Determine the center and write the profound meaning. We should try our best to dig out the philosophy of life contained in the written events or find out its bright spots, think repeatedly and determine the central idea of the article. Is that he is good at writing profound meanings from ordinary little things.
The six elements of the article should be made clear. The occurrence of a thing can not be separated from six aspects: time, place, people, cause, process and result of the thing, which is the so-called "six elements". Only by explaining these aspects clearly can readers have a clear and comprehensive understanding of the things described.
Text:
Be practical in life.
Because the tortoise saw swans flying in the blue sky and wanted to fly, even without wings, he let two swans hold a stick and bite it with their mouths, so that he could fly to the sky. When in mid-air, the tortoise was very happy and said, "I can fly, too." With one mouth, it fell and became a flower. Be practical in life.
Extended data:
The educational purpose and knowledge of turtle story;
Nutrients needed by turtles:
Protein is the most important to the growth and development of turtles. Turtles take egg whites directly from feed. It is generally believed that the high content of protein in feed will make the feed have good nutritional value and the breeding objects grow fast. Soft-shelled turtle has a high demand for protein content in feed, and the demand is different at different growth stages. Generally, the content of protein in feed is required to be 38% ~ 42%.
Fat is one of the indispensable ingredients for the growth and development of soft-shelled turtle. Mainly used as body fat stored in the body or as an energy source for exercise. Generally, the thermal energy released by fat oxidation of soft-shelled turtle is twice that of sugar and protein. The experiment shows that the fat content in turtle compound feed is 3.5% ~ 5.0%. Too high or too low will affect feed efficiency, weight gain rate and meat weight gain coefficient.