考题
单选题According to the passage, we come to know that large parts of the South have ______ alcohol sales in the last 73 years.A
been most strict withB
been strictly limitless onC
been prohibitive toD
remained very strict正确答案：C解析：细节题。large parts of the South出现在第一段第一句，该句前后形成对比。该剧后半部分指出“…large parts of the South have remained strictly off-limits to alcohol sales”。off-limits意为“禁止进入的”，结合该句前半部分提到的“73年前美国许多地方就中止了《禁酒令》”，可知此处指南方大部分地区却仍然严格禁止酒类销售。因此选C。
考题
共用题干
第二篇Natural MedicinesSince earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospi- tals.Yet injuries are treated.And diseases are often cured.How?By ancient methods.By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical, however.Through the centuries, tribal（部族的）medicine men experimented with plants. They found many use- ful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store.Yet many wide- ly-used medicines are from ancient sources,especially plants.Some experts say more than 25% of modern medicines come,in one way or another,from nature.Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive.So scientists' interest in traditional medicine is not new.But it has become an ur-gent concern.This is because the earth's supply of natural medicines may be dropping rapidly. The passage indicates that ancient treatments for injury and disease were_________.A:much more successful than modern onesB:successful enough for humans to surviveC:successful in all casesD:of little help to humans答案：B解析：由文章第一段第二句话可知，古代的医疗手段已经足以让人类免于完全灭亡，即生存 下去。故选B。由文章第三段可知，现在世界上的很多地方仍然没有高学历的医生，也没有治疗费昂贵的医院，但这些地方的人们仍有办法治疗疾病。他们仍然使用古老的医疗办法来治病。故 选A。由文章第四段最后一句话可知，科学家们相信这些古老的医疗手段可能会给现今最严 重的疾病提供治愈方法。故选B。由文章第五段第一句话可知，专家们说世界上80％的人们在用植物草药做医疗保健。 故选D。或者根据文章主题（文章标题Natural Medicine）直接选择答案。由文章最后一段最后一句话，可知地球上的天然药物的供给量可能会急速下降。故 选B。第三篇 本篇文章主要讲述了人类为了改善生活使用技术工具改变了地球的自然面貌，在给自己带 来便利的同时却污染了环境，影响了生态平衡。
考题
单选题What is the best title for this passage?A
Human Brain’s Amazing FactsB
Human Hearing CharacteristicsC
How To Improve HearingD
How Do Humans Hear正确答案：C解析：主旨大意题。通读文章可知，本文主要讲述了人们是如何听到并且辨别声音的。
考题
共用题干
Natural MedicinesSince earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.Through the centuries , tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.Some experts say more than 25%of modem medicines come,in one way or another,from nature.Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly. It can be seen from the passage that the earth's supply of natural medicines______.A: may never be exhaustedB: may be dropping rapidlyC: is surprisingly bigD: is as rich as ever答案：B解析：第一段中“...successful enough to keep humans from dying out completely"（有效地使人类免于完全消亡）与选项B" successful enough for humans to survive"（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝时肯定和绝对否定都是错误的。第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。第五段第一句直接提供了本题的答案。短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。
考题
Over eight months the scientists tested 20 drugs, all with negative results. Finally they tested the anticonvulsant drug ethosuzimide. Researchers found that the drug extended the life span of roundworms from 16. 7 days to 19. 6 days, a 17 percent increase。A. But Komfeld said scientists will not know about the applicability of the drugs in humans until a similar study is done on humans. “What’s very encouraging is that these drugs were developed to treat humans, and they are well understood, because they’ve been used for a long time, ” he said。B. Later the scientists discovered that two related anticonvulsant drugs also lengthened the lives of the worms-in the case of one drug, by almost 50 percent. “This was a big surprise to use, Komfeld said. ”“We didn’t think anticonvulsant drugs had any particular relationship to aging. That connection was completely unexpected. ”C. Roundworms are a poor subject for experiments, because they are not like humans, even though their molecules are similar. For example, they have no bones, nor do they show emotions, making it difficult to know how exactly human subjects would react to these drugs in large quantities. However, using the worms allows experiments to be conducted quickly, because they do not live for long。D. “Somehow the neural activity seems to regulate the aging of all of the body the skin, musculature, and reproductive tract, ” Kornfeld said. “Somehow the nervous system coordinates the progress of all these tissues, evidently, though the life stages. But we don’t know how it does that. ”E. The discovery may also shed light on the little-understood aging process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a laboratory. The worm is well known in genetics, and the worm’s genome has been sequenced。G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld optimistically. ”正确答案：F空前文字概括介绍了Evason的实验，只有选项F非常清楚地描述了实验对象，并说明为什么使用这个实验对象的原因。这实际上都是介绍实验的一部分。
