【正文】 by eating foods such as fish and milk, or from sunlight, which causes vitamin production in the skin. Melanin protects skin by absorbing sunlight, so sunlight absorbed by melanin cannot be used for vitamin D production. Therefore, a darkskinned person will produce less vitamin D than a lightskinned person when they received the same amount of sunlight.The connection between vitamin D production and skin colour is clear when we look at evolution. The earliest humans lived in Africa, their dark skin covered with hair. When they moved to places that had less sunlight, their bodies produced less vitamin D because of their dark skin. As a result, their skin made less melanin, so they could get enough sunlight to produce vitamin D. their skin gradually got lighter and they lost hair. Now, people who live in areas with strong sunlight, like Africa, have darker skin, while people living in other areas have lighter skin. The exception to this is the Inuit, who live in a place with little sunlight, but have dark skin because they eat a lot of fish and have enough vitamin D.Evolution has given us a rainbow of skin colours. Humans have always had melanin to determine our skin colour. What has changed through history is the environment where we have lived. This has in turn changed our melanin production, and eventually, skin colour. A World of Skin ColourBrief (71) ▲ People living in a particular (72) ▲ usually have the same skin colour and there are many different skin colours in the world.Reasons for skin colourThe reasons for different skin colours mainly (73) ▲ in biology and history.Biological reasonsl The amount of melanin, by which a person’s skin colour is (74) ▲ , varies from people to people. The more melanin a person has, the (75) ▲ his or her skin will be.l Vitamin D is another source (76) ▲ skin colour. Vitamin D is necessary for humans to build bones. Sunlight contributes to vitamin D production in the skin.Historical reasonsl The earliest people in Africa had dark skin with hair covering it because the sunlight is very strong.. l When they moved to places where they could not get enough sunlight to (77) ▲ vitamin D, their skin colour became lighter.l Generally speaking, people in areas with strong sunlight, have darker skin(78) ▲ people in other areas have lighter skin.(79) ▲ Melanin (80) ▲ an important role in our skin colour. With our living environment changing, melanin production is changed, which leads to the changes in our skin colour.A technical secondary school in Nanjing, east China’s Jiangsu province, planned to order Koreanstyle school uniforms for students, but parents opposed the move, believing that the new uniforms looked too good and would encourage early romances among the students, the Jinling Evening Paper reported Monday. Parents “My daughter was so excited about the Koreanstyle uniform, saying it’s her dream to wear miniskirt to school every day,” a mom surnamed Cheng plained. “My daughter also called her classmates to talk about how handsome the boys looked in the uniform!” Cheng looked on the Internet and found that most Korean schoolboy uniforms are similar to western suits. “They are so handsome! My daughter is a fan of Korean fashion, that’s why she is crazy about the uniform!” Cheng said.“If the students wear such beautiful uniforms, how can they study well? I prefer the sports wear which makes me think of health and positive thinking.”School “The plan to change the current school uniform from sports wear has been cancelled,” an employee of the school told the Jinling Evening Paper. “The students dislike the current uniform, so the school took advice from the students last November, knowing that most of students prefer Koreanor Japanesestyle school uniforms. We know cities like Shanghai and Guangzhou have changed their sports wear school uniforms to more fashionable uniforms,” an employee surnamed Lin said. “However, we had to stop the plan because many parents are strongly against it. Some parents think it’s just a way for the school to make money, and others think the new uniforms will take students’ attention away from their studies,” Lin said. When asked about the possibility of problems with early romance between students because of the more fashionable uniforms, Lin said he hadn’t considered it. He, however, agreed that the Koreanstyle uniform makes the students more charming. Students The students are very disappointed about the school’s final decision. They think the sports wear uniforms make them look androgynous (難分性別). They said the Koreanstyle uniform has many advantages such as raising interest in class。 lifting confidence。 improving solidarity and creating good temperaments. As for concerns about romance, the students believe that love is love and bears no relationship to the uniform. Education department “We don’t have a unified (統(tǒng)一的) standard for school uniforms. The schools can choose their own styles. Either sports wear or uniforms are ok,” an official from the Nanjing Bureau of Education said. TitleDo pretty school uniforms lead to early romance?Event A technical secondary school planned to order Koreanstyle school uniforms for students.Different (1) to itParents are strongly(2) the move.●With such beautiful designs,the new uniforms might (3) early romances between boys and girls.●In the new uniforms,students would fail to foceus their (4) on their studies.●It is just a way for the school to make money.Students are in (5) of the move.● The sports wear uniforms make them look androgynous.● Koreanstyle uniform can make them more (6) and more interested in class as well as improving solidarity and creating good temperaments