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.

因为凡爱虚荣的人只得进赞美的话。

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

大多数人没有说这种动物的原因穿山甲动物。

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

所以我们不见狗哨声。

She heard you. We all heard you!

见了 我们所有的人都见了！

That was a weaselly fudge if ever Bagehot heard one.

如果白芝浩含糊的外交辞令，也还会认为这相当狡猾的一句。

Huh, you really can hear a mermaid!

呵呵，你真的可以美人鱼的声音！

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

猩猩吸烟时还能够一些游客的笑声。

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，大多数人不这样想的。

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.

请根据你刚刚的文章回答问题19至问题21。

And we know it because we heard it.

我们之所以知道这一切， 因为我们了它们。

You probably haven't heard of Roberta Jacobson.

你可能没说罗伯塔·雅各布森。

Gaelic can still be heard, by the way.

顺便说一句，盖尔语仍然可以。

If you hollered, we wouldn't hear you.

在这叫一声，我们不见的。

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。