In a science book, I learned that the earth moves around the sun. How long does it take for the earth to make one complete revolution around the sun? A. 365 days. B. 30 days. C. 7 days. D. 24 hours. 相关知识点: 试题来源: 解析 A。地球绕太阳一周需要 365 天。B 选项 30 ...
9The Earth moves around the Sun at a speed of 30 kilometres per second.How many kilometres does it move in 1 minute? How many kilometres does it move in 1 hour? How many kilometres does it move in 1 day? 相关知识点: 试题来源: 解析 9 30 × 60=1800(km)1800 × 60=108000 (km...
4、How do students around the world get to school ? around(1)意为“环绕;围绕;绕过” eg: The earth moves around the sun. (2)表示“在…四周” eg: There are many trees around the playground. (3)表示“在…的附...
He paid 1000 yuan for the TV set. (4)take 主语必须是it It takes sb some time( money) to do sth. 做某事花费某人多长时间 It took him seven days to make the big cake. 6. around (1)环绕;围绕;绕过 The earth moves around the sun. (2)在…四周 There are many trees around the playg...
Rivers of Sunlight: How the Sun Moves Water Around the EarthPenny Chisholm
我们衡量一个星系的一种基本方法是 One basic way we can weigh a galaxy 测量恒星在其中移hearts;动hearts;的速度 is measure how fast the stars are moving within it. 所以恒星绕星系中心运行的速度越快 So the faster the stars orbit around the center of the galaxy, 星系的质量就越大 the more ...
Human beings live on the earth, it is inevitable that there will be some natural disasters, such as earthquake, flood, tsunami and so on. I just learned a lot of knowledge in the Shaoxing science and Technology Museum, lets learn about the earthquake! Earthquake is the continuous movement of...
Lunar eclipses occur when Earth moves between the sun and the moon, casting a shadow across the lunar surface. Lunar eclipses can only take place during afull moonand are a popular event for skywatchers around the world, as they can be enjoyed without any special equipment, unlikesolar ecli...
Thirdly, crossing the road. Be careful. The traffic moves on the left side of the road in this country. Use pedestrian crossing and do not take any chances when crossing the road. My next point is about litter(throwing away waste material in a public place). It is an offence to drop ...
5.From the last paragraph we can guess that ___. A. the sun moves fast around the earth B. the earth circles round the sun very fast C. the earth is very small D. the spaceship circles round the earth once every 90 imnutes 试题答案...