英语听力精选进阶版 7306

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 livestock¹ 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 stem² 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.

Initial³ 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 laboratory⁴ 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

1 livestock   

n.家畜，牲畜

参考例句：

• Both men and livestock are flourishing.人畜两旺。
• The heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。

2 stem   

n.茎，干，船首，词干，血统；vt.堵住，阻止，抽去梗；vi.起源于，发生

参考例句：

• Cut the stem cleanly,just beneath a leaf joint.把茎切整齐点，正好切在叶根下。
• The ship was in a blaze from stem to stern.整艘船从头到尾都着火了。

3 initial   

adj.最初的，开始的，词首的；n.首字母，姓名的开头字母；vt.标注姓名的首字母于

参考例句：

• After she'd overcome her initial shyness,she became very friendly.她克服了起初的羞怯之后，变得十分友善。
• The experiments have given initial results eventually.那些试验总算初见成效了。

4 laboratory   

n.实验室，化验室

参考例句：

• She has donated money to establish a laboratory.她捐款成立了一个实验室。
• Our laboratory equipment isn't perfect,but we must make do.实验室设备是不够理想，但我们只好因陋就简。