英语听力精选进阶版 7306（在线收听）

研究人员在伦敦向公众展示了世界上第一个在实验室里培育生长出的汉堡。这个汉堡是从死牛的肌肉中提取的干细胞培育而成的。此汉堡的造价高达21.5万英镑（约合人民币215万元），但研究人员认为此项技术最终将能降低肉制品的造价并且满足人们对肉类不断增长的需求。

Professor Post is developing a way to grow meat in a lab because he believes that livestock farming is not good for the environment, not good for animals nor, he says, is it going to satisfy the growing demand for meat.

His aim is to produce a burger that looks and tastes just like the real thing but from what I saw at his lab, that is still a work in progress. The flesh, grown from stem cells, is pale white and tasteless, so food technologists have had to mix in breadcrumbs, caramel and saffron to add flavour and beetroot juice to add colour. The mixture is then put together to make the burger that will be cooked then eaten by two food writers.

Initial testing during the development process suggests that it won’t taste great, but according to Professor Post, it will taste good enough.

Quiz 听力测验

1. According to Professor Post, how will growing meat in a laboratory help the environment?

He believes it will help the environment by reducing the need for livestock farming.

2. True or false? The demand for meat is increasing.

True. There is a growing demand for meat.

3. Why do food technologists need to add in flavour and colour to the meat?

Because the flesh is pale white and tasteless.

4. Who will be taste-testing this first lab-grown burger?

It will be eaten by two food writers.

Glossary 词汇表

livestock farming 畜牧业

to satisfy 满足

demand 需求

the real thing 真东西（这里指真汉堡）

a work in progress 一项正在进展中的研发工作

stem cells 干细胞

technologists 技术专家

development process 研发过程