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听力文本：
Questions 3 and 4 will be based on the following news item.
问题3和问题4是关于新闻听力的。
Professor Post is developing a way to grow meat in a lab
Post教授正在研发一种在实验室种植肉类的办法，
because he believes that livestock farming is not good for the environment, not good for animals nor,
因为他认为畜牧对环境和动物都不利，
he says, is it going to satisfy the growing demand for meat.
而且也无法满足人类日益增长的肉类需求。
His aim is to produce a burger that looks and tastes just like the real thing
他的目标是创造出一种样式和口味与真实汉堡相似的人造汉堡。
but from what I saw at his lab, which is still a work in progress.
但是根据我从他实验室里看到的，该实验仍处于进展当中。
The flesh, grown from stem cells, is pale white and tasteless,
因为人造肉是用干细胞培育而成，无色无味，
so food technologists have had to mix in breadcrumbs, caramel and saffron to add flavor and juice to add color.
因此食物专家用面包屑，焦糖和藏红花为其加味、用果汁为其上色。
The mixture is then put together to make the burger that will be cooked then eaten by two food writers.
所有用料添加完毕后进行烹制，最后制成汉堡由两位美食作家品尝。
Initial testing during the development process suggests that it won't taste great,
起初的试验阶段表明这一汉堡的口味有所欠佳，
but according to Professor Post, it will taste good enough.
但是Post教授表示，汉堡会越来越美味的。
Question 3.Why Professor Post is developing a way to grow meat in a lab?
问题3.为什么Post教授要研发在实验室里种植肉类的办法？
Question 4.Why do the food technologists have to add juice to the grown meat?
问题4.为什么食物专家要在人造肉里加果汁？
译文属可可原创，仅供学习和交流使用，未经允许不得转载
