Unfortunately, although the Earth was flat, no one was able to figure out its size. Gradually, however, people began to realize that the Earth was really round.Then, in the third century BC (2,300 years ago), a Greek man named Eratosthenes had an idea. Eratosthenes was sure that the E...
D. In sand from a near-Earth asteroid.( )2. The underlined word “meteorites" here means“” . A.陨石 B.空间 C.星体 D.气体( )3. How can the scientists be sure that the sand from Ryugu wasn't polluted by living things on Earth? A. It was sent to Earth in a spaceship. B. ...
I regard the Chinese insistence on collective focus on this issue -- that of what kind of world we wish to create, as exactly the right one. I admire the Chinese effort to define what they see as the future of this Earth and of mankind. I find it even inspirational. I believe the C...
“It was a simple way to slow down and connect with others,” she says. The turquoise table was inviting and had a shared feel. People often hesitate to invite others into their homes. They think their house ...
The reason for this is that the Earth is like a ball, but a map is flat. It is easy to find places, but some people said it was unfair because places including Canada, the UK and Europe appeared much bigger than they really w...
The Earth is our home,and we should protect it.But what can we do?How to protect our environment?For example,we can go to school on foot or by bike instead of taking a car..【高分句型一】We had better use shopping baskets instead of plastic bags when we go shopping.We should use ...
Related:How was Earth formed? In addition to the large bodies of the solar system, scientists have studied smaller rocky visitors that have fallen to Earth.Meteoritesspring from a variety of sources. Some are cast off from other planets after violent collisions, while others are leftover chunks...
“If something containing iron oxide was heavily brunt, by natural orhuman actions, the iron particles in it can be permanently reoriented, like a compass needle, to align with the Earth’s magnetic field present at that point in time and space.” The magnetometer detects differences in the ...
"I was studying pregnant women ethnography in Zanzibar, and I asked a woman what she ate when she's pregnant, and in Swahili she said, 'Every day I take earth from this wall and eat it.' I was just learning Swahili and was pretty good at it, but I really didn't think I was ...
The first Earth Day was on April 22. 1970. It was in the United States. How did it come into being? A man named Mr. Nelson started it. He wanted people to take care of the earth. People worked on cleaning the land, water and air. Some people picked up trash, other people planted...