Lesson 23 Rime What is the main content of this text?

In this paper, the magnificent and peculiar scene of rime in Jilin is described in vivid language, and the reasons for the formation of rime spectacle are explained.

Rime is an article describing the beautiful scenery of Rime in Jilin. There are not many sentences that directly describe the rime scenery in this paper. There are only three natural paragraphs in the full text, and the beauty of rime is directly pointed out at the beginning; Then it discusses the causes and process of the formation of Jilin rime; Finally, the author praised what he saw.

Rime is not ice or snow, but the result of fog on branches and other objects freezing below zero degrees Celsius and viscous water vapor piling up with the wind, which shows as white opaque granular structure deposits. The formation of rime requires low temperature and sufficient water vapor, and it is even more rare to have these two extremely important and contradictory natural conditions for the formation of rime.

Extended data:

There are not many sentences that directly describe the rime scenery in this paper. There are only three natural paragraphs in the full text, and the beauty of rime is directly pointed out at the beginning; Then it discusses the causes and process of the formation of Jilin rime; Finally, the author praised what he saw. Judging from the paragraph composition of the text, the focus of teaching is to let students feel the beauty of Jilin rime through a few words, but the difficulty is the cause and process of Jilin rime.

Rime is a kind of white or milky opaque ice layer attached to the windward surface of ground objects (such as branches and wires). Because there are many gaps between water droplets in the rime, the rime is completely opaque white. The rime is pale and white, attached to trees and objects, just like a silver flower of a tree, delicate and elegant. This is the tree hanging (also known as the snow hanging).

When people watch rime in Jilin, they will feel that the air is particularly fresh, refreshing and moist, like a Yushu and a beautiful flower. This is because rime has the innate function of purifying air. There are a lot of invisible particles in the air, most of which are below 2.5 microns in diameter, which is about one fortieth of the diameter of human hair. They are small, light and suspended in the air, which is harmful to people's health.

Baidu encyclopedia-rime