英语四级备考中，阅读理解是考生复习的重点和难题，阅读理解部分的得分影响着考生四级成绩的好坏，我们为同学们整理了2023年12月四级阅读冲刺训练与答案解析（14），期望可以为大伙带来帮助。
2023年12月四级阅读冲刺训练与答案解析（14）
Antarctica has actually become a kind of space station – a unique observation post for detecting important changes in the world’s environment. Remote from major sources of pollution and the complex geological and ecological systems that prevail elsewhere, Antarctica makes possible scientific measurements that are often sharper and easier to interpret than those made in other parts of the world.
Growing numbers of scientists therefore see Antarctica as a distant-early-warning sensor, where potentially dangerous global trends may be spotted before they show up to the north. One promising field of investigation is glaciology. Scholars from the United States, Switzerland, and France are pursuing seven separate but related projects that reflect their concern for the health of the West Antarctic Ice Sheet – a concern they believe the world at large should share.
The Transantarctic Mountain, some of them more than 14,000 feet high, divide the continent into two very different regions. The part of the continent to the “east” of the mountains is a high plateau covered by an ice sheet nearly two miles thick. “West” of the mountain, the half of the continent south of the Americas is also covered by an ice sheet, but there the ice rests on rock that is mostly well below sea level. If the West Antarctic Ice Sheet disappeared, the western part of the continent would be reduced to a sparse cluster of island.
While ice and snow are obviously central to many environmental experiments, others focus on the mysterious “dry valley” of Antarctica, valleys that contain little ice or snow even in the depths of winter. Slashed through the mountains of southern Victoria Land, these valleys once held enormous glaciers that descended 9,000 feet from the polar plateau to the Ross Sea. Now the glaciers are gone, perhaps a casualty of the global warming trend during the 10,000 years since the ice age. Even the snow that falls in the dry valleys is blasted out by vicious winds that roars down from the polar plateau to the sea. Left bare are spectacular gorges, rippled fields of sand dunes, clusters of boulders sculptured into fantastic shapes by 100-mile-an-hour winds, and an aura of extraterrestrial desolation.
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.
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 地球以外的
11.aura 氛围
难句译注
1.Growing numbers of scientists therefore see Antarctica as a distant-early waning sensor, where potentially dangerous global trends may be spotted before they show up to the north.
see … as 把……看作。Where定从修饰Antarctic。
因此，愈加多的科学家把南极洲视为一个远距离早期报警敏锐器，在那里地球很多潜在的危险动向早在它们出现于北方以前就能发现。
2.The part of the continent to the “east” of the mountain
东指的使印度正南的这一部分。或山移动的那部分洲。
3.an aura of extraterrestrial desolation
应译为：与地球格格不入的一种荒凉隔绝的氛围。或与世隔绝的一种荒凉氛围。
写作办法与文章大意
这是一篇有关南极洲科研考察的重要程度的科普文章。使用因果，点面结合写法。第一提出：因为南极洲离得远远的污染，又不同于其它任何地方，常见存在着复杂的地质和生态环境，所以这块地方就可能得到更敏锐又易讲解的科学测量结果。它成了监察世界环境变化的察看哨和空间站，后面几段就写了进行考察的方面和结果。
答案解析
1.A 南极洲和环境问题。
B. 南极洲：地球最早的报警战。C.南极洲：与众不同的察看哨。D. 南极洲：神秘的地方。三项都是总内容众的组成部分。
2.D 国内西部成为一群岛屿。第三段“横断南极的山脉，有些高达一万四千多英尺，把这国内分成状况各异的两个区域。山脉以东的国内部分是由差不多两英里厚的冰层覆盖的高原;山脉以西，即美洲以南的半个国内也为冰层所覆盖。可是，这里冰层覆盖在大大低于海平面的岩石。假如西南极洲冰层消失，那这国内西部将成为稀疏的岛群。”
A. 国内西部将小时。B. 国内西部缩小。 D. 国内西部将成为分散的岛屿。
3.C 由于地球变暖和狂风劲吹。在第四段：“……这类干谷甚至在寒冬天节也极少有冰雪。它们插在南维多利亚陆地的山脉中，一度曾有从极地高原到罗斯海的深度为9000英尺的冰河。目前冰河已没有，非常可能是冰期之后一万年间地球变暖的结果。即便落入干谷的雪也被从极地高原咆哮入海的邪恶狂风吹散了。留下来的是裸露的壮观的峡谷，沙丘起伏的原野，被时速一百英里的大风雕刻成奇形怪状的大砾石，形成与世隔绝的荒凉景象。”
A. 邪恶的狂风吹走了雪。B. 它极少下雪。D.沙丘。这三项只不过干谷现象的一部分。
4.C 他们可能为地球上绿色区域带来了期望的信息。答案是第五段第一句“尽管干谷具备神秘的一面，科学家却相信他们可能为地球上葱绿的地方带来了期望的信息。”
A.干谷内什么都没留下。B. 干谷内从没冰河。D. 根据科学家的怎么看，干谷毫无用处。
以上是新东方在线英语四级频道我们为大伙带来的2023年12月四级阅读冲刺训练与答案解析（14），期望考生们获得出色的成绩，顺利通过四级考试。
