The article discusses the study regarding the origin of life on Earth. It mentions that the evidence for life comes from 3.8 billion-year-old sedimentary rocks, discovered in the 1990s to have low proportion of the heavy isotope of carbon. It explains that there is a possibility of ...
How andwhere did life on earth arise?B. What canreplace cheap oil? When?C. Will Malthus continue to be wrong?D. Is an effective HIV vaccine feasible?E. How hot will the greenhouse world be?F. When willlife on earth disappear?Thisassage is madeup of 5 unanswered scientific questions:1...
相关知识点: 试题来源: 解析 C。这是一个强调句。强调句的结构是It is/was + 被强调部分+ that + 其他部分。此句强调的是地点状语on Earth,所以用that。强调句可以用来突出句子中的某个成分,这里强调地球是第一个智慧生命形式出现的地方。反馈 收藏 ...
D"The ocean where life on Earth began is being turned into plastic soup. " With these words, journalist Thomas Moore starts a journey for an all-round examination of the phenomenon. He heads for many different areas around the world. The result is a 45-minute film called " A Plastic Tid...
Did life crash-land on our planet or did arise from a bubbling cauldron of planetary ingredients? A growing body of evidence explains how the answer is, well, both. As the researchers explain to Inverse, it’s complicated — and a little bit mind-blowing. Lightning striking the ground may...
On March 22, Zhang received this year's L'Oreal-UNESCO For Women in Science award. She earned the award for "pioneering work on fossil records leading to insights on how, aquatic vertebrates(水生脊椎生物) adapted(适应) to life and land" , according to UNESCO. ...
【语篇梳理】Para 1 : The oceans are where life on Earthbegan and it has been estimated that there arearound 230, 000 different marine species.Para 2 : Oceans have always played animportant part in human life.OceanecologyPara 3: The ocean has traditionallybeen a source of nutritious food....
Life is not all roses. 人生并不都是康庄大道. Heaven never seals off all the exits. 天无绝人之路. Is it not a joy to have friends come from afar 有朋自远方来不亦乐乎 Reading is always profitable. 开卷有益. A gentleman acts on behalf of an understanding friend, as a woman makes her...
15. How did the Amazon people react to Charlie's visit? A. Defensively. B. Favorably. C. Angrily. 16. What does Charlie want to show through his works? A. The natural beauty of the Amazon. B. The damage done to the rainforests. C. The happy side of the local life. 听第10段材料...
By including these steps into your digital life, you can protect yourself from undue influence in the online world, ensuring that you can think and act independently, free from ill control. 40 It is your mind. O...