The ancient Chinese invented silk. Silk is made from ___. A. cotton B. wool C. silk worms D. leather 相关知识点: 试题来源: 解析 C。本题考查丝绸的原材料来源。丝绸是由蚕“silk worms”吐丝制成,选项 C 正确;选项 A“cotton”棉花、选项 B“wool”羊毛、选项 D“leather”皮革都不是丝绸的...
Some use silk for hunting, such as spiders and even glow-worms, which use sticky silk to capture flying animals they’d like to eat. Studies about spider webs could pave the way for creating new materials that could be used in medicine and engineering. But synthetic (人工合成的) spider ...
It starts with an adult female moth laying eggs. Silk moths can lay anywhere between 300-500 eggs at one time. Now, when these eggs hatch, tiny caterpillars come out and immediately start searching for food. These baby worms are technically called a larvae. These larvae typically feed on mu...
They are made fromsilkthat is produced from silk worms that breed on wild forest trees, not mulberry trees. ... Though cheaper than mulberry silk, a genuine Tussar silk saree will still cost you anywhere between Rs. 3000 to Rs. 4000. What is the difference between Tussar silk and pure s...
I saw the entire process of silk production from the silkworm and the mulberry leaves to how the cocoons were hand sorted on a conveyer belt into either single or double cocoons. Surprisingly some of the cocoons have two worms inside and are used for silk batting for quilts rather than ...
【题目】丝绸的形成 A beautiful silk dress comes from thousands of small silkworms(蚕)! Silk is made by insects called silk worms. It takes about 5,500 silkworms to make 1 kilo-gram of silk. The process was discovered by the Chinese about 5,000 years ago.The process starts with the ...
Walking Worms会走路的虫Many people think that silk is the finest cloth of all. Just touching silk can be a surprise because it is so soft. Even more surprising is the fact that silk is made by special worms.If you visited a silk farm, you would see two things: silk worms and mulberry...
In order to gain silk from these insects they must be killed and their silkwinded up tight to make silk that is strong enough to make clothes. This is an expensive process and the silk worms are rare and hard to find. WHy are the silk fibres lustrous? Silk is made up of protein ...
Silk is a fabric commonly made from the cocoons of a domesticated caterpillar species (not worms) known as Bombyx mori. I say “commonly” as mulberry silk which is made from the cocoons of Bombyx mori, represents 90% of the silk industry. ...
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