【正文】 eigh the same. Colors can affect (影響 ) learning. Scientists have found that students spend more time reading if they read information written in blue text. Blue helps most people calm down and think more. Clever uses of colors in daily life are to be seen everywhere. Hospitals and libraries seldom paint their walls, tables and desks red. They use light colors, like light blue or green. Red makes people excited while light colors help them relax. Haven’t worked out how color affects your daily life? Start with your small room. Try to make some changes in it and you’ll get to know how important color is![ 71. The underlined word “mislead” means _____. A. affects B. effects C. causes someone to have a wrong idea D. give wrong directions[ 72. We’d better paint the walls of the hospital in _____. A. light blue or light green B. deep red or deep brown C. deep orange or deep red D. light green or light yellow 73. If you want to ______, you’d better sit in the room painted blue. A. weigh something with your hands B. study attentively C. face the lake or the sea D. enjoy some rock music 74. Which of the following is NOT true? A. When you are going to have a rest, you’d better sit in the room painted green B. Scientists have known some differences among some colors C. When you get tired of homework, you should look at the green plants far away D. The passage has told us clearly why some colors are warm and other colors are cool. 75. The reading mainly shows us _____. A. the difference between red and blue B. how to get on well with others C. how to make smart uses of different colors in our daily life D. how to paint and decorate our rooms [ Passage 3 A smile will tell people around you that you are a kind and friendly person. However, many people don’t smile because they think they have ugly teeth. For example, one of my classmates, Mike, doesn’t have very nice teeth, so that is why he seldom opens his mouth. He even says that he has lost confidence because of his teeth. So it is very important for us to look after our teeth. In fact, a lot of people have this problem. Some people inherit teeth problems from their parents, while others’ teeth are damaged because of bad habits, like heavy smoking, eating too much sugar or not brushing teeth often. If your teeth are in bad shape, you should see a dentist and ask for help. They can help improve your teeth and tell you how to take care of them Smiling can help you to feel more confidence and make people think of you as a more friendly person. If you want to keep healthy, you should not only smile but also laugh. An Indian doctor called Kataria said that young children should laugh about 30 times a day, while adults should laugh between 7 and 15 times a day. So please take this chance to smile and laugh now. 76. What has made Mike lose his confidence? A. His bad habit B. His bad teeth C. Not smiling D. Eating too much sugar 77. Many people don’t smile because ______ A. they don’t like smiling B. they think they are ugly C. their teeth are not beautiful D. they can’t open their mouths 78. What can a dentist do according to the passage? A. A dentist can tell you how to improve your bad teeth. B. A dentist can help you to take care of your bad teeth. C. A dentist can tell you how to brush your teeth. D. Both A and B 79. If you want to keep healthy, you had better _____ A. not smile often B. laugh all the time C. neither smile nor laugh D. smile and even laugh often 80. How many times should a child laugh every day in doctor Kataria’s opinion A. Either 20 or 30 times a day B. Between 7 and 15 times a day C. Around 30 times a day D. Only 30 times a day Passage 4 How dangerous it would be if there was a fire! Today is in winter. It’s time for us to learn a lot more about fire, especially what to do if we are caught in a fire: 1. Shout out If you smell smoke or see fire, shout out “Fire!” Shout as loudly as you can, because people may be asleep. 2. Call 119 Never try to put the fire yourself, even if it is a very small one! Get help from your parents or call 119. 3. Keep down close to the floor If there is a lot of smoke in your room, keep down close to the floor. 4. Test the door Test the door before you open it. If the door is cool, open it carefully. If the door is hot, do not open it! Try to find a different way out. 5. Get out If you can, get out of your home as soon as pos