How many kinds of animals live on the Earth?A recent survey shows that scientists have found more than 2 million kinds of animals and there are over 10 million we haven't discovered yet.Animals are much more than food or pets for humans.Animals are smart.Some of them do very unusual thi...
A. Fach plant can live alone B. Fach animal can live alone C. If living things want to live, they must kill each other D. Fery living thing on the earth cannot live without others 相关知识点: 试题来源: 解析 地球上的每一个生物都无法脱离其他生物独自生存,生物之间相互依存,形成复杂的生态...
How Many People have ever Lived on Earth? Population Today 23(2): 4-5.Haub C (1995) How many people have ever lived on earth? Popul Today 23(2):4-5.Haub, C. (1995), How many people have ever lived on Earth?, Population Today 23 (2), 5-6...
People have always been curious how living things on the earth exactly began. A. in B. about C. of D. at
Why do we have day and night? When the half of the Earth is facing the Sun, it’s daytime. As the Earth turns and this half is away from the Sun, night is coming. And it’s daytime for the other half. 1.How many planets are running around the Sun?
相关知识点: 试题来源: 解析 B【答案】B【核心短语/词汇】how long:多长时间【翻译】恐龙在人类之前在地球上生活了多长时间?【解析】A项超过6亿年;B项超过6千万年;C项超过6千年。根据常识可知恐龙在人类之前在地球上生活了超过6千万年,故选B。 反馈 收藏 ...
根据“We live on Earth.”可知,此处与“住在地球”有关,A选项“它是我们的家。”符合语境,故选A。 (2)题详解: 根据“Like the other seven planets, the Earth is running around the Sun.”可知,此处在“描述地球”,C选项“地球就像一个大球。”符合语境,故选C。 (3)题详解: 根据“Through the...
The sustainability of human populations.: How many people can live on Earth? We live on an over-crowded Earth whose population is 6 billion and rising. How many people can the planet feed, clothe and water? Is there a limit to the number that the earth can sustain? And have we passed...
Earthquakes may take place anywhere on the earths surface. During all earth quake, the vibrations make the earths surface tremble, and even crack open. Houses fall, people are lilled or injured and sometimes whole cities are destroyed.
How many branch offices do you have? It out, guys. So you have a lot of work to do on Monday. Yes. Our company start flexible schedule this summer. That's interesting. How do you work? We can to go. We can to start works as I live quite far from the office. I can start my...