Unit 9 It's important to have good habits Section B课时同步练习（2课时，含答案）

Unit 9 It’s important to have good habits. Section B 2a-2e 第1课时 一、词汇填空 （一）根据句意和首字母提示或汉语提示完成单词。 1. My father likes to have a n_____ at noon every day. 2. A helping b_____ that I often do with my daughters is picking up rubbish in our neighborhood. 3. Do you know how your friends got t_____ the winter holiday 4. Do you have a lot of _____(压力) at school 5. Why don't you _____(锻炼) more often （二）用所给单词的适当形式填空。 6. The more you exercise, the _____ (health) you will become. 7. I need to exercise _____ (regular) than before. 8. It’ necessary for us _____ (finish ) homework on time. 9. I heard him _____ (sing) when I passed his room. 10. They are made _____ (work) nine hours a day . 二、综合填空 阅读下面短文, 掌握其大意, 选出能填入短文相应空白处的最佳选项。 sleep, who, sit, similar, active, off, raise, how, little, kind In today’s world, sleep experts often say that for a better night’s rest, Americans should turn (1)_____ their smart phones or iPads before sleeping. Such electronic products make the brain more (2)_____, and then influence their sleep. But according to a latest survey, more than 90% of Americans often use a computer or some other (3)_____ of electronic products in the hour before bed. Researchers find that man-made light from some electronic products at night may reduce the brain chemicals that help (4)_____. In the study, the researchers let volunteers read, play games and watch movies on a screen for different time while measuring (5)_____ much light their eyes received. They found that two hours of (6)_____ before a bright screen at night reduced the sleep chemical levels by about 22%. Then the researchers studied the college students (7)_____ often used computers at night. They got the (8)_____ results. And researchers say that may not only cause sleeplessness, but also (9)_____ the risk of obesity(肥胖症), diabetes(糖尿病) and other diseases. To be on the safe side, the researchers suggest that we should use computer (10)_____ than before, or turn down our screens as much as possible before sleeping. 三、阅读理解 A It was the beginning of the school holidays and Benny was looking forward to spending time with his friends from his neighborhood. He was very upset when his mother told him that he was going to stay at his grandparents’ house as both she and his father were going on a business trip. He had no friends there and had no computer games to play. However, he had no say in the matter. Benny loved his grandparents but they were too old to take him out or play games with him. His younger sister was not interested in the same things as he was. She only liked to play with her toys. At the very beginning, Benny killed time by doing his holiday homework. However, after a few days, he finished all his holiday homework. Soon he got restless(不耐烦的). One day, Benny was feeling very bored. Suddenly an idea flashed across his mind. He decided to take a bus back to his neighborhood to ... ...