题目内容

1．Big cats have existed on the earth for millions of years，though scientists aren't sure exactly how long．But a new study indicates that a skull（颅骨） of a snow leopard（豹） relative that was recently unearthed is 4.4million years old．That makes it the oldest big cat fossil（化石） ever found．
A team of US and Chinese scientists unearthed the skull in Tibet．This creature is not a direct ancestor to big cats，but it is closely related to the snow leopard，study leader Jack Tseng told the Associated Press．The fossil lends evidence to the belief that big cats existed in Asia and spread out from there．
Big cats are at the top of the food chain and have few predators of their own．Big cats include snow leopards，clouded leopards，tigers and lions．Based on genetic judgements，most scientists believe they first existed in Central Asia．But previously，the oldest known big cat fossil was 3.6million years old and found in Africa．
The new fossil findings were published in the November 13 issue of the science journal Proceedings of the Royal Society B：Biological Sciences．Tseng and his team were fossil hunting in the Himalayas in 2010when they discovered some bones，including the buried cat skull．The researchers were able to determine its age by studying the surrounding rocks and soil．The skull indicates that the animal was about the size of a clouded leopard，which can grow up to 50pounds．In 2012，the team returned to unearth more cat bones．
David Polly from Indiana University told the Associated Press that the fossil is"convincingly older than the current record holder"．He added that there could be even older big cat fossils in the Tibetan plateau to uncover．

24．What does the newly unearthed skull proveA？
A．Big cats might have their origins in Asia．
B．The oldest fossil is 4.4million years old．
C．The snow leopard is the oldest big cat．
D．The skull is of big cats'direct ancestor．
25．What does the underlined word in Paragraph 3 meanB？
A．relatives．
B．enemies．
C．partners．
D．protectors
26．How do the researchers know the skull's ageD？
A．By measuring its size and forehead．
B．By examining other bones around it．
C．By studying its chemical composition．
D．By exploring the rocks and soil around it．
27．Where was"the current record holder"in the last paragraph foundB？
A．Asia．
B．Africa．
C．America．
D．Australia．

分析 一项新的研究表明，最近出土的一个大概来源于400多万年前的像豹子的头骨，使人们发现了古老的大型猫科动物化石．本文讲述的是科学家们对此化石的研究与对大型猫科动物历史的一些猜测．

解答 24．A．细节理解题．根据文章第二段"The fossil lends evidence to the belief that big cats existed in Asia and spread out from there"，可知，新的研究证明大型猫科动物最早存在于亚洲．故选A．
25．B．词义猜测题．根据原句"Big cats are at the top of the food chain and have few predators of their own"，可知，大型猫科动物处于食物链的顶端，很少有自己的 predators．可推测，食物顶端的天敌比较少．因此"predators"是天敌，捕食者之意．结合选项，"enemies"是敌人之意．故选B．
26．D．细节理解题．根据文章第四段"The researchers were able to determine its age by studying the surrounding rocks and soil"，可知，研究人员根据它周围的岩石及土壤来判断头骨的年龄．故选D．
27．B．细节理解题．"the current record holder"意为"目前的记录保持者"．根据文章第三段"But previously，the oldest known big cat fossil was 3.6 million years old and found in Africa"，可知，原来记录中发现的最古老的化石来自非洲．故选B．

点评 本文为人文地理类阅读．此类文章解释说明文居多．说明文的解题关键在于抓住文章第一段内容，通常该部分就是文章的中心思想．说明文是对事物的形状、性质、特征、成果或功用等进行介绍，解释或阐述的文章．把握所说明事物的特征和本质是理解说明文的关键．说明事物特征的方法很多，主要有定义法、解释法、比较法、比喻法、数字法、图表法、引用法和举例法等．

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32．In Britain people with dementiaA
A．are likely to increase in number    
B．are mostly over 65 years old
C．will be trained to respond to sound triggers    
D．will be able to live a relatively normal life
33．The dogs are taught to perform tasks byD．
A．making some sound signals  
B．communicating with the patients
C．reminding the patients by barking   
D．reacting to some sound triggers
34．What does the underlined word"them"in Paragraph 4 refer to？C   
A．Faces．          B．Triggers．      C．Pets．           D．Companions．
35．What is mainly talked about in the passage？B
A．The idea of dementia dogs was developed by students．
B．Dogs are trained to assist Alzheimer's patients．
C．British people with Alzheimer's are in poor condition．
D．The dementia dogs perform most duties of a doctor．
10．Many people focus on physical fitness，but few know that brain fitness is also something you can work on．In fact，you can exercise your brain as often as you work out your arms or abs--and the results can be positive and empowering．It's helpful to think of your brain as you work out a muscle．To improve your brain，you can't simply repeat the same exercises over and over．Just as lifting a two pound weight will no longer challenge you，so will repetitive exercises such as crosswords or Sudoku．Once you master easy exercises，you must move on to harder ones in order to push your brain-like your muscles-to a new level．
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C．work out crosswords every day                      
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7．Whether we should allow marine （海洋的） parks to stay open has been widely debated in our community recently．A variety of different arguments have been put forward about it．
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14．Below is a brief analysis of the first name only．For an analysis of your full name and destiny，see our service for further details．
①The name of Iosefo creates a mature，self-possessed，and responsible nature．
②You are an organizer and leader who exercises sound and fair judgment in all your dealings，both business and personal．
③The name is a very practical influence，causing you to take your responsibilities seriously．
④At times it is difficult for you to see the lighter or more humorous side of a situation because of your serious attitude．
⑤Your highly capable and efficient nature makes it difficult for some people to approach you．
⑥Although you desire to serve your fellow man，you may at times lack tolerance for those who are less self-assured and whose approach to life is not as positive and optimistic as your own．
⑦You are strongly independent and would be happiest when working without supervision，preferably in your own business where you have the challenge of"standing or falling"by your own decisions．
⑧A good material standard of living is of utmost importance to you and you are careful to select only the best quality in all your purchases．
In your free Name and Birth Date Report you will find out about the powerful energies contained in your：
•first name
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We thank you for your interest and we look forward to talking with you further about the Kabalarian Philosophy after you have read your free Name and Birth Date Report．
 
