2013年职称英语卫生类阅读理解模拟题(4)_第2页

　　Despite the unearthly aspect of the dry valleys, some scientists believe they may carry a message of hope of the verdant parts of the earth. Some scientists believe that in some cases the dry valleys may soak up pollutants faster than pollutants enter them.

　　1. What is the best title for this passage?

　　A Antarctica and environmental Problems.

　　B Antarctica: Earth’s Early-Warning station.

　　C Antarctica: a Unique Observation Post.

　　D Antarctica: a Mysterious Place.

　　2. What would the result be if the West Antarctic Ice Sheet disappeared?

　　A The western part of the continent would be disappeared.

　　B The western part of the continent would be reduced.

　　C The western part of the continent would become scattered Islands.

　　D The western part of the continent would be reduced to a cluster of Islands.

　　3. Why are the Dry Valleys left bare?

　　A Vicious wind blasts the snow away.

　　B It rarely snows.

　　C Because of the global warming trend and fierce wind.

　　D Sand dunes.

　　4. Which of the following is true?

　　A The “Dry Valleys” have nothing left inside.

　　B The “Dry Valleys” never held glaciers.

　　C The “Dry Valleys” may carry a message of hope for the verdant.

　　D The “Dry Valleys” are useless to scientists.