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.

　　Vocabulary

　　1. distant-early-warning sensor 远距离早期报警传感器

　　2. plateau 高原，高地

　　3. slash 挥砍

　　4. blast 一阵疾风/狂风

　　5. vicious 邪恶的，凶魔般的

　　6. gorge 峡谷

　　7. ripple 起伏，使起微波

　　8. sand dune 沙丘

　　9. verdant 绿色

　　10. extraterrestrial 地球之外的

　　11. aura 气氛

　　参考答案：

　　1. A 　　2. D 　　3. C 　　4. C

(责任编辑：田学江)