6．LONDON:What could possibly be wrong with planting trees?The benefits are obvious, they firm the so——青夏教育精英家教网—

6．LONDON：What could possibly be wrong with planting trees？The benefits are obvious； they firm the soil，soak up （摄取） extra water and take carbon dioxide （二氧化碳） our of the atmosphere．
However，it now turns out that planting trees could add to global warming．
Tree roots do a great job of keeping soil firmly on the ground and out of the wind's power．The problem is that some of those dust clouds play an important part in soaking up carbon dioxide．
Huge dust storms blow out over the oceans from dry parts of North Africa and central Asia．Tons of dust are lifted and left as a thin film over the ocean surface．The dust fuels oceanic life．
Dust from China is carried east and left in the Pacific Ocean．If a tree-planting programme there is successful and the dust supply reduced，the net result may be that less carbon dioxide gets locked away in the ocean．
Andy Ridgwell，an environmental scientist from the University of East Anglia，has spent the past few years studying dust and says his work"shows clearly that the complexity of the system and the importance of not tinkering（粗劣地修补） with it without understanding the results．For this reason the need is to focus（集中） on cutting carbon dioxide giving off rather than monkeying （瞎弄） about with the land surface．"
An American scientist，Robert Jackson，has shown that when native grassland areas are invaded（侵入） by trees，carbon is lost from the soil．"We are studying why the soil carbon disappears，but one theory is that trees do a lot more of their growing above ground compared to grasses，so less carbon goes directly into the soil from trees，"says Jackson．
In wet areas of the world，the gain from trees absorbing carbon dioxide above ground seems to be outweighed（超过） by the loss of carbon from the soil below ground．Countries that plan to combat global warming by planting trees may have to think again．
Solutions to environmental problems are often more complex than they first appear，and understanding the Earth's climate is a very great challenge．
63．People usually hold the opinion thatC．
A．huge dust storms can destroy carbon dioxide
B．huge dust storms can destroy the oceans on the earth
C．huge dust storms can't do anything beneficial for man
D．planting trees is the only way to control huge dust storms
64．Andy Ridgwell，the environmental scientist，believes thatD．
A．dust plays a more important part than trees
B．trees should't have been planted in dry places
C．carbon dioxide is harmful to everything on the earth
D．environmental problems are more complex than expected
65．Robert Jackson's experiment proves thatB．
A．grassland areas should be covered by forests
B．trees hold more carbon than grasses
C．carbon can turn grass into dust
D．less carbon can make trees grow faster
66．The underlined word"combat"in the last paragraph meansB．
A．learn about
B．fight against
C．live with
D．give up．

5．Summer Holiday Fun 2010!
    The summer holidays are upon us again Here is our guide to summer holiday fun in Peterborough!
Peterborough Museum
    The Age of the Dinosaurs'is the museum's main attraction this summer．Get up close to prehistoric creatures via some great hands-on exhibits!Watch out for monsters lurking around every ember!The museum is open from 10：00am to 5：00pm Monday to Saturday，and from 12：00pm to 4：00 pm on Sundays in August．
Call 01733 864663 for details

    Saxon Youth Club
    School holiday fun：Young people aged 13-19 will be able to produce their own music，compete in spots activities，or try their hand at cooking at Saxon Youth Club，Saxon Community Centre，Norman Road．Peterborough every Monday and Wednesday from 3：00pm．PLUS an aero ball tournament will take place on Thursday 12th August between 3：30pm and 6：30pm．
    Call 01 353 720274 for details
Houghton Mill
    Alice through the Looking Class-a new production of the family favorite on Monday 30th．August．Bring rugs or chairs to sit on and a picnic if you wish to eat during the play．Gates open 5：30pro，performance 6：30pm-8：30pm．Tea room will be open until end of the interval．Adult￡10．Child￡7．Family￡20．
Booking advisable on 0845 4505157．

