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She picks up the book. It is her favorite book. It has a red cover. It has 52 pages. It has many pictures. It has pictures of many animals. She likes animals. She has two cats. She likes her cats. Their names are Fluffy and Muffy. She shows them the
汪培珽儿童英文分级书单三 An I can read
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
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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
英语听力文摘 English Digest
I mean, these guys were, frankly dumb as a fence post. Sauroposeidon does almost everything by instinct, including rearing or more accurately not rearing its children. It may seem cruel to just dig a hole and leave your eggs and wander on, but its a
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He goes to the petting zoo. There are many different animals. He pets the turtles. The turtles feel rough. He pets the sheep. The sheep feel wooly. He pets the cows. The cows feel smooth. He pets the bunnies. The bunnies feel fluffy. He tells his mom
英语第2级听力-English Level 2
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.
英语听力文摘 English Digest