Lesson 16, Book 2, Grade 3, What else can Xiaozhen's hair do?

Really, long hair can be turned into a long kite string, which can be used to fly kites.

Really, long hair can be turned into a long rope, and students can jump rope on it together. It's so funny.

Hair is mainly used to protect the head besides enhancing the aesthetic feeling. Soft and fluffy hair is elastic, which can resist light collision and help head sweat evaporate. The average person's hair is about 654.38+ ten thousand. Of all the hairs, the length of hair is the longest, especially for women with long hair. Some can grow to 95 ~ 100 cm, or even 150cm, but generally it will not exceed 200cm.

Hair color is generally determined by genes, such as black, golden yellow, brown and red. When people get old, their hair usually turns silvery white. Due to different races and regions, hair is black, golden, reddish brown, reddish brown, yellow, gray, and even green and red. Scientific research has proved that the color of hair is related to the difference of metal elements contained in hair.

Black hair contains equal amounts of copper, iron and melanin. When the content of nickel increases, it will turn gray. Blonde hair contains titanium, reddish-brown hair contains molybdenum, reddish-brown hair contains cobalt besides copper and iron, and green hair contains too much copper. In some African countries, some children have red hair, which is caused by the serious shortage of protein.