2018-2019人教新目标高中英语选修六课后阅读训练 十二 unit 3 period 4 word版含答案
13页1、温馨提示: 此套题为Word版,请按住Ctrl,滑动鼠标滚轴,调节合适的观看比例,答案解析附后。关闭Word文档返回原板块。课后阅读训练 十二Unit 3Period 4. 阅读理解ANow, we know that if we do not get enough vitamins, we are at risk of developing a number of diseases. As a result, vitamin supplements(补品), though expensive, are popular with people who worry that they are not getting enough vitamins from the foods they eat. But contrary to what many people think, medical experts have found little evidence that most supplements do anything to improve health or protect ag
2、ainst disease. In fact, medical experts warn that taking too many of some vitamins can be harmful. For example, too much vitamin E can cause bleeding. People should discuss what vitamins they take with their doctors, as some vitamins can produce harmful side effects when mixed with medicines. Experts, however, do say that sometimes vitamins can help prevent disease. People who know they lack a particular vitamin should take vitamin supplements. Some older adults, for example, may not have enough
3、 vitamin B-twelve. This is because, as people get older, their body loses its ability to take it from foods. Also, people who spend much time inside may need some extra vitamin D as the skin makes this vitamin from sunlight. Different vitamins are found in different foods. Vitamin A is found in fish liver oil. It is also in the yellow part of eggs. Sweet potatoes, carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A. Vitamin B-twelve i
4、s found in green leafy vegetables and other foods, like fruits. Vitamin K can be found in pork products. In fact, for most people, a balanced diet can ensure enough of the vitamins our bodies need. So, it is important for us to eat a mixture of foods every day to ensure that we get enough vitamins our bodies need. 【语篇概述】本文是说明文。文章说明了维生素对人体健康的益处, 并指出平衡饮食可以得到足够的维生素。1. What is probably talked about before this passage? A. How many vitamins a persons body needs. B. How many vitamins some foods contai
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