Just a couple of days ago, climbers, backed by United Nations Environment Program (UNEP), returned from the Himalayas, where they gathered first-hand accounts from monks, local people and other travelers on the state of the environment of the world's most
题目
Just a couple of days ago, climbers, backed by United Nations Environment Program (UNEP), returned from the Himalayas, where they gathered first-hand accounts from monks, local people and other travelers on the state of the environment of the world's most famous mountain range. They have recorded in words, in photographs, and on film, the dramatic impacts that global warming is having on glaciers, causing them to rapidly thaw, and build up melt waters in mountain lakes. As a result, these lakes could soon burst, sending millions of tons of water and rubble swirling down the valleys threatening life and limb. // The expedition has also looked at the impacts of tourism on the mountains, concluding that much of what is happening is environmentally damaging, and a burden on the people, wildlife and landscapes of these once pristine wilderness areas. //
Every year World Environment Day is an occasion to pause and reflect on the state of the environment. This year especially, faced with the findings of our climbers, in the International Year of the Mountains, I urge you to "Give Earth a Chance". I ask you to look at our daily impact on the planet and its peoples, and to take action to improve our environmental behavior. //
Although mountains have been revered since time began, such beliefs are no longer enough to preserve fragile mountain ecosystems, for the well-being of all. We face an immense challenge, the challenge of ensuring their stability and preservation for the generations to come. //
Mountains are our water-towers. Mountains are a major source of energy. Mountains feed those living on them. Mountain ecosystems are linked to life in the lowlands, to freshwater and to the seas. Mountains are islands of rich biological and cultural diversity, home to unique plants, animals, languages and traditions. //
Sustainable development is a must. We need to combine the environmental dimension with social activity and economic development. This must be our common target, especially in mountain regions. Without sustainable development we cannot solve the problems. It is not enough to simply say we have a conservation plan for nature, and natural resources. // We must give people a chance to live and survive in these regions, therefore we need jobs; we need a perspective for young people to remain there and not go to the big cities. Mountains are virtual treasure chests of untapped economic potential—vital to sustainable development. This was recognized by the Earth Summit in Rio. //
Mountains attract tourists, but tourism has to be well managed to minimize impact on sensitive mountain environments. Respect should be the byword of the tourists, and tour operators, that bring people into contact with local people and landscapes, //The respect includes paying local people a decent wage, sourcing local food and materials where possible, and observing local customs, beliefs and traditions. Tourists are guests in other peoples' ecosystems and should behave as such. Mountains as a resource HAVE to be valued, and some of that value has to benefit mountain dwellers. Earnings from tourism should be shared equitably between all stakeholders. //
Especially this year, the International Year of Ecotourism, every effort should be made to promote Ecotourism in mountains. For some communities and regions, sustainable tourism can be a first step towards sustainable development. Let us hope that all societies will come to revere mountains, and thus be motivated to invest in them, preserve this unique asset, and in turn reap benefit from it. //
On this World Environment Day let us all begin to act for the conservation not only of the mountains, but the sea, the land, water and the air too. Let us act to give the Earth a chance. An unpolluted pristine environment is vital to our survival, a precious resource, which will only endu
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第1题：
A military member has just returned to the United States from Europe and reports their personaldesktop computer does not work. Which of the following is the MOST logical solution to thisproblem?()A. The computer is unable to work in the US because of EU licensing arrangements
B. The power supply needs to be replaced with one rated for 110 watts
C. The power supply needs a power inverter to handle the change in cycles
D. The power supply voltage needs to be switched to 110 from 220
参考答案：D
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第2题：
It's the paintings in Louvre______Da Vinci worked on for years______have become a fascination to people from all over the world.A.where; that
B.that; when
C.that; that
D.where; when答案：C解析：本题考察强调句和定语从句，题目意为“正是在卢浮宫中陈列的那些达·芬奇多年辛苦耕耘的画作，成为世界各地人民为之入迷的胜景。”全句结构为强调句，如果将it is/was...与连接词去掉，句子仍然正确，就为强调句型。这时，就选用that连接词；否则，就为定语从句，其关系词的选择，应根据先行词与从句的关系而定。由此判断此句为强调句。被强调的成分the paintings in Louvre______Da Vinci worked on for years是定语从句，从句作定语修饰paintings，先行词只能用that。
考点
定语从句 -
第3题：
共用题干
第三篇
Alaska
In 1959 Americans welcomed Alaska into the Union as the 49th state,symbolizing a change of attitude from that held in 1867, when the peninsula（半岛）was purchased from Russia.Then, most Americans had little interest in 1,500,000 square kilometers"of icebergs and polar bears"-beyond Canada's western borders,far from the settled areas of the United States.
