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【SSS精析电台-原文】我们将来会吃面包虫么?

TFT小组  · 公众号  · 留学  · 2019-04-09 20:30

正文

亲爱的小伙伴们大家好,

欢迎来到本期 “SSS素材精听”

每期我们会为大家准备

最新的SSS听力中英文素材

旨在帮助大家

梳理素材重难知识点和重要连读

请大家根据文中方法反复练习,

进步指日可待!


我们将来会吃面包虫么?




听力方法

1.不看听力原文 盲听语音 ,了解大致意思。

2. 对照听力英文原文仔细听 ,分析文章结构及文本大意。

3.对照听力英文原文和“TFT语音精读详解“ 剖析文章结构 ,攻克重难语法。

4. 分段落跟读语音素材 ,练习连读,同时提高口语的语音语感。

以上方法为一个整体步骤,每一步看可多次操作,但建议不要跳步骤。

素材正文:

A pound of chicken will set you back a couple bucks.

Ground beef, maybe three to four dollars a pound.

But a pound of protein -rich dried mealworms could cost twice as much.

"The price per pound of mealworms is still relatively expensive."

Juan A. Morales-Ramos is a research entomologist with the USDA in Stoneville, Mississippi.

But he says that cost might be coming down.

For eight years, he and his team have selectively bred mealworms, which are the larvae of a type of darkling beetle .

Their goal was to breed larger and larger worms - and they succeeded in nearly doubling the size of the larvae.

But doubling up came with an evolutionary tradeoff : larger larvae had fewer eggs, and their offspring weren't as hardy as the ancestral strain .

Still, generations are shorter in the worm world—meaning it's faster to experiment—and sequencing the genes of the selected strains might reveal new traits to breed for.

"We may be able to produce a superline of mealworms that grow faster and larger and probably produce more eggs, hopefully."

The findings are in The Journal of Insect Science.

The eventual goal is to bring mealworms beyond fishing bait.

If the cost comes down, they'd be an economical protein source for farmed fish and chicken feeds.

And one recent study rated them as significantly healthier than beef or chicken— for a human diet .

Other cultures are leading the way.

"There are many cultures not just in Mexico but in Asia and Africa that regularly consume different types of insects.

They sell them in the market.

In Mexico there are restaurants that specialize in serving insects.

And I'm not talking just regular restaurants, these are like five star restaurants doing that."

Of course, here in the US we also eat insects .

But in the near future we might do it







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