单项选择题

Part A You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer--A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. What probably caused the man’s stomach-ache

A.The pear.
B.The sea food.
C.The weather.
D.The cold.