In those sections of the state which lie above the Arctic Circle,Alaska still is a land of icebergs and polar bears.Ice masses lie buried in the earth.From early May until early August,the midnight sun never :ts on this flat,treeless region,but the sun cannot melt the icy soil more than two-thirds of a meter down.
Alaska is America's largest state,but only about 325,000 people live there.According to estimates, 800，000 hectares of its land area are fit for plowing but only about 640,000 hectares are being cultivated?
Arctic Alaska has been the home of Eskimos for countless centuries.It is believed that the Eskimos moved there from Mongolia or Siberia,probably crossing Bering Strait,named for Vitus Bering,the Danish ea captain who discovered Alaska on his voyage for Russia in 1741.The Eskimos are the state's earliest known inhabitants.Russian fur traders established settlements but,by the time Alaska was sold to the United States,most of the traders had departed.
In 1896 gold was discovered near the Klondike River in Canada just across the Alaskan border.Thousands of Americans rushed to the region on their way to Klondike;some never returned.Alaska was ,ever completely cut off again,although even today transportation is a major problem.There are only two motor routes from the US mainland,and within the state,every town has its own airfield.Planes fly passengers,mail and freight to the most distant villages.
The gold that changed life so suddenly for Alaska was soon ended,and although many stories about fining camps have become part of American literature,the gold from Alaskan earth contributed less to ,economic progress than the fish from Alaskan waters.The fish?caught in a single year range in value from $80 million to $90 million.Fur一bearing animals are plentiful in the forests and streams,and valuable fur seals inhabit the waters.After fishing,the state's chief industry is lumber and the production of wood pulp（纸浆）.In recent years,Alaska's single most important resource has become oil.The state also has large deposits of coal,copper,gold and other minerals.What is mainly responsible for the economic growth in Alaska now?
A:Gold.
B:Oil.
C:Fish.
D:Fur.答案：C解析：本文主要讲述了阿拉斯加半岛的地理位置、地貌特征、可耕种面积、土著居民以及主要经济产业等内容。
由文章第一段第一句话“…when the peninsula was purchased from Russia.”可知，阿拉斯加半岛曾是俄罗斯的一部分。故选D。
由文章第三段中“800,000 hectares of its land area are fit for plowing...”可知，阿拉斯加州的一些土地适合耕种。故选B。
由文章第四段第三句话“The Eskimos are the state' s earliest known inhabitants.”可知，爱斯基摩人是阿拉斯加州的土著居民。故选A。
由文章第五段最后两句话“.and within the state, every town has its own airfield.Planes fly passengers, mail and freight to the most distant villages.”可知，阿拉斯加州的主要交通工具是飞机。故选C。
由文章最后一段可知，虽然成千上万的美国人奔赴阿拉斯加州淘金，但是阿拉斯加州的金子对经济发展的贡献远不如阿拉斯加州水里的鱼。那里一年捕到的鱼能卖8 000万到 9 000万美元。故选C。 -
第4题：
共用题干
Urbanization and Its Influence
Over half the world's people now live in cities.The latest"Global Report on Human Settlements"says a significant change took place last year. The report________(51)this week from U.N.Habitat,a United Nations agency.
A century ago,________(52)than five percent of all people lived in cities.________(53) the middle of this century it could be seventy percent,or ________(54)six and a half billion people.
Already three一fourths of people in________(55)countries live in cities.Now most urban population________(56)is in the developing world.
Urbanization can lead to social and economic progress,but also put________(57)on cities to provide housing and________(58).The new report says almost two hundred thousand people move________(59)cities and towns each day.It says worsening inequalities,________(60)by social divisions and differences in________(61),could result in violence and crime unless cities plan better.
Another issue is urban sprawl（无序扩展的城区）.This is where cities _________ (62) quickly into rural areas,sometimes________(63)a much faster rate than urban population growth.
