根据极限的单调有界准则以及三角函数知识，下面正确的是：（ ）
我们老祖宗却认为“天圆地圆”，有黄道、赤道。两千多年前，诗人屈原在其著作《天问》中引证天是圆的，地也是圆的。他说： 九天之际，安放安属隅隈多有，谁知其数 九天是指坐标，就是昊天(东)、阳天(东南)、赤天(南)、朱天(西南)、成天(西)、幽天(西北)、玄天(北)、鸾天(东北)、钧天(中间向上...
Where did life originate on the earth ? 01:29 According to the evolutionary theory, formation of a new species is g... 01:42Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths Cengage Solutions for Maths DC Pandey Solutions for Physics HC Verma...
Where did the Fibonacci sequence originate? Fibonacci Sequence: The Fibonacci sequence is a pattern of numbers which is based on the natural world. For example, the number of seeds in the rows of a sunflower and the number of petals in many flowers follow the Fibonacci sequence. ...
Where did the holiday originate (起源) ? Here is a story.In 1922,a very kind man in Cleveland, a city in Ohio of America,thought that many poor people in the city needed care from others.He wanted them to be happy and he hoped they would find people always remembered them and cared...
Where did the month originate from?Here's one last fact – the word 'month' itself is related to the moon. It originally measured how long it took for the moon to complete a cycle around the earth, so 'moon' and 'month' come from the same root....
Where did Komodo dragons originate from? Where is an octopus' habitat? Are there crocodiles on Fraser Island? What does a reef shark eat? What do coral snakes eat? What continent did most marsupials evolve on? What animals live in Uluru?
“Protecting the Amazon is a global responsibility, not only the responsibility of those who live there. In Brazil, when we talk about Indigenous rights, we are talking about land rights. All the other rights to health, education, etc., originate from the rights to our ancestral lands.” (...
water ink promotional film is the water ink animation promotional film, it is by Chinese tradition Shui Mowei the manifestation advertisements propaganda short film, belongs to the water ink animation one kind, its manifestation and the humanities connotation originate from the Chinese tradition[...
But where did the term sunbreak originate? The term itself describes the sun peeking through a nearly solid cloud cover. Here is a look at the history of the term sunbreak. More Ted:There really is a difference between rain and showers ...