Humans have always been curious about what Earth was like thousands of years ago. To learn more about the plants and animals that lived during that time, scientists examine their fossils or other remains. In recent years, genetics, and in particular the the study of DNA, has become an impor...
【题目】 Humans hav e always been curious abo ut what Earth was lik e thousands of years ag o . T o learn mor e about th e plants an d anim als that liv e d during that time, scientists er amin e their fossils or other remains . In rece nt years, genetics , an d in ...
–Look! How beautiful theworld was! Oh! What will the birds do?看!世界多么美丽啊!哦!鸟儿怎么办?–Don’t worry.People will help them.不要担心。人类会帮助它们的。Before humans lived on theearth, whales already lived in ...
Of course, we don’t know, but to consider the question, let’s scoot back a million years to see what humans looked like then. For a start,Homo sapiensdidn’t exist. A million years ago, there were probably a few different species of humans around, includingHomo heidelbergensis, which ...
Geologist Jan Zalasiewicz takes the reader on a fascinating trip one hundred million years into the future--long after the human race becomes extinct--to explore what will remain of our brief but dramatic sojourn on Earth. He describes how geologists in the far future might piece together the...
【题目】Humans hav e always been curious about what Earth was lik e thousands o f years ago.To learn mor e about th e plants and animals that lived during that time, scientists examine their fossils or other remains. In recent year s, genetics, and in particular th e th e study of ...
根据第二段中“On 4 October 1957, the Sputnik 1 satellite was launched by the USSR and successfully orbited around Earth. Afterwards, the USSR focused on sending people into space, and on 12 April 1961, Yuri Gagarin became the first person in the world to go into space. Over eight years...
Learn about life on Earth before humans made an appearance inWhat the Dinosaurs Saw, by author/illustrator Fatti Burke. Our whole universe began as a tiny dot, filled with so much hot, dense energy that it burst. This event was the Big Bang, and from the remnants of that explosion, our...
Zhang Peng:You know, back then, in this place, you didn’t even need guns.You missed the good old days.This street was not like this.It was...The night market rocked.It was known as the “Little Northeast” of Africa.Barbeque stalls everywhere.It’s fine.Patrols.The mosquito pie.Abou...
Like all the planets in this solar system, Earth rotates around an axis, an imaginary line between its North and South poles. At the same time, it orbits the sun, finishing a new lap every 365.25 days. Relative to its pathway around the sun, Earth's axis has a 23.5-degree angle tilt...