Sprawl is common in the United States. Americans move a lot.In a recent study,Art Hall at the University of Kansas found that people are moving away from the________(64)cities to smaller ones.He sees a________(65)toward"de-urbanization"across the nation._________(62)
A:expand
B:invade
C:split
D:enlarge答案：A解析：come out：出版、发表；come on：开始、接着来；come over：过来、顺便来访；come off：结果、脱落。这里指发表报告。所以选D。
这句话的意思是：一个世纪前，世界人口应该是非常少。所以选less，即少于5％。
along:沿着；through：通过、穿过。表示时间的节点用by。“by the middleof this century”，意思是“到本世纪中叶”。
barely：几乎不、几乎没有。表示大约的人口数，用“almost”，差不多。
前面应该是和后面的比较，后面用“developing world”，所以此处填“ developed” .flourishing:繁荣的、茂盛的；thriving：旺盛的、蒸蒸日上的；fertile：肥沃的、富饶的、多产的。
从上下文判断，这里指城市人口的增加。extension：扩展；raise：上升、加薪，它不和population搭配使用。addition：添加、增加，不可用来修饰人口，所以选growth。
“put pressure on”是固定搭配，表示“给压力”； restraint：约束、抑制；load: 承载，负荷；weight：重量。
此处指提供住所和服务，即service。 surroundings：环境、生活环境；con-Zerns：关注、关心；communities：社区、团体。
此处意思是“迁入城市”, move into是正确的搭配。around：围绕、环绕。
这句话的意思是：“受社会财富的分配和差异的驱使，社会变得越来越不公平。”所以用driven，和后面的“by”构成被动语态。pressed：重压；drawn：吸引；pulled:拖、拉。
此处指社会财富的不均。社会财富的正确搭配是“social wealth ”。 situation：情景；treasure:财宝、珍宝；category：分类、范畴。
本句话的意思是：“城市的扩张”，用expand，洽当。invade：入侵、侵略； split：分裂；enlarge：扩大、放大。
表示速度用“at the rate”。 beyond：超过、超越。
在逆城市化的进程中，人们从大城市搬往小城市，4个单词中只有“major” 表示“重要的、大的”意思。essential：基本的、本质的；primitive：原始的、粗糙的；prior和to搭配，表示“在……之前”。
此处是一种“de-urbanization”的发展趋势，trend意思正确。direction：指示、方向； style：风格。 -
第5题：
Why has Australia always been a continent with few people?（）
- A、Because Australia is too far away from Europe.
- B、Because Australia is the least mountainous and most level of the world.s continents.
- C、Because Australia is separated from the rest of the world by seas.
- D、Because most of the continent is hot and dry.
正确答案:D -
第6题：
A military member has just returned to the United States from Europe and reports their personaldesktop computer does not work. Which of the following is the MOST logical solution to thisproblem?（）
- A、The computer is unable to work in the US because of EU licensing arrangements
- B、The power supply needs to be replaced with one rated for 110 watts
- C、The power supply needs a power inverter to handle the change in cycles
- D、The power supply voltage needs to be switched to 110 from 220
正确答案:D -
第7题：
A customer is moving from an HP-UX environment to an AIX environment. They will be producing a master image of the environment and will need to install it into hundreds of LPARs and WPARs. Which AIX tool will be of most use in this case？（）
- A、NIM
- B、smit
- C、SUMA
- D、netboot
正确答案:A -
第8题：
问答题Power and Cooperation: An American Foreign Policy for the Age of Global Politics The age of geopolitics in American foreign policy is over; the age of global politics has begun. Throughout the twentieth century, traditional geopolitics drove U. S. thinking on foreign affairs: American security depended on preventing any one country from achieving dominion over the Eurasian landmass. That objective was achieved with the collapse of the Soviet Union. Now the United States finds itself confronting a new international environment, one without a peer competitor but that nonetheless presents serious threats to American security. The terrorists who struck the World Trade Center and the Pentagon neither represented a traditional state-based threat nor were tied to a specific geographical location. Nevertheless, nineteen people with just a few hundred thousand dollars succeeded in harming the most powerful nation on earth. For more than three centuries, the dynamics of world politics was determined by the interplay among states, especially the great powers. Today, world politics is shaped by two unprecedented phenomena that are in some tension with each other. One is the sheer predominance of the United States. Today, as never before, what matters most in international politics is how—and whether—Washington acts on any given issue. The other is globalization, which has unleashed economic, political, and