Unit 3 第六课时 Oral Communication, Reading for Writing 校本作业（教师版）

... Oral Communication, Reading for Writing I. 用英语写出下列图片相对应的食物。 1. 哥圃， 2. ‘·.,, 3. 4每塾 corn biscuit cαndy beef 5. 运革 6 雹萨哈 7. ？患 8. potαto cucumber bean hαmburger II. 从方框中选择适当的词并用其正确形式填空。 clear rid empty sleep though bad lifestyle ride 1. Though the old man is over 70 years old now, he keeps exercising eve可 morning. 2. 一－How do you like driving to work It’s fast. But in fact I prefer riding . It’s a kind of good exercise. 3. My parents and I all have healthy lifestyles . We seldom have sweets. 4. The music sounded lively and helped me get rid of my sad feelings at once. 5. I got up late today. What’s worse , I left my homework at home ! 6. The teacher changed my seat to the front , so I could see the words on the blackboard clearly 7. Students shouldn’t go to school with a( n) empty stomach. 8. I don’t like summer because the high temperature makes me feel sleepy in the afternoon. 皿．阅读理解。 题材：常走动能提升脑血流难度：食食食 建议用时：6 mins Blood flow（血液量） to the brain is ve叮 important for thinking. The brain carefully controls this flow, but small changes can still happen . Short-term drops in blood flow can make thinking and memo叮 （记忆） worse for a short time. Long-term drops can raise the chance of developing 些血些白. Sitting for a long time can cut down blood flow to the legs, but it was not clear whether it has an effect on blood flow to the brain or not. To find out, scientists did a new study with fifteen healthy office workers. The workers wore special medical tools to record blood flow to the brain. Over four hours, they did three different activities: in one , they sat all the time but bathroom breaks ; in another, they walked for two minutes eve叮 half hour; and in the last one, they walked for eight minutes after sitting for two hours. This helped the scientists see how blood flow changed at different times . The results showed that sitting for long time can cut down blood flow to the brain and it may be bad for long-term brain health. However, taking a two-minute walk eveηhalf hour can help keep or even make more brain blood flow. The study also found that carbon dioxide levels （二氧化碳浓度） or breathing did not cause changes in blood flow. This means that sitting and moving have effects on blood flow in other ways. So something else about sitting and moving was changing how blood got to the brain. The study also showed that breaks can be short but you should take breaks often. rain may thank you years later when you’re not sitting in an office chair all the time. 根据材料内容选择最佳答案。 45 ( C ) 1. What does the underlined word “ dementia” in Paragr叩h 1 mean A. A method to improve blood flow. B. A tool to record blood flow. C. A disease harming memo可 and thinking. D. A special form of daily physical activity. ( D )2. How many hours did the office workers have to spend in the study A. One hour. B. About two hours. C. Three and a half hours. D. ... ...