题目内容
1．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．Coral are some of the most vulnerable 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---Sprawing 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 150glaciers，but by 2005it 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？!
21．According to the text，what is causing coral's death？C
A．Rising sea levels
B．Humans'diving activities
C．Rising sea temperatures
D．The shrinkage（缩小）of their habitats
22．What can we infer from the part of"Venice"？B
A．Venice is the only coastal city of Italy
B．Many places are in the risk of sinking below the 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
23．What can we learn about Glacier National Park from the text？A
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
24．Which site's shrinking reason differs from the other sites？D
A．The Great Barrier Reef B．Venice
C．Glacier National Park D．The Amazon．
分析 本文属于广告类阅读，作者通过这篇文章向我们介绍了如今全球变暖所引发的一些问题．
解答 21．C 细节理解题，根据第二段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可知珊瑚虫死亡的原因是因为海水温度升高，故选C．
22．B 细节理解题，根据第三段Rising sea levels are in fact a serious threat to many coastal cities located at sea level可知海平面的升高威胁这很多沿海的城市，故选B．
23．A 细节理解题，根据第四段Located in Montana，Canada，this park is over a million acres and has a huge plant and wildlife population．可知冰川自然公园在蒙大拿州占据了很大的面积，故选A．
24．D 细节理解题，根据最后一段Our expansion usually requires cutting down forests for land，fuel and materials，but rarely considers the consequences可知亚马逊雨林的减少是因为人类领地的扩张，根据The Great Barrier Reef---Rising air temperatures will cause sea temperatures to rise as well；Rising sea levels are in fact a serious threat to many coastal cities located at sea level；As temperatures rise，the glaciers and ice melt，which will upset the ecosystems sustaining over a thousand plant species and hundreds of animals可知其他三个景点正在消失的原因是气候变暖，故选D．
点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