social forces that are beyond the capacity of any one country, including the United States, to control. American primacy and globalization bring the United States great rewards as well as great dangers. Primacy gives Washington an unsurpassed ability to get its way in international affairs, while globalization enriches the American economy and spreads American values. But America’s great power and the penetration of its culture, products, and influence deep into other societies breed intense resentment and grievances. Great power and great wealth do not necessarily produce greater respect or greater security. American leaders and the American people are now grappling with the double-edged sword that is the age of global politics.正确答案： 【参考译文】
权力与合作:全球政治时代美国的外交政策 美国外交政策的地缘政治时代已经结束,全球政治的时代已初露端倪。整个20世纪,传统的地缘政治是美国外交事务的基点:美国的安全在于阻止任何其他国家在亚欧大陆上取得主导地位。这一目标随着苏联的解体而最终得以实现。如今,美国人发现,自己所处的国际新环境中虽然没有可以与之匹敌的国家,但是却存在着对美国安全的严重威胁。袭击世贸中心和五角大楼的恐怖分子,既不是传统的基于国家的威胁,也不能被锁定在某个特定的地理区域。然而,19个人用了区区几十万美元,便成功地对这个世界上最强大的国家造成了伤害。
三个多世纪以来,世界政治动态始终取决于国家间、尤其是大国间的互动关系。今天,主导世界政治格局的则是两大前所未有、且彼此间保持着某种张力的现象。其一是美国不容置疑的主导作用。国际政治从来没有像今天这样,取决于华盛顿对任何问题的反应。其二是全球化。全球化在经济、政治及社会领域所释放出的力量,没有任何一个国家——包括美国——能将之置于自己的控制之下。
美国的老大地位和全球化给美国带来了巨大的利益,也带来了重大的危险。老大地位给了华盛顿无可超越的能力,在国际事务中为所欲为;而全球化使美国经济更加强大,并使美国的价值观得以传播。然而美国的强大、文化产品的渗透,及对其他国家的深入影响却招致了政体强烈的憎恨和不平。大国地位和巨大的财富并不一定能带来更多的尊敬或更多的安全感。美国的领导者和美国人民正在为如何使用全球政治时代这把双刃剑而费神。解析： 暂无解析 -
第9题：
单选题The Danes believe that they are ______.Aorderly people just like the Germans and the Swedes
Bdifferent from either the Germans or the Swedes
Cmore like the British people
Dnot orderly people as other people think
正确答案： A解析：
细节题。第四段第一句指出“丹麦是个秩序井然的国度”，但接下来第二句则提到丹麦人却不认为他们是a waiting-at-2-a.m.-for-the-green-light people（凌晨两点就开始等候绿灯通过的人），即“指秩序井然的人”。由此可知选项D表述正确。 -
第10题：
单选题Most tree frogs change colors from time to time to fit in with its environment.AMost
Bchange
Cfrom time to time
Dits
正确答案： D解析： -
第11题：
问答题Practice 6 If there's a threat of dangerous deflation—a general fall in prices—the causes lie as much in Europe and Japan as in the United States. The inevitable collapse of America's speculative boom need not have been especially damaging if the world's other advanced economies were healthy. Their expanding appetite for imports would have bolstered the United States and so-called emerging market countries, from Brazil to South Korea. The trouble is that other advanced economies aren't healthy. Deflation could emerge from simultaneous slumps in the world's three major economies. Prices drop because there's too little global demand chasing too much global supply—everything from steel to shoes. Japan's ills are well known. Its banks are awash in bad loans. Less understood (at least in the United States) is the fact that Europe's troubles stem significantly from Germany. Germany is Europe's “sick man”, just as Japan is Asia's. Only 15 years ago, these countries seemed poised to assume leadership of the world economy. Now they are dragging it down.正确答案： 【参考译文】
如果说存在危险的通货紧缩——即价格普遍下降——的威胁,其原因在于美国,同样也在于欧洲和日本。倘若世界其他先进国家的经济是健康的,美国的投机性暴涨不可避免的崩盘不一定具有特别的破坏性。这些国家越来越大的进口欲望本可以促进美国以及从巴西到韩国的所谓新兴市场国家的经济,问题是其他先进国家的经济并不是健康的。
世界上三个经济大国同步衰退,就有可能出现通货紧缩。价格下跌是因为全球的供应——从钢铁到鞋子的一切货物——大量过剩,而全球的需求量却很小。日本经济上的弊病是众所周知的。日本银行的不良贷款泛滥成灾。人们不大了解的是(至少在美国),欧洲的弊端主要源自德国。德国是欧洲的“病人”,犹如日本是亚洲的病人。仅仅15年前,这两个国家似乎已准备好统领世界经济,然而现在它们却在拖世界经济的后腿。解析： 暂无解析 -
第12题：
问答题Practice 8 The United States has long been known as a “melting pot”, because many of its people are descended from settlers who came from all over the world to make their homes in the new land. The first immigrants in American history came from England and the Netherlands. Attracted by reports of great economic opportunities and religious and political freedom, immigrants from many other countries flocked to the United States in increasing numbers, reaching a peak in the years 1880—1914. Between 1820 and 1980 the United States admitted almost 50 million immigrants. Some 1,360,000 American Indians, descendants of North America's first inhabitants, now reside in the United States. Most live in the West, but many are in the south and north central areas. Of the more than 300 separate tribes, the largest is the Navaho in the Southwest. Black people were first brought to America from Africa as slaves. Their descendants now make up nearly 12 percent of the population. They once lived mainly in the agricultural South but now are scattered throughout the nation.正确答案： 【参考译文】
