How did ancient people keep time? One of the earliest ways was with a simple stick placed in the ground. The shadow(阴影) of the stick is different at different time. This special kind of"clock" was called a sundial(日晷). The Egyptians used it as early as 5,500 years ago. They al...
任务型阅读How did anciet people teil time?Natural ways of keeping time In ancient times, people had to use the sun and the moon to tell time. They got up when the sun came up and worked in the fields until the sun went down.Man-made things The sand clock was made of two glass ba...
Although it is chilly outside in winter, we have heating systems to keep us warm indoors in most parts of North China, and in South China, they at least have air conditioners or electric radiators. But how did ancient people in Chin...
Humans attempted to reanimate the skulls of our dead for thousands of years. With the help of modern technology and ancient DNA, it’s now both an art and a science.
but those of low birth could never raise their social status. This man allegedly wanted to find his way in Tang society, where he believed he could rely on his own skills to either become a scholar via theimperial examinations or join the imperial army. The Tang dynasty did operate, to ...
和“When the water in the pot dripped out, marking inside the pot showed how much time passed.”可知,沙漏和水钟都是通过观察流走物质的数量来确定时间的。故选C。 (5)题详解: 主旨大意题。根据标题“How did ancient people tell time?”可知,本文主要介绍了计时的方法。故选C。
(1)How did Chinese people in ancient times do calculations quickly? D A.They used stones and seashells to do calculations. B.They used electronic calculators to do calculations. C.They used electronic abacus to do calculations. D.They used abacuses to do calculations.(2)The bead above the ...
Everything went on well as we planned. John wore a new pair of pants and a new shirt the next week. He felt happy. So did we. When we help others, we need to find a proper way, or we may hurt them in another way. 【小题1】The two girls and John were in the same___ A....
Inversion therapy: does hanging upside down help headaches? There is not enough evidence to support this idea. In fact, hanging upside down has been known to be fatal for some people if they stay upside down for too long. Inversion therapy can cause blood to collect in the brain, which ca...
where girls can be whatever they want to be and have examples to help them along the way. Famous women in history have been trailblazing for ages- from Lozen, a gifted warrior who was a shield to the Apache people, to Dr. Chien-Shiung Wu, who is known as the “First Lady of ...