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A．one's full name                                              B．one's first name
C．one's last name                                              D．one's legal name
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B．life purpose and inner potential measured from your date of birth
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A．To make an advertisement．
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Research has shown that cramming（临时突击）at the last minute for exerts is not efficient．It only adds more stress to your body and mind for lack of sleep and poor nutrition．
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A．They will be over soon!
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The package itself is of no interest to the shopper，who usually throws it away immediately． Useless wrapping accounts for much of the refuse put out by the average London house-hold each week  So why is it done？Some of it，like the cellophane on meat，is necessary，but most of the rest is simply competitive selling．  This is absurd．Packaging is using up valuable energy and resources and polluting the environment．
Recycling is already happening with milk bottles which are returned to the dairies（牛奶场），washed out，and refilled． But both glass and paper are being threatened by the growing use of plastic． More dairies are experimenting with plastic bottles．
The trouble with plastic is that it does not rot．Some environmentalists argue that the only solution to the problem of ever increasing plastic containers is to throw away plastic altogether in the shops，a suggestion unacceptable to many producers who say there is no alternative （替代品） to their handy plastic packs．
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72． The underlined part"this overuse of wrapping is not limited to luxuries"（in Paragraph l）means．C
    A． more wrapping is needed for ordinary products
    B． more wrapping is used for luxuries than for ordinary products
    C． too much wrapping is used for both luxury and ordinary products
    D． the wrapping used for luxury products is unnecessary
73． Packaging is important to producers becauseB．
    A． it is easy to use it again
    B．they want to attract more shoppers
    C． shoppers are all interested in beautiful packaging
    D． packaged things will not go rotten
74． According to the passage，dairies areC．
    A． experimenting with the use of paper bottles 
    B．giving up the use of glass bottles
    C． increasing the use of plastic bottles        
    D．reusing their paper containers
75． Some environmentalists think thatD．
    A． plastic packaging should be made more convenient
    B． no alternative can be found to plastic packaging
    C． too much plastic is wasted
    D． shops should stop using plastic containers．
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20．Trip 1 Black Bear Count
There have been several fires in this area in the last few years and the Office of Na-tional Parks is not sure how many black bears have survived．Some bears have been seen since the fires，and the Office has asked for volunteers to help count them．The entire trip will last three hours．Bookings essential．
Cost：free When：May 8
Trip 2  Garland Valley
Bring your binoculars（双筒望远镜）and lunch for this walk in a beautiful area of the Blue Mountains．Garland Valley is close to the town of Garland but is also part of the National Park．A lot of wild animals live in this area，including many rare birds．This is a great walk for bird-lovers．The trip lasts four hours．Bookings essential．
Cost：﹩15     When：May 8，May 15
Trip 3  Flashlight Adventure
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Cost：﹩12   When：May 8，May 15，May 22
Essential Equipment：
●Please bring enough water and food for all walks．
●Wear good walking shoes-no high heels or sandals．
●Wear a hat for day walks．
●Dress warmly for night walks．
●Children must be accompanied by an adult．
●Make sure your flashlight works well and bring extra batteries for night walks．
●Follow all instructions from guides during the walks．The mountains can be danger-ous．
Booking：
Bookings for the above trips can be made by telephone at 893-4847 or on the Inter-net www．bluemountaintour．com

66．Trip l is free most probably becauseC．
A．there have been several fires in the area
B．it lasts for a very short time
C．you must do some helping job on this trip
D．black bears are not rare animals
67．Trip 2 offers you a great opportunity toB．
A．have lunch in the valley
B．watch rare birds
C．count wild animals
D．work for the National Park
68．Which of the following is NOT necessary for Trip 3？D
A．Good walking shoes．    
B．Food and water．
C．A flashlight．    
D．A hat．
69．If you want to take all the trips but would not tire yourself out，you'd better takeAfirst．
A．Trip l    B．Trip 2    C Trip 3    D．another trip
70．Which of the following would be the best title for the passage？D
A．Wild animals in the National Park  
B．Hunting in the Great Mountains
C．Great Tips for Great Trips    
D．Discovery Trips in the Blue Mountains．

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