A precious textile, silk was at first reserved for exclusive use by the Chinese imperial court. Chinese officials decided that silk-making methods must remain China’s secret. (丝是一种很薄但非常结实的纤维。它是由蚕在结茧时产生的蛋白质制成的。几千年前,中国古代工匠开始将丝绸纤维编织成柔软、...
Who Invented Silk? Silk is a thin, yet extremely strong, fiber. It is made from protein that silkworms produce when they make their cocoons. Thousands of years ago, ancient Chinese craftsmen began weaving silk fiber into a soft, smooth fabric. A precious textile, silk was at first reserved...
3.these,who,invented,all,of. 4.in,dress,the,woman,the,silk,teacher,my,was,ago,five,years. 答案 1all,the,airport,reday,leave,us,of,to,are,for - All of us are leaving for the airport today.翻译:我们所有人今天要启程去机场.2.such,.lake,it,a,is,large.- It is such a large lake...
In modern times, the old Silk Road routes (路线) are still used, but now they are crossed by trains instead of camels and horses. There is even a Silk Route Museum in Jiuquan in China. It has over 35,000 objects from all along the Silk Road. In this way, China protects the history...
figuring out how to make cloth from the coco on threads.Eventually,Lei invented silk,and the caterpillars (10) have been called (call) silkworms since then.答案(1)考查冠词。句意:它被认为是文明起源的象征。泛指"一种文明的象征",用不定冠词,symbol是辅音音素开头的单词,用a...
To increase interactivity, in 1964 Dr. Bitzer, along with a fellow professor, H. Gene Slottow, and a graduate student, Robert Willson, invented a plasma display illuminated by gas-infused pixels — the same technology that would later power flat-screen televisions. ...
In fact, tea, the most popular drink in the world (after water), was invented by accident. According to an ancient Chinese legend, the Emperor Shen Nong discovered tea w 【 1 】 he was boiling drinking water over an open fire. Some l 【 2 】 from a nearby bush fell into the water...
21.细节理解题。根据Death Valley部分的Beijing’s cyclists named this northern route “Death Valley” on account of the huge tomb it passes可知,这条路线被命名为Death Valley是因为这条路线要经过一个大型坟墓。故选C。 22.细节...
To solve this problem Etak invented ‘augmented dead reckoning’. This used a process to match the position given by the navigation sensors to a topologically correct electronic map. Whenever the vehicle turned you made the assumption that you’re driving on a road. At that point the location ...
Atanasoff invented the first electronic digital computer in the 1930s at Iowa State College. Challenges to his claim were resolved in 1973 when the Honeywell v. Sperry Rand lawsuit ruled that Atanasoff was the inventor of the computer. His special-purpose machine has come to be called the ...