一、听下面的对话和独白。每段对话和独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳答案。每段对话和独白读两遍。
听下面一段对话，回答第1至第2两个
个小题。
()1. Who did Lily go to Lao She Teahouse with last night?
A. Her friend.
B. Her classmate.
C. Her sister.
()2. How long did Lily stay in Lao She Teahouse?
A. For one hour.
B. For two hours.
C. For three hours.

1. C
2. B

听下面一段独白,回答第3至第5三个小题。
() 3. What is the function of the low-pressure area?
A. To form clouds.
B. To pull more air in.
C. To cause heavy rain.
() 4. What causes a storm to become a typhoon?
A. It brings heavy rain.
B. It forms over the ocean.
C. Its wind speed reaches 118 km per hour.
() 5. When do typhoons get weaker?
A. When they move away from the ocean.
B. When they begin to move to the ocean.
C. When the air pressure on land is too high.

3. B
4. C
5. A