UNIT 4 TOPIC 3 Section C 习题.doc

Unit 4 Amazing ScienceTopic 3 Section C习题一、短文填空阅读下列短文，根据短文内容及首字母提示补全文中所缺的单词，答案写在题后的横线上。As teenagers, you have many dreams. These dreams can be very big, such as winning the Nobel Prize, or they can be small. You may just want to become one of the ten best students in your c_1_. Once you find a dream, what do you do w_2_ it? Do you ever try to make your dream real? Follow Your Heart by Australian writer Andrew Matthews tells us that m_3_ our dreams real is lifes biggest challenge.You may think youre not very good at some school subjects, or that it is impossible for you to become a writer. These kinds of thoughts p_4_ you from getting your dream, the book says.In f_5_, everyone can make his dream come true. The first thing you must do is to remember what your dream is. D_6_ let it leave your heart. Keep telling yourself what you want. Do this step by step and your dream will come true faster because a big dream is, in fact, many small d_7_. You must also never give up your dream.There will be difficulties on the road to your dreams. But the biggest difficulty comes from yourself. You need to d_8_ what is the most important. Studying instead of watching TV will l_9_ to better exam results, while saving five yuan instead of buying an ice cream means you can buy a new book. As you get c_10_ to your dream, it may change a little. This is good as you have the chance to learn more skills and find new interests.1._ 2._ 3._ 4._ 5._6._7._ 8._ 9._ 10._二、根据短文意思和所给字母，写出一个完整正确的单词。As everyone knows, （1）e_ fast walk or slow walk does good to the muscles and lungs of human. So people walk in build up their body, or to lose（2）w_. But only some of them know that taking a walk every day is also good for（3）p_ mans heart. Heart attack has become the first disease in the world（4）b_ more and more people suffer from it.Taking a walk can improve the blood supply to our hearts. If you try to walk as（5）o_ as possible, youll have a healthier heart.1._ 2._ 3._ 4._ 5._三阅读理解 Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.1. Satellites travel _.A. in space B. in the atmosphere C. above the ground D. above space2. Why do we use the weather satellites to take pictures of the atmosphere? Because _.A. the weather satellites can do it easily B. clouds form thereC. the weather forms there D. the pictures can forecast the weather3. Meteorologists forecast the weather _.A. when they have received satellite picturesB. after they have compared new satellite pictures with earlier onesC. before they received satellite picturesD. during they study satellite pictures4. Maybe well soon be able to forecast the weather for _.A. one day B. two days C. five days D. seven days or even longer5. The main（主要的）idea of this passage is that satellites are now used in _.A. taking pictures of the atmosphere B. receiving pictures of the atmosphereC. do