蚕蛾

聆听悦耳英音第24期 Moths 英国人的"妖蛾子"之患(2)

嘉宾：Debbie Mason 话题：Moths 英国人的妖蛾子之患单词拼写： 1、Species：type 2、Declining：going down (health or traffic) 3、Pollinators：the insects plant to flowers 4、Spectacular：magnificient 5、Morph： to change ,t

发表于:2018-12-27 / 阅读(50) / 评论(0)

聆听悦耳英音

英文书摘精选 1500年前,丝绸生产是中国的国家机密

Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks smuggled silkworm eggs to Co

发表于:2018-12-28 / 阅读(59) / 评论(0)

初学者听力文摘精选

英语听力文摘 English Digest 536、缓慢的生存！！

Survival Of The Sluggish Silkworms have been bred over thousands of years to behave quite unlike their caterpillar cousins in the wild. Thats because people purposely breed silkworms to fit this job description: WANTEDSuperlative silk producers. Bene

发表于:2018-12-31 / 阅读(26) / 评论(0)

英语听力文摘 English Digest

英语听力文摘 English Digest 535、蚕丝生产的秘密你知多少？

Secrets Of Silk Production Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks s

发表于:2018-12-31 / 阅读(25) / 评论(0)

英语听力文摘 English Digest

英语听力文摘 English Digest 23、1500年以前,丝绸的生产是中国的国家机密

1500年以前，丝绸的生产是中国的国家机密 Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death

发表于:2019-01-26 / 阅读(50) / 评论(0)

英语听力文摘 English Digest

英语听力文摘 English Digest 421、植皮有新招

Silkworm s and Skin Graft s Don: One of the neater things thats going on in biology is the genetic modification of species. By changing the instructions in their genes, we can make certain plants and animals produce things that are useful to humans.

发表于:2019-02-16 / 阅读(34) / 评论(0)

英语听力文摘 English Digest

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