专项攻克
第一篇
Common Questions about Dreams
Does everyone dream？
Yes.Research shows that we all dream.We have our most vivid dreams during a type of sleep called Rapid Eye Movement（REM）sleep.During REM sleep，the brain is very active.The eyes move quickly back and forth under the lids，and the large muscles of the body are relaxed.REM sleep occurs every 90-100 minutes，three to four times a night，and it lasts longer as the night goes on. 46 We dream at other times during the night，too，but those dreams are less vivid.
Do people remember their dreams？
A few people remember their dreams.However，most people forget nearly everything that happened during the night—dreams，thoughts，and the short periods of time when they were awake. 47 It seems that the memory of the dream is not totally lost，but for some reason it is very hard to bring it back.If you want to remember your dream，the best thing to do is to write it down as soon as you wake up.
Are dreams in color？
Most dreams are in color.However，people may not be aware of it for two reasons：They don’t usually remember the details of their dreams，or they don’t notice the color because it is such a natural part of our lives. 48
Do dreams have meaning？
Scientists continue to debate this issue. 49 Some people use dreams to help them learn more about their feelings，thoughts，behavior，motives，and values.Others find that dreams can help them solve problems.It’s also true that artists，writers，and scientists often get creative ideas from dreams.
How can I learn to understand my dreams？
The most important thing to remember is that your dreams are personal.The people，actions，and situations in your dreams reflect your experience，your thoughts，and your feelings.Some dream experts believe that there are certain types of dreams that many people have，even if they come from different cultures or time periods.Usually，however，the same dream will have different meanings for different people.For example，an elephant in a dream may mean one thing to a zookeeper and something very different to a child whose favorite toy is a stuffed elephant. 50 Then look for links between your dreams and what is happening in your daily life.If you think hard and you are patient，perhaps the meaning of your dreams will become clearer to you.
A.However，people who spend time thinking about their dreams believe that they are meaningful and useful.
B.The final REM period may last as long as 45 minutes.
C.People who are very aware of color when they are awake probably notice color more often in their dreams.
D.Our most powerful dreams don’t happen during deep sleep.
E.To learn to understand your dreams，think about what each part of the dream means to
you or reminds you of.
F.Sometimes，though，people suddenly remember a dream later in the day or on another day.
第二篇
The Caribbean Islands
What would you see if you took a cruise to the Caribbean Islands？Palm trees and coconuts （椰子）？White beaches and clear，blue ocean？Colorful corals（珊瑚）and even more colorful fishes and birds？
You bet.There are thousands of islands in the Caribbean Sea.They are famous for their warm， tropical climate and great natural beauty.
The Caribbean Islands form a chain that separates the Caribbean Sea from the rest of the Atlantic Ocean 46 Many of the islands were formed by the eruption（爆发）of ancient volcanoes（火山）.Others are low-lying coral islands that gradually rose from the ocean.
The Caribbean Islands are known by several names. 47 The explorer Christopher Columbus called the islands the Indies in 1492 because he thought he was near the coast of India. Later，Spain and France called the islands the Antilles.
There are four large islands in the Caribbean Sea. 48 These four islands are often called the Greater Antilles.Together，they account for about 90 percent of the land area of the Caribbean Islands.
The rest of the Caribbean Islands are much smaller. 49 You can see why pirates such as the famous Blackbeard sailed these waters.There are countless small islands to bury treasure or hide on.
The weather of the Caribbean Sea is almost always warm and sunny.Sandy beaches line the coasts of many islands. 50 Many tourists arrive on cruise ships.
A.But life on the Caribbean Islands is not always paradise.
B.The earliest name used by Europeans is the Indies，later changed to the West Indies.
C.They’re like a long necklace that stretches between North and South America.
D.They are Cuba，Puerto Rico，Jamaica，and Hispaniola.
E.This is why millions of tourists visit the islands each year.
F.Some of these islands are no more than tiny slivers（小片）of exposed coral.
第三篇
Heat Is Killer
Extremely hot weather is common in many parts of the world.Although hot weather just makes most people feel hot，it can cause serious medical problems—even death.Floods，storms，volcano eruptions and other natural disasters kill thousands of people every year. 46 Experts say heat may be nature’s deadliest killer.Recently，extreme heat was blamed for killing more than one hundred people in India.It is reported that the total heat of a hot day or several days can affect health. 47 Experts say heat waves often become dangerous when the nighttime temperature does not drop much from the highest daytime temperature.This causes great stress on the human body.
