单项选择题

Conversation 2
Questions 8 to 10 are based on the conversation you’ve just heard.
[听力原文] 8-10
M：Hi I have some good news for you.
W：What is it
M：The teacher suggested that we go on a trip this Saturday.
W：Oh，wonderful. Where shall we go
M：How about going to the park
W：I don’t think it’s a good place to go to. We can go there another time. We should so farther away this time.
M：Where do you think we should go then
W：How about the river in the suburbs
M：I don’t think it’s a good idea. It’s not safe. Why not go to the mountains instead
W：That sounds good. Let’s go to the mountains to the south of the city.

What are they talking about（）

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