Unit4 Global warming（课件+练习含解析3份打包）新人教版选修6

Unit 4　Global warming Ⅰ.阅读理解 Soon enough,we will lose some of the most amazing sites on Earth! The Great Barrier Reef—Rising air temperatures will cause sea temperatures to rise as well.All life supported by the oceans will be affected with this shock to their ecosystem.Corals are some of the most vulnerable (易受伤害的) marine animals and we are already watching whole reefs disappear.The Great Barrier Reef in Australia is no exception and will continue to shrink as the temperatures rise! These reefs are some of the best in the world for diving,but they will soon disappear! Venice—Sprawling across(横跨)hundreds of small islands in Northeast Italy,Venice is at extreme risk of sinking into the Adriatic Sea.Rising sea levels are in fact a serious threat to many coastal cities located at sea level.Lucky for us,however,Venice is developing a series of sea walls to protect the city in times of high tide. Glacier(冰川)National Park—Glacier National Park was once covered by over 150 glaciers,but by 2005 it only had about 27! Located in Montana,Canada,this park is over a million acres and has a huge plant and wildlife population.As temperatures rise,the glaciers and ice melt,which will upset the ecosystems sustaining over a thousand plant species and hundreds of animals. The Amazon—The cause behind the disappearance of these fantastic places ultimately comes down to humans.Our expansion usually requires cutting down forests for land,fuel and materials,but rarely considers the consequences.These forests are sources of food and medicine for just about everyone on the planet! What will happen if we lose these valuable places and beautiful destinations?! 1.According to the text,what is causing corals’ death? A.Rising sea levels. B.Humans’ diving activities. C.Rising sea temperatures. D.The shrinkage(缩小)of their habitats. 2.What can we infer from the part of “Venice”? A.Venice is the only coastal city of Italy. B.Many places are in the risk of sinking below sea level. C.Venice will never sink because of the protection of sea walls. D.Italy consists of hundreds of small islands in the Adriatic Sea. 3.What can we learn about Glacier National Park from the text? A.It covers a large area in Montana. B.It is covered by over 150 glaciers. C.Plant species and animals in it have died out. D.It doesn’t support any living thing for its cold. 4.Which site’s shrinking reason differs from the other sites? A.The Great Barrier Reef. B.Venice. C.Glacier National Park. D.The Amazon. 语篇解读:这是一篇介绍说明类文章。文章介绍了因为气候变暖或者人类活动正在消失的几个景点。 答案及剖析: 1.C　细节理解题。由第二段中的“Rising air temperatures will cause sea temperatures to rise as well.All life supported by the oceans will be affected with this shock to their ecosystem.Corals are some of the most vulnerable marine animals and we are already watching whole reefs disappear”可知,气候变暖导致海水温度上升。靠海洋生存的所有生态系统都受到影响。珊瑚虫是最脆弱的海洋动物之一 ... ...