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Conversation 1
第一段对话
Shh! Listen carefully!
嘘！仔细听！
Did you hear that? No? How about this?
你们听到了吗？没有？这个呢？
If you couldn't hear the first one, it means you're not a dog! Dogs can hear very high frequency sounds, but people can't.
如果你没有听到第一个声音的话，说明你不是狗！狗能听到非常高频的声音，但人类不能。
And if you could hear the second one, you're younger than 25.
如果你能听到第二个声音的话，说明你不到25岁。
Wow! Why is that?
哇！为什么？
Our ears change when we get older. Children and young people can hear the second one, but most people older than 25 can't.
当我们的年龄增长时，我们的耳朵会发生变化。孩子和年轻人可以听到第二个声音，但大多数超过25岁的人听不到。
Conversation 2
第二段对话
Today's topic is "Should teenagers date". Team A, please begin.
今天的主题是“青少年应该约会吗”。A队请开始。
We say no, they shouldn't. One reason is that teenagers are too young.
我们认为他们不应该。一个理由是，青少年的年龄太小了。
They should think about schoolwork and spend more time studying.
他们应该想学业的事，并且花更多的时间来学习。
We don't agree with Team A. Our answer is "Yes". Teenagers can date if they want.
我们不同意A队的观点。我们的回答是“应该”。青少年们如果想约会的话，他们就可以约会。
It is quite natural for a teenager at that age to feel he or she likes somebody.
在这个年龄，青少年感觉他或她喜欢某人是非常自然的事情。
We think it's possible for teenagers to date and study at the same time.
我们认为青少年可以在学习的同时进行约会。
Team A?
A队呢？
