students.
C.Army people.
What happened to the speakers?
A.They lost their way.
B.They were caught in the traffic.
C.They broke the traffic rule.
What is the weather usually like in May?
A.Warmer and drier.
B.Cooler and drier.
C.Warmer and damper.
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