Farmland Museum and Denny Abbey
    Farmland Gaines：From Wellie Wanging to Pretend Ploughing matches，come and join the Farmland Team．Collect your sporting stickers and create a colorful rosette that is fit for a winner！No need to book，just turn up between 12：00pm and 4：00pm on Thursday 19th August Suitable for children aged four and above，each child should be accompanied by an adult and all activities are included in the normal admission price Tickets Cost￡7 per child．
    For further information，call 01223 810080．
56．If you are interested in cooking，you can go toC．
A．Peterborough Museum
B．Houghton Mill
C．Saxon Youth Club
D．Farmland Museum
57．You want to watch the new play with your parents，so it will cost youD．
A．￡7
B．￡17
C．￡27
D．￡20
58．Which of the following activities needs parents'company？A
A．Playing farmland games
B．Watching a new play．
C．Competing in spots activities．
D．Visiting the dinosaur exhibition．
59．If Tom comes to Peterborough for amusement on August 19，he will haveBactivities to choose from for himself．
A．one activity
B．two activities
C．three activities
D．four activities．

4．Sports medicine experts have observed for years that athletes such as long distance runners，especially women athletes，often display a lack of iron．Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women．
"We found that women who were normally inactive and then started a program of moderate exercise of middle degree showed sings of iron loss，"says Roseanne M．Lyle，associate professor at Purdue．Her study of 62formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise．Iron deficiency is very common among women in general，affecting one in four female teenagers and one in five women aged 18to 45，respectively．But the ratio is even greater among active women，affecting up to 80percent of female endurance athletes．This means，Lyle says，that"too many women ignore the amount of iron they take in"．Women of child-bearing age are at greatest risk，since their monthly bleeding is a major source of iron loss．Plus，many health-conscious women increase their risk by rejecting red meat，which contains the most easily absorbed form of iron．And because women often restrict their diet in an effort to control weight，they may not consume enough iron-rich food，and are liable to experience a deficiency．
Exercise can result in iron loss through a variety of mechanisms．Some iron is lost in sweat，and，for unknown reasons，intense endurance exercise is sometimes associated with bleeding of the digestive system．Athletes in high-impact sports such as running may also lose iron through a phenomenon where small blood vessels in the feet leak blood．
There are three stages of iron deficiency．The first and most common is having low iron reserves，a condition that typically has no symptoms．Fatigue and poor performance may begin to appear in the second stage of deficiency，when not enough iron is present to form the molecules（分子） of blood protein that transport oxygen to the working muscles．In the third and final stage，people often feel weak，tired，and out of breath-and exercise performance is severely compromised．
"People think that if they're not at the third stage，nothing is wrong，but that's not true，"says John L．Beard，who helped design the Purdue study．"You're not stage 3until your iron reserves go to zero，and if you wait until that point，you're in trouble．"
Beard and other experts say it's advisable for people to have a yearly blood test．If iron levels are low，talk with a physician to see if the deficiency should be corrected by changing your diet and taking iron-rich foods or by taking iron-added pills．
"Select breads and cereals with the words‘iron-added'on the label，"writes sports diet expert Nancy Clark．"This added iron supplements the small amount that naturally occurs in grains．"Clark also recommends cooking in iron pans，as food can obtain iron from the pan during the cooking process．

64．Which of the following may be the title for the passage？C
A．Science，sports and exercise
B．Correct iron deficiency
C．Women，Iron and exercise
D．Women，health and exercise
65．The third paragraph is developed mainly byB．
A．organizing the details according to the order of time
B．presenting the result followed by specific causes
C．beginnign with details followed by a general statement
D．making comparisons ad contrasts
66．What does it mean when you are in the third stage of iron defieiency？D
A．Nothing serious though you don't have much iron stored in the body．
B．There is not enough iron to form the molecules of blood protein to transport oxygen．
C．The small blood vessels in your reet are beginnig to leak blood．
D．No iron is ldft in your body and you would be in trouble without urgent measures．
67．What is the writer's attitude in writing this passage？D
A．Defensive． B．Persuasive．
C．Supportive． D．Objective．

3．Sometime early in the next century，human beings will move to Mars．They will live there for about a year，and then will be replaced with another group of pioneers．Building the base on Mars will advance our knowledge of the solar system and aid in our understanding of the earth．
We already know that Mars resembles the earth in many aspects：general size，presence of water，length of day，range of temperatures．These resemblances have caused many people to consider a centuries-long project：to terraform Mars．Terraforming means  altering a planet's surface so that Earth's life forms can survive there．This concept，previously found only in science fiction is now being seriously considered by scientists．
Terraforming Mars is theoretically simple：add nitrogen and oxygen to the atmosphere； pump water to the surface； and add the earth's plants and animals in the order in which they developed on Earth．But it will take at least 300years．
Some people think that such a project is too huge for humans to undertake，but there are very good reasons to make the attempt．The earth now contains some 6billion people，and no one has any idea of how many humans the earth can support．Our very existence and numbers are threatening many other species．We also have had some experience with terraforming our own planet：altering the landscape，the atmosphere and the climate．Currently terraforming earth has become a wiser activity as we try to control global warming，air and water pollution，and preserve some natural living places．
While the possibility of such a project is small，it is not impossible．Even if earth-bound societies come and go in the next 300years，the project can continue through the work of the Mars settlers without the need for constant backing from the earth．
The future existence of all the people in our world may very well depend upon our ability to terraform Mars．

