菩小帅傲娇脸
Silk is one of China's greatest treasures. It is a type of fabric made from the cocoons of silk worms. The making of silk has been a secret of China for many years until some Chinese people were kidnapped and forced to tell the secret to the Europeans. Silk is very soft in texture and has been traded for lots of money on the Silk Road before. 丝绸是中国最伟大的宝物之一。这是一种用蚕茧做的不了。丝绸的做法在欧洲人强行绑架中国人并逼他们讲出的时候一直是一个秘密 （这个我不是很清楚，但我记得是这样）丝绸很柔软所以以前在丝绸之路上为中国赚取了很多钱。望采纳
大熊简单明了
Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons.The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture). The shimmering appearance of silk is due to the triangular prism-like structure of the silk fibre, which allows silk cloth to refract incoming light at different angles, thus producing different colors.Silk is produced by several insects, but generally only the silk of moth caterpillars has been used for textile manufacturing. There has been some research into other types of silk, which differ at the molecular level. Silk is mainly produced by the larvae of insects undergoing complete metamorphosis, but some adult insects such as webspinners also produce silk, and some insects such as raspy crickets produce silk throughout their lives. Silk production also occurs in Hymenoptera (bees, wasps, and ants), silverfish, mayflies, thrips, leafhoppers, beetles, lacewings, fleas, flies, and midges. Other types of arthropod produce silk, most notably various arachnids such as spiders (see spider silk).
哈啰辉辉
古代横贯亚洲大陆的交通要道。自公元前119年张骞出使西域后逐渐出现。东起我国古都长安（今西安附近），沿渭水西行，经过河西走廊（今甘肃省狭长地带），到达敦煌，出玉门关和阳关，进入“西域”（今新疆及以西地区）。南路出阳关沿昆仑山北麓西行，北路出玉门关沿天山南麓西行，翻越葱岭（今帕米尔高原）进入今中亚地区，再往西，经今伊朗等国到达大秦（罗马帝国在中东的领地）境内。汉代多走南路。唐代多走北路。“丝绸之路”全长约7000公里，因运输西方视同珍宝的中国丝绸而得名。通过丝绸之路，中国的丝绸、铁器、打井技术等传到西域，西域的土特产、乐器，印度的佛教等也传入中国。丝绸之路是汉唐千余年间中外经济、文化交流的重要通道 丝绸之路是一条横贯中亚、联系欧亚两洲的交通大道，它对这些国家之间的政治、经济和文化交流发挥了重大的作用。因为大量的中国丝和丝织品由此道西运，所以这条交通大道被称为“丝绸之路”。丝绸之路全长7000多千米，是古代最长的一条陆路商道。 丝绸之路是始于西汉时期的中国与中亚河中地区以及印度之间、以贸易为主的交通路线。因中国丝及丝织品多由此路输出，故称丝绸之路。中国以盛产丝织品而闻名世界，被称为“丝国”。通过丝绸之路，大量丝帛锦绣不断西运，同时，西域的“珍奇异物”也被输入中国。
