Lesson 13 Preview "There is only one earth"

The author of this book is British economist B Ward and American microbiologist R Dubos.

"There is only one earth" is a resounding slogan put forward by 1972 at the human environment conference held in Stockholm, Sweden. Based on this topic, this paper introduces the relevant knowledge of the earth from the perspective of human survival, clarifies the fact that there is only one earth for human survival, and calls on human beings to cherish resources and protect the earth.

The text has distinct layers and clear context. First of all, the introduction of the earth begins with the scene of astronauts watching the earth in space. Then, from the aspects of the earth's smallness in the universe, its limited natural resources, uncontrolled exploitation or random destruction, it shows that the earth is facing the threat of resource depletion.

Then it is proved by the research results of scientists that when the earth's resources are exhausted, human beings can't move to the second suitable planet at present. Finally, tell readers that human beings should carefully protect the earth and its ecological environment. "Earth Words" scientifically introduces many aspects of the earth and effectively explains the fact that there is only one earth by enumerating numbers and giving examples.

Extended data:

Good words in the article:

Crystal clear: bright and transparent. In this paper, the appearance of the earth is bright and transparent. ?

Resources: Natural sources of means of production or means of subsistence. ?

Minerals: Natural compounds and a few natural elements existing in the earth's crust, with relatively fixed chemical composition and properties. Most of them are solid (such as iron ore), and some are liquid (such as natural mercury) or gas (such as helium).

Gift: It used to refer to the reward given by the emperor, but now it generally refers to charity out of pity. ?

Abuse: To use indiscriminately or excessively. This article refers to the abuse or overuse of chemicals. ?

Threaten: to force or intimidate people into submission by force. The destruction of natural resources and a series of ecological disasters will do great harm to human survival, and even make it impossible for human beings to survive in the end.

Generosity: Generosity (kāng) and generosity (kǐ i) mean full of justice and passion; Not stingy. The antonym is stingy and the synonym is generous. For example, the ocean generously gives mankind abundant aquatic products and indispensable daily salt. Generosity is a kind of giving, and it is also a kind of giving without asking for anything in return.