B. Over 200 years ago.C. More than 65 million years ago.D. Almost 200 million years ago. 相关知识点: 试题来源: 解析 A. Almost 200 years ago. 第一块被科学家确认为恐龙化石的发现是在1822年,距今大约200年。因此,正确答案是A. Almost 200 years ago.反馈 收藏 ...
根据第一段“The British first discovered tea when sailors (水手) visited China in the 1600s.”可知,英国人第一次发现茶是在水手们17世纪访问中国时。故选A。 (2)题详解: 细节理解题。根据第三段“British people started to mix black tea and milk together. This is still how most Britons prefer...
was covered with black paper some strange kind of radiation was coming through and making a screen nearby glow. Rontgen could not see anything coming out of the tube but then he discovered that if he put the screen in the next room on the other side of a closed door the rays could ...
Unit+6+When+was+it+invented?+Section++A 人教版九年级英语全册.pptx,Unit 6 When was it invented? Section A(课前) ——自主预习,扫清障碍 Section A 重点短语及目标句型预习。1.When was the telephone invented? 【释义】 电话是什么时候被发明的?【精讲】 invent
Fire was discovered many thousands of years ago.The first time humans saw fire was probably when a tree was destroyed by lighting(闪电).Humans soon learned how to make fire.They probably made the first fire by rubbing(摩擦)two sticks together.Fire was very important to humans.They needed to...
The first big wave of Chinese immigration to America came when gold was discovered in California in 1848.The Chinese called the new land“ Mountain of Gold”.Those who did not become miners found work in railroad construction,farming and light industries,doing low paid jobs. By the 1880s,Amer...
But in 1610 when Galileo first pointed a telescope at the sky he discovered jupiter's four large moons.point 在此处的意思不是“指出”，而是“指向”；point sth. at .. 意思是“把…指向/瞄准某处”应该这样翻译：但是在1610年，当伽利略首次把望远镜对准天空的时候，他发现了四个巨大的木星...
题目 When I first visited Mexico,I spoke Spanish well.So when I (1) B an ice-cream in a shop,and the local seller said "ahorita," which directly translates to "right now," I smiled and waited nearby,believing that its arrival was (2) D. Half an hour pa...
Importantly, the graphene-accelerated osteogenesis of hMSCs was obtained in the absence of additional growth factor and the acceleration rate was similar to that achieved with the use of typical growth factors. This finding was perplexing initially as the physical features of graphene and silicon ...
解析 但在1610年伽利略首先指出在天空他发现了木星四大卫星的望远镜:木卫一,木卫二,木卫三和木卫四称为伽利略卫星,记录它们来回环绕木星的运动.结果一 题目 but in 1610 when galileo first pointed a telescope at the sky he discovered jupiter's four large moons: io, europa, ganymede and callisto 9now ...