美国历来以“民族熔锅”著称,因为许多美国人是移民的后裔,当年这些移民从世界各地来到这块新土地上安家落户。美国历史上首批移民来自英国和荷兰。许多其他国家的人听说在美国经济上有很大的发展机会,还有宗教自由和政治自由,于是便纷纷移居美国,移民人数越来越多,1880年至1914年达到了顶峰。在1820年到1980年间,美国接纳了近5000万移民。
现在约有1360000名印第安人居住在美国,他们是北美土著的后裔。大多数印第安人住在西部,也有许多住在中部的南北地区。美国印第安人分属300多个不同的部落,其中最大的是西南部的纳瓦霍部落。
黑人当初是被当作奴隶从非洲贩运到美国的,他们的后裔现在几乎占美国人口的百分之十二。从前,黑人主要聚居在南方农业地带,但如今则分散到美国各地。解析： 暂无解析 -
第13题：
An administrator created a .env file in a user‘s home directory to configure a number of custom environment variables for a local application. However, after the user logs out and then logs back into the system, the custom variables are not being set.What is the most likely reason that the custom .env file is being ignored?（）
A.A shell other than ksh is being used by the user.
B.The line ‘export ENV=$HOME/.env‘ is missing from /etc/profile.
C.The line ‘export ENV=$HOME/.env‘ is missing from the user‘s .profile.
D.The env_profile attribute is not defined for the user within /etc/security/user.
参考答案：C
-
第14题：
共用题干
第三篇
Alaska
In 1959 Americans welcomed Alaska into the Union as the 49th state,symbolizing a change of attitude from that held in 1867, when the peninsula（半岛）was purchased from Russia.Then, most Americans had little interest in 1,500,000 square kilometers"of icebergs and polar bears"-beyond Canada's western borders,far from the settled areas of the United States.
In those sections of the state which lie above the Arctic Circle,Alaska still is a land of icebergs and polar bears.Ice masses lie buried in the earth.From early May until early August,the midnight sun never :ts on this flat,treeless region,but the sun cannot melt the icy soil more than two-thirds of a meter down.
Alaska is America's largest state,but only about 325,000 people live there.According to estimates, 800，000 hectares of its land area are fit for plowing but only about 640,000 hectares are being cultivated?
Arctic Alaska has been the home of Eskimos for countless centuries.It is believed that the Eskimos moved there from Mongolia or Siberia,probably crossing Bering Strait,named for Vitus Bering,the Danish ea captain who discovered Alaska on his voyage for Russia in 1741.The Eskimos are the state's earliest known inhabitants.Russian fur traders established settlements but,by the time Alaska was sold to the United States,most of the traders had departed.
In 1896 gold was discovered near the Klondike River in Canada just across the Alaskan border.Thousands of Americans rushed to the region on their way to Klondike;some never returned.Alaska was ,ever completely cut off again,although even today transportation is a major problem.There are only two motor routes from the US mainland,and within the state,every town has its own airfield.Planes fly passengers,mail and freight to the most distant villages.
The gold that changed life so suddenly for Alaska was soon ended,and although many stories about fining camps have become part of American literature,the gold from Alaskan earth contributed less to ,economic progress than the fish from Alaskan waters.The fish?caught in a single year range in value from $80 million to $90 million.Fur一bearing animals are plentiful in the forests and streams,and valuable fur seals inhabit the waters.After fishing,the state's chief industry is lumber and the production of wood pulp（纸浆）.In recent years,Alaska's single most important resource has become oil.The state also has large deposits of coal,copper,gold and other minerals.Alaska is an American state that________.
