Health experts have long worried about the increasing rate of obesity in kids. It’s an imp

Health experts have long worried about the increasing rate of obesity in kids. It’s an important concern: Being very overweight or obese during childhood can lead to serious problems normally seen in adults, such as diabetes and high blood pressure. Poor diets and a lack of exercise are usually the causes. But would you ever have imagined there might be a connection between the bacteria that lived in your guts （内脏）when you were a baby and the chance that you would become overweight?
Scientists in Finland recently found just such a link. In a recent study, they showed that overweight kids had different species of bacteria living in their guts.
You probably think of bacteria only as germs that can make you sick. While it’s true that some bacteria can make people ill, your body actually depends on some types of bacteria to help you digest food and extract nutrients from it. These “good” bacteria live in your guts, where they process the food you eat.
Human babies get these bacterial helpers from their moms. When a baby is born, some of the bacteria in the mother move into the baby’s body. Growing babies get additional “good” bacteria from the milk their mothers produce. And it turns out the bacteria might play an important role in regulating weight just six years later.
So how could these bacteria affect weight? The researchers still haven’t tested that question, but future tests might lead to an answer.
【小题1】The “link” in Paragraph 2 refers to the relationship between .A．bacteria and the chance of being overweightB．obesity and diabetesC．diets and the chance of being overweightD．bacteria and exercise【小题2】Which of the following is NOT the function of “good” bacteria? A．Helping to digest food.B．Helping to take nutrients from food.C．Helping to regulate weight.D．Making a person ill.【小题3】The purpose of writing this passage is to .A．introduce the role of bacteria in children’s weightB．analyze the influence of obesity on kidsC．give advice on how to lose weight quicklyD．explain the function of bacteria in foodsA

(答案→)A 解析：【小题1】 A。从第一段的最后一句可知答案是A。【小题1】 D。D项不属于“good” bacteria的作用。【小题1】 A。本文作者主要介绍了bacteria对于孩子体重状况所起的作用，因此A项符合作者意图。

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