Questions 12 to 15 are based on the conversation you have just heard.

根据所内容，回答12-15小题。

Seldom seen, they are frequently heard.

很少见其貌，但常闻其声。

Conceited people never hear anything but praise.

因为凡是爱虚只得进赞美话。

The reason most people haven't heard about them is they're nocturnal.

大多数没有说过这种动物原因是穿山甲是夜行动物。

It's why we can't hear dog whistles.

所我们不见狗哨声。

She heard you. We all heard you!

见了 我们所有都见了！

That was a weaselly fudge if ever Bagehot heard one.

如果白芝浩过含糊外交辞令，也还会认为这是相当狡猾一句。

Huh, you really can hear a mermaid!

呵呵，你真可美鱼声音！

Some people can be heard laughing when the orangutan starts smoking.

猩猩吸烟时还能够一些游客笑声。

She trembled when she heard the bad news.

当这个坏消息不寒而栗。

But that's not what most people hear.

但是，大多数不是这样想。

He knows exactly what people want to hear.

他特别知道大家喜欢什么。

Questions 19-21 are based on the recording you have just heard.

请根据你刚刚文章回答问题19至问题21。

And we know it because we heard it.

我们之所知道这一切， 是因为我们了它们。

You probably haven't heard of Roberta Jacobson.

你可能没说过罗伯塔·雅各布森。

Gaelic can still be heard, by the way.

顺便说一句，盖尔语仍然可。

If you hollered, we wouldn't hear you.

在这叫一声，我们是不见。

Sorry. I didn't hear you come in.

你在看什么。

" I'll believe that when I hear it" .

但哈丽雅特来学校后，甚至看都不看他一眼，不但。

Questions 8—11 are based on the conversation you have just heard.

根据刚才所对话回答8-11题。