A:locates within the Arctic Circle
B:was known by Americans before 1867
C:lies to the east of Canada
D:was once owned by Russia答案：D解析：本文主要讲述了阿拉斯加半岛的地理位置、地貌特征、可耕种面积、土著居民以及主要经济产业等内容。
由文章第一段第一句话“…when the peninsula was purchased from Russia.”可知，阿拉斯加半岛曾是俄罗斯的一部分。故选D。
由文章第三段中“800,000 hectares of its land area are fit for plowing...”可知，阿拉斯加州的一些土地适合耕种。故选B。
由文章第四段第三句话“The Eskimos are the state' s earliest known inhabitants.”可知，爱斯基摩人是阿拉斯加州的土著居民。故选A。
由文章第五段最后两句话“.and within the state, every town has its own airfield.Planes fly passengers, mail and freight to the most distant villages.”可知，阿拉斯加州的主要交通工具是飞机。故选C。
由文章最后一段可知，虽然成千上万的美国人奔赴阿拉斯加州淘金，但是阿拉斯加州的金子对经济发展的贡献远不如阿拉斯加州水里的鱼。那里一年捕到的鱼能卖8 000万到 9 000万美元。故选C。 -
第15题：
共用题干
第三篇
Alaska
In 1959 Americans welcomed Alaska into the Union as the 49th state,symbolizing a change of attitude from that held in 1867, when the peninsula（半岛）was purchased from Russia.Then, most Americans had little interest in 1,500,000 square kilometers"of icebergs and polar bears"-beyond Canada's western borders,far from the settled areas of the United States.
In those sections of the state which lie above the Arctic Circle,Alaska still is a land of icebergs and polar bears.Ice masses lie buried in the earth.From early May until early August,the midnight sun never :ts on this flat,treeless region,but the sun cannot melt the icy soil more than two-thirds of a meter down.
Alaska is America's largest state,but only about 325,000 people live there.According to estimates, 800，000 hectares of its land area are fit for plowing but only about 640,000 hectares are being cultivated?
Arctic Alaska has been the home of Eskimos for countless centuries.It is believed that the Eskimos moved there from Mongolia or Siberia,probably crossing Bering Strait,named for Vitus Bering,the Danish ea captain who discovered Alaska on his voyage for Russia in 1741.The Eskimos are the state's earliest known inhabitants.Russian fur traders established settlements but,by the time Alaska was sold to the United States,most of the traders had departed.
In 1896 gold was discovered near the Klondike River in Canada just across the Alaskan border.Thousands of Americans rushed to the region on their way to Klondike;some never returned.Alaska was ,ever completely cut off again,although even today transportation is a major problem.There are only two motor routes from the US mainland,and within the state,every town has its own airfield.Planes fly passengers,mail and freight to the most distant villages.
The gold that changed life so suddenly for Alaska was soon ended,and although many stories about fining camps have become part of American literature,the gold from Alaskan earth contributed less to ,economic progress than the fish from Alaskan waters.The fish?caught in a single year range in value from $80 million to $90 million.Fur一bearing animals are plentiful in the forests and streams,and valuable fur seals inhabit the waters.After fishing,the state's chief industry is lumber and the production of wood pulp（纸浆）.In recent years,Alaska's single most important resource has become oil.The state also has large deposits of coal,copper,gold and other minerals.What is true about the Eskimos?
A:They are the natives of Alaska.
B:They moved to Alaska from Denmark.
C:They had a long fight with the Russian traders?
D:They discovered gold near the Klondike River.答案：A解析：本文主要讲述了阿拉斯加半岛的地理位置、地貌特征、可耕种面积、土著居民以及主要经济产业等内容。
由文章第一段第一句话“…when the peninsula was purchased from Russia.”可知，阿拉斯加半岛曾是俄罗斯的一部分。故选D。
由文章第三段中“800,000 hectares of its land area are fit for plowing...”可知，阿拉斯加州的一些土地适合耕种。故选B。
由文章第四段第三句话“The Eskimos are the state' s earliest known inhabitants.”可知，爱斯基摩人是阿拉斯加州的土著居民。故选A。
由文章第五段最后两句话“.and within the state, every town has its own airfield.Planes fly passengers, mail and freight to the most distant villages.”可知，阿拉斯加州的主要交通工具是飞机。故选C。
由文章最后一段可知，虽然成千上万的美国人奔赴阿拉斯加州淘金，但是阿拉斯加州的金子对经济发展的贡献远不如阿拉斯加州水里的鱼。那里一年捕到的鱼能卖8 000万到 9 000万美元。故选C。 -
第16题：
Why has Australia always been a continent with few people?（）
ABecause Australia is too far away from Europe.