48 stay out of the sun，if possible.Drink lots of cool water.Wear light colored clothing made of natural materials；avoid wearing synthetic clothing.Make sure the clothing is loose， permitting freedom of movement.And learn the danger signs of the medical problems，such as headache and vomiting that are linked to heat. 49 The pain is a warning that the body is becoming too hot.Doctors say those suffering headache or muscle pain should stop all activity and rest in a cool place and drink cool liquids.Do not return to physical activity for a few hours because more serious conditions could develop.
Doctors say some people face an increased danger from heat stress. 50 Hot weather also increases dangers for people who must take medicine for high blood pressure，poor blood flow， nervousness or depression.
A.Such persons have a weak or damaged heart，high blood pressure，or other problems of the blood system.
B.Several of these conditions are present at the same time.
C.Most people suffer only muscle pain as a result of heat stress.
D.Several hot days are considered a heat wave.
E.So does extreme heat.
F.Doctors say people can do many things to protect themselves from the dangers of extreme heat.
答案与解析
第一篇
46.B。文章第一段主要介绍快速眼动睡眠期，而且前一句正好提到每晚快速眼动睡眠期的间隔时间、出现频率及其持续时间的情况。
47.F。题目所在的前一句提到大多数人会忘记晚上所发生的几乎所有事情，而后一句中又提到人们对梦的记忆好像没有完全丢失，由此可以推断出中间这一句应该说的是人有时会记起自己的梦。
48.C。文章第三段提到梦是彩色的，前面主要讲的是人们可能意识不到这个问题以及意识不到的原因，由此可以推断后面应该会提到那些可以意识到这个问题的人。因此，答案为C。
49.A。文章第四段讲的是梦的意义，纵观六个选项，与该段主题相关的只有选项A，而且后面主要提到人们会利用梦做些什么，这也就意味着人们会思考他们的梦而且相信梦是有意义的。
50.E。由第五段的标题就可以锁定选项E，而且后一句讲的是要寻找梦与现实的联系，正好与选项E的意思相吻合。
第二篇
46.C。第三段的第一句话说的是：加勒比群岛形成了一条锁链，把加勒比海与大西洋的其他部分分开。有可能构成答案的是C和D。因为它们的第一个词都是They，该词指的是The Caribbean Islands。但是，D项The Caribbean Islands只有古巴等4个国家组成不符合实际情况，因此C是正确的。
47.B。第四段的第一句话（主题句）说的是：加勒比群岛有好几个名字。这是一个总的概括，紧接着应该是具体的说明。B是具体的说明：欧洲人最早用的名字是印度群岛（the Indies），后来叫作西印度群岛（the West Indies）。
48.D。第五段的第一句话说的是：加勒比海有4座大的岛屿。这是一个总的说明。下面应当列举。D是列举。
49.F。第六段的第一句话说的是：加勒比群岛中的其他岛屿小得多。接着应该是进一步说明。F是进一步说明。
50.E。最后一段讲到加勒比海的天气温暖，阳光充裕，许多岛屿的海岸有沙滩，这样的自然环境显然会吸引旅游者。故选E。
第三篇
46.E。本文的标题是Heat Is Killer，通篇文章说的是heat的危害性及预防方法。空白处前面的句子说“Floods，storms，volcano eruptions and other natural events kill thousands of people every year”，空白处后面的句子说“...heat may be nature’s deadliest killer”。将两个句子所表达的意思汇总来看，floods，storms，volcano eruptions和高温都是杀手，而以高温更甚。空白处的句子一定与“杀手”有关。六个选项中只有E符合这个条件，所以E是答案。
47.D。空白处后面的句子说到heat waves，而选项D的句子中也出现heat wave，说明这两个句子意思上有联系。空白处中的句子应该是对“heat wave”下的定义，以便为下一句的展开作铺垫。故D是答案。
48.F。第一段末尾说：热浪期间，当黑夜与白天温差不大时，对人体伤害很大。第二段就列举了许多保护自己免受高温伤害的方法。空白处的句子应该是位于段首的概括句。选项F说人们有多种办法保护自己，完全符合要求，因此F是答案。
49.C。紧跟该空白处后面的句子中有特指的the pain，说明前文一定出现过pain这个词。选项C的句子中有pain，且C的句子填入后，上下文意思连贯，所以C是答案。
50.A。空白处前面的句子说：某些人在热浪期间特别危险。空白处后面说了一类人群，说明本段第一句为段落主旨句，后面为分句。选项A介绍了另一些受影响的人，所以A是答案。