1、 课时巩固提升In the past two months the world has come across a chain of earthquakes of high magnitudes(震级). With the destructive(毁灭性的)7. 0 earthquake hitting Haiti in January which took away more than 200, 000 precious lives, the world saw three other earthquakes following in close chain. The 7. 0 magnit
2、ude earthquake near Japan, the massive 8. 8 earthquake near Chile on Saturday, and a 6. 4 near Taiwan after that, all make usshudder. Geographical(地理学的)studies state that several million earthquakes shake the earth every year. Before we head into earths crust(地壳)and earthquakes, lets have a quick lo
3、ok at what is the earth made of. The earths crust is not actually one thick blanket, instead its something like a puzzle, with pieces coming together to form one picture. The size of these puzzle pieces or plates can vary from a few hundred to thousands of kilometers across while the thickness may d
4、iffer from less than 15 km to 200 km. When these plates underline the oceans, they are named as oceanic(海洋的)plates. As the mantle(地幔)within the earths crust moves in the deeper part of the earth, the plates begin to move as well. They begin to pull away from each other, bump into one another or slid
5、e past one another. These movements of plates are quite slow. The movement is usually the same speed as how our fingernails grow. Its when these plates run into each other that rock layers are forced upwards in the form of mountains. Earthquakes happen when these plates move under, slide past one an
6、other or run into one another. Earthquakes occur at the edges of the plates, and more commonly at the edges of large plates forming the earths crust. 【语篇概述】众所周知, 地震给人类带来了很大的危害, 本文主要向大家介绍了地震形成的原因。. Whats the main idea of the passage? The passage mainly tells us . 答案： how the earthquake takes place. A
7、ccording to the passage, choose the best answers. 1. The passage takes the recent four earthquakes for example to_. A. introduce some famous placesB. make us more curious about what causes earthquakesC. make us realize the destruction caused by earthquakesD. tell us the differences of the earthquake
8、s in different places【解析】选 B。推理判断题。第一段说到了近期世界范围内几次影响比较大的地震, 但是文章的主体是第二段和第三段, 说的是地震的形成背景和过程, 所以从接近生活实例的地震说起 , 会引起读者的兴趣。2. The underlined word“shudder”in the first paragraph can be replaced by“_”. A. climb B. start C. follow D. shake【解析】选 D。词义猜测题。第一段说到了海地 7 级地震的危害之大, 而智利的 8. 8 级地震的危害可想而知 , 所以单词的词义应是“发
9、抖, 颤栗”。3. Which of the following is TRUE? A. The earths crust is made of one blanket. B. The earths crust made people puzzled for years. C. The earths crust is divided into several parts. D. The earths crust is of the same thickness. 【解析】选 C。细节理解题。从第二段第二句“The earths crust is not actually one thick b
10、lanket, instead its something like a puzzle, with pieces coming together to form one picture. ”可知答案。. Translate the following phrases into Chinese. 1. in the past _2. come across _3. take away _4. have a quick look at _5. differ from _6. in the form of _7. run into _8. at the edges of. . . _答案：1.在过去2.偶然遇见; 偶然碰到3.拿走; 带走4.快速浏览5.与不同6.以的形式7.撞上; 遭遇8. at the edges of. . . 在边缘