BBecause Australia is the least mountainous and most level of the world.s continents.
CBecause Australia is separated from the rest of the world by seas.
DBecause most of the continent is hot and dry.
D
略 -
第17题：
What is the most common cause of network congestion？（）
- A、aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches
- B、speed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment
- C、flapping Ethernet interfaces caused by misconfigured LAN interfaces
- D、flapping serial interfaces caused by misconfigured WAN interfaces
- E、speed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment
正确答案:E -
第18题：
An administrator created a .env file in a user’s home directory to configure a number of custom environment variables for a local application. However， after the user logs out and then logs back into the system， the custom variables are not being set What is the most likely reason that the custom .env file is being ignored？（）
- A、A shell other than ksh is being used by the user.
- B、The line ’export ENV=$HOME/.env’ is missing from /etc/profile.
- C、The line ’export ENV=$HOME/.env’ is missing from the user’s .profile.
- D、The env_profile attribute is not defined for the user within /etc/security/user.
正确答案:C -
第19题：
单选题You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEES table. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）Aperform pointintime recovery
Bperform a Flashback Table operation to restore the table to the state it was in two days ago
Cperform a Flashback Database operation to restore the database to the state it was in two days ago
Dperform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery
正确答案： A解析： 暂无解析 -
第20题：
问答题◆Topic 6: Is International Tourism an Effective Bridge of Different Nations? Questions for Reference: 1. Why do you think people like to take an international tourism? 2. What kind of situation are the travelers most likely to be faced with when they get on an international tourism? 3. The international tourism does not promote understanding between people from different cultures. Do you agree?正确答案： 【参考答案】
Every year, hundreds of millions of people move around to see a different part of the world. It is natural to assume that tourists who have seen other countries have a better knowledge of the people. That assumption also leads to the conclusion that international tourism promotes understanding between nations. How true is this? Let us examine what tourists do in a different country.
First, before going abroad, tourists are often told by their travel agents of the possible hazards which sometimes include local people. They are given example of extreme cases where victims are always the travelers. Then, when they arrive, they are immediately taken to their hotels in big coaches. They flood places where local people don’t go. Their shopping, meals, entertainment all take place in secluded areas. They wear a bubble all the way. Apart from speaking to the guide and a few shop assistants, tourists rarely talk to the local people. To make it even worse, they meet pickpockets; they are ripped off by dishonest traders.
Furthermore, very few local people bother to talk to them out of a genuine interest in the guests’ country, people and culture. Therefore, when asked how much they know about the local people, their answer is “very little”.
If someone really wants to understand a different culture, he has to learn its language, stay there for at least a few month without wearing a bubble, learn how to curse and swear, bargain with a vegetable vendor and then he can say that he understands the people.解析： 暂无解析 -
第21题：
单选题An administrator created a .env file in a user’s home directory to configure a number of custom environment variables for a local application. However， after the user logs out and then logs back into the system， the custom variables are not being set What is the most likely reason that the custom .env file is being ignored？（）AA shell other than ksh is being used by the user.
BThe line ’export ENV=$HOME/.env’ is missing from /etc/profile.
CThe line ’export ENV=$HOME/.env’ is missing from the user’s .profile.
DThe env_profile attribute is not defined for the user within /etc/security/user.
正确答案： B解析： 暂无解析 -
第22题：
单选题What is the most common cause of network congestion？（）Aaggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches
Bspeed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment
Cflapping Ethernet interfaces caused by misconfigured LAN interfaces
Dflapping serial interfaces caused by misconfigured WAN interfaces
Espeed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment
正确答案： C解析： 暂无解析 -
第23题：
单选题The United Nations Conference on Global Environment, which took place earlier this year in Vienna, was a very（） meeting.Aproductive
Bcommunicative
Caggressive
Dprotective
正确答案： D解析： 暂无解析