Heredity (遗传) is not the only thing that influences our color. Where and how

游客2023-07-20 53

问题 Heredity (遗传) is not the only thing that influences our color. Where and how we live after we are born is【B1】______too. For instance, our skin color greatly 【B2】______on how much sunshine we get.
Centuries ago, most people in Europe were peasants and had to work in the fields all day. On the other hand, noblemen did not have to work. They stayed【B3】______and remained pale. You could always【B4】______a nobleman from a peasant because the peasant had a tan. As a result, noble women did their best to keep their skins as【B5】______as possible. A skin so pale was considered a mark of great【B6】______and nobleness.
During the Industrial Revolution, farmers left their fields and went to work in factories,【B7】______and mills. Working for long hours in those dark places made their skins pale. Wealthy people, however, could【B8】______to travel to sunny countries.【B9】______. In Western Europe and North America pale skin is no longer desirable. 【B10】______.
So there are three answers to the question "Where does our color come from?" — It comes from the genes we inherit It comes from the conditions in which we live. 【B11】______ [br] 【B7】

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答案 mines

解析空后的and表明，本空所填词与factories和mills并列，故本空应填一表示工作场所的复数名词。

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