考题
共用题干
Natural MedicinesSince earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.Through the centuries , tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.Some experts say more than 25%of modem medicines come,in one way or another,from nature.Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly. The passage indicates that ancient treatments for injury and disease wereA: much more successful than modem onesB: successful enough for humans to surviveC: successful in all casesD: of little help to humans答案：B解析：第一段中“...successful enough to keep humans from dying out completely"（有效地使人类免于完全消亡）与选项B" successful enough for humans to survive"（有效地使人类生存下来）意思一样。短文中并没有对选项A的内容做比较，实际上也不可能笼统地做这种比较。选项C和D凭常识也能做出判断，绝时肯定和绝对否定都是错误的。第三段第一句和第二句对选项A中的“all over the world”作了否定，而其他三个选项的内容在短文中都直接或间接谈到：选项B的内容在第二段最后一句和第三段第一句、第二句都间接提到，我们自然会想到，大医院有现代化的医疗设备，有经过高等教育的医生，有现代化的药品，看病的价格当然昂贵；第三段最后一句的内容与选项C的文字完全相同；第一段第一句的内容与选项D的内容也相同。第四段最后一句提供了本问题的答案，两处除了句子结构不同以外，文字完全相同。其他三个选项的内容短文都没有提及，根据常识判断也可以知道它们不是正确答案。第五段第一句直接提供了本题的答案。短文最后一句直接提供了本问题的答案，其他三个选项均与此完全相反。
考题
单选题From the passage, we know that people prefer sitting by someone who ______.A
is like themselvesB
has a sense of humorC
is open-mindedD
lives an exciting life正确答案：C解析：【文章大意】本文首先介绍一项研究结果，揭示在现实生活中会出现“人以内聚”的现象，进而发出疑问并号召大家远离“安全区”，接受变化和异议。由第二段中的”Perhaps unsurprisingly，we prefer to sit close to people like ourselves”可知人们喜欢坐在与自己相似的人的旁边，因此选A项。
考题
单选题From the passage we know that the Globe is a famous ______.A
newspaperB
magazineC
templeD
church正确答案：D解析：文中第五段“To another paper?”和倒数第三段“walking through the newsroom for more good byes. ”均可以推断这是一家报社。故选A。
考题
共用题干
第三篇Eat More, Weigh Less, Live LongerClever genetic detective work may have found out the reason why a near-starvation diet prolonas the life of many animals.Ronald Kahn at Harvard Medical School in Boston,U.S.,and his colleagues navebeen able to extend the lifespan（寿命）of mice by 18 per cent by blocking the rodent's(啮齿动物）increase of fat in specific cells.This suggests that thinness一and not necessarily diet一Iromotes lonq life in"calorie（热量卡）restricted" animals."It's very cool work",says aging researche:Cynthia Kenyon of the University ot California, San Francisc."These mice eat all they want, lose weight and live longer.It's like heaven."Calorie restriction dramatically extends the lifespan of organisms as different as worms and rodents.Whether this works in humans is still unknown,partly because few people are willina to submit to such a strict diet.But many researchers hope they will be able to trigger the same effect with a drug once they understand how less food leads to a longer life.One theory is that eating less reduces the increase of harmful things that can damage cells.But Kahn's team wondered whether the animals simply benefit by becoming thin.To find out, they used biology tricks to disrupt the insulin（胰岛素）receptor (受体)gene in lab mice一but only in their fat cells."Since insulin is needed to help fat cells storefat ,these animals were protected against becoming fat,"explains Kahn.This slight genetic change in a single tissue had dramatic effects.By three months of age.Kahn's modified mice had up to 70 per cent less body fat than normal control mice,despite the fact that they ate 55 per cent more food per gram of body weight.In addition ,their lifespan increased.The average control mouse lived 753 days,while the thin rodents averaged a lifespan of 887 days.After three years,all the control mice had died.but one-quarter of the modified rodents were still alive."That they ciet these effects by just manipulating the fat cells is controversial,"saysLeonard Guarente of the Massachusetts Institute of Technology,who studies calorie restriction and aging.But Guarente says Kahn has yet to prove that the same effect is responsible forincreased lifespan in calorie-restricted animals."It might be the same effect or there might be two routes to long life,"he points out,"and that would be very interesting." According to the passage,we do not know whether humans will benefit from taking in fewer calories partly becauseA:humans,worms and rodents are different.B:most people are not willing to be put on a strict diet.C:the effect is not known.D:genetic changes in tissues can not be performed on humans.答案：B解析：
考题
单选题What would the author write the passage mainly for?A
To tell surfers to stay away from sharks.B
To ask people to stop killing sharks.C
To let us know the reasons for shark attacks on people.D
To show that humans are much stronger than sharks.正确答案：B解析：主旨大意题。文章主要分析了鲨鱼攻击人类的原因，这就是作者写作本文的目的。
