【正文】 about the history of this amazing desert. The satellites send down images, or pictures, of Earth. Some are taken by the SIRA radar system. It can make images that show what is under the ground, below the sand. These images have shown geologists that, in ancient times, there were lakes, mountains, and valleys where the Sahara is now. 名師診斷 專案突破 對點集訓(xùn) 決勝高考 So, the Sahara was not always a forbidding desert. Long ago, dinosaurs and giant crocodiles lived there. After the dinosaurs became extinct, gi raffes, elephants, hippos, and other animals lived in the Sahara. So did people. Then, about 6,000 years ago, the climate began to change. Within a few centuries, the Sahara became the desert that it is today. As the climate changed, fewer and fewer plants grew there, and the people had to move to places where there was more water. Satellite images help people make other discoveries in the Sahara. With these pictures, archaeologists can find where ancient people had their 名師診斷 專案突破 對點集訓(xùn) 決勝高考 settlements. Paleontologists— scientists who study fossils to learn about prehistoric life— use satellite images to help them find the best places to search for clues to life millions of years ago. 【語篇大意】撒哈拉沙漠面積 350萬平方英里 ,是世界上的第一大沙 漠。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 does the passage mainly deal with? and plants living in Sahara. and exploration with satellites. desert as big as the United States. why Sahara is so dry. 【答案與解析】 B 主旨題。文章的前 3段簡要介紹了撒哈拉沙漠 , 后面幾段主要講述了利用衛(wèi)星對沙漠的探索情況。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 does the underlined word “ explorers” refer to in Paragraph 4? . . . . 【答案與解析】 C 詞義推測題。根據(jù)上下文和 high in the sky— satellites可知該詞指的是“衛(wèi)星”。本句用破折號引出 explorers的 同位語 satellites。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 did experts know about Sahara?? s past? studying the formation of the sand there. looking at the desert in space. studying the satellite images. watching the fossils of animals. 【答案與解析】 C 細節(jié)題。根據(jù)第 5段可知 ,那些衛(wèi)星能夠通過雷 達系統(tǒng)拍攝撒哈拉沙漠地下和沙土里的東西 ,向地理學(xué)家揭示了沙 漠的歷史和變化。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 can infer from the passage that . dinosaurs died out because it was too hot rained a lot in Sahara a long time ago plants grew in Sahara a long time ago Sahara was full of life a long time ago 【答案與解析】 D 推斷題。根據(jù)第 7兩段可知很早以前撒哈拉 沙漠里有人、動物、森林和草原 ,所以“充滿著生命”。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 did people move from Sahara to other places? there was little water there. the animals were dangerous. thick forests grew there. it was too cold for people. 【答案與解析】 A 細節(jié)題。根據(jù)第 7段最后一句可知 ,人們離開那 里的原因是沙漠里的水因氣候變化越來越少。 名師診斷 專案突破 對點集訓(xùn) 決勝高考 Have you ever wanted to make your self movies and video games? The new Windows 7 Live might perfect for you. Microsoft launched its new program and say the new system is faster and much fun than the old one. According to Microsoft, children will find that easier to play and learn with Windows and designers at Microsoft worked hard to creating the program. With the new program, making movies and the other creative projects is something which anyone can do. Mi crosoft engineers have also created a game calling Kodu. It lets children create their own world and the characters in it. Microsoft hopes to change why children use puters. Ⅱ .短文改錯 名師診斷 專案突破 對點集訓(xùn) 決勝高考 【答案】 Have you ever wanted to make your ? movies and video games? The new Windows 7 Live might ? perfect for you. Microsoft launched its new program and ? the new system is faster and ? fun than the old one. According to Microsoft, children will find ? easier to play and learn with Windows and designers at Microsoft worked hard to ? the program. With the new program, making movies and the other creative projects is something ? anyone can do. Microsoft engineers have also created a game ? Kodu. It lets children create their own world and the characters in it. Microsoft ownselfbe?sayssay moremuchitthatcreatecreatingthatwhichcalledcallinghopes to change ? children use puters. howwhy名師診斷 專案突破 對點集訓(xùn) 決勝高考