We’ve all heard of the expression ‘smooth as silk’, but where does silk come from? Silk is the thread which is extracted from the cocoons of the silkworm (the adorably-named‘bombix mori’). Silkworms eating mulberry leaves Silkworms are now purposefully farmed and bred to produce silk,...
The chemicals used to make nylon are amine, hexamethylene diamine, and adipic acid. The new amide molecules are held together by hydrogen atoms. This chain of molecules, which is nylon, closely resembles the chemical structure of silk, which is produced by silkworms. Warning Things made from ny...
They raised silkworms () to make the silk for the fishing nets and kept cats around to kill mucewhich were the predators of the silkworms.As the fishermen started watching the cats all the time, they believed that the animals' actions could tell the weather or the movements of the fish ...
Made from the protein fibers of the silkworm cocoon, silk is one of the most delicately woven5(product) in the world. Silk moths lay around 500 eggs during their lifespan of four to six days. Fed a diet of leaves in a controlled environment, the silkworms grow6(fast) in weight than ...
8、 问题:Multiculturalism always wins favor from the mass. 选项: A:对 B:错 答案: 【错】 9、 问题:Which one of the following is the correct order of making Chinese silk? (1) Twig frames for the silkworms are prepared. (2) The cocoons are weighed. (3) The silkworms and mulberry leav...