63．What would be the best title for this passage？A
A．Terraforming Mars．        B．Saving the Earth．
C．Travelling to Mars．       D．A Newly-found Place．
64．What does the underlined word"altering"mean in the second paragraph？B
A．warming．         B．changing．
C．planting．         D．building．
65．According to the passage，the main purpose of terraforming Mars is toD．
A．do some scientific research work
B．find out its similarity to earth
C．avoid the dying away of many other species
D．find on Mars living place for the increasing human beings
66．The main reason for causing many people to consider terraforming Mars is thatA．
A．there are some resemblances between Earth and Mars．
B．terraforming Mars is theoretically simple
C．we have had some experience with terraforming our own planet：Earth
D．the development of science and technology is very rapid．

2．Bottled water has become the choice for people who are healthy and thirsty．Bottled water is all over the world．But some say the planet's health，and people's health may be suffering from it．
The idea that bottled water is safer for humans may not be true．The Natural Resources Defense Council of America said，"There is no promise that because water comes out of a bottle，it is cleaner or safer than water from the tap．"Another New York City-based action group added that some bottled water is"really just tap water in a bottle-sometimes more clean，sometimes not．"

It is not proven that bottled water is better than tap water．Nick Reeves from the Chartered Institution of Water and Environmental Management said，"The high mineral content （含量） of some bottled water makes them not good for feeding babies and young children．"Also，most bottled water doesn't have fluoride （氟化物），which can make teeth stronger．Kids are drinking more bottled water and less fluoridated tap water，and some say that's behind the recent rise in bad teeth．
Storing is another problem．Placed near heat，the plastic bottles can produce bad chemicals （化学物质） into the water．
According to the Environmental Protection Agency，some 2.7 million tons of plastic are used worldwide to bottle water each year．The plastic can take between 400 and 1，000 years to break down．
In terms of energy use，plastic bottles are also not cheap．One report said that if water and soft drink bottlers had used 10 percent recycled materials in their plastic bottles，they would have saved about 72 million gallons of gas．
So，if you are worried about the effect of bottled water on the Earth，you can take the following steps．
●Drink from your tap．Unless your government warns against this，it should be fine．
●Get a container （容器）．Carry your tap water in a steel or a lined drinking container，and clean it between uses．
●Keep it cool．Don't drink from a bottle that has been sitting in the sun，don't store it near chemicals，and don't reuse plastic bottles．
●Choose glass containers over plastic if possible．When finished，recycle!
48．What is the main idea of the article？D
A．Drinking tap water is the only choice for people．
B．Glass containers are better than plastic bottles．
C．Plastic bottles are harmful to the environment．
D．Bottled water may not be as good as we think．
49．What can we learn about plastic bottles from the article？C
A．They break down in less than 300 years．
B．They can be used for many other things．
C．They are a risk to the environment．
D．They are cheap to make．
50．According to the article，we can know that bottled water isB
A．no problem for the environment
B．more expensive than tap water
C．always safer than tap water
D．better for babies
51．Which of the following about tap water is NOT mentioned in the article？A
A．There are a lot of problems storing tap water．
B．Bottled water can be just tap water in a bottle．
C．It may be better for your teeth．
D．It may contain fluoride．

1．听第二段对话，回答第13-15题．
13．Why is the man against health clubs？
A．Because many club members lose their money as clubs fail．
B．Because many club members soon gain the weight again．
C．Because they are very expensive．
14．What is the probable reason of being fat according to the man？
A．Body chemistry．
B．Lack of will power．
C．Bad habits．
15．What do we know about the woman？
A．She is very fat．
B．She is a club member．
C．She is worried about her weight．

20．听第四段对话，回答第10-12题．
10．How long has Windsor Castle been a royal palace？
A．Over 900years．
B．Over 1000years．
C．Over 1200years．
11．Which of the following is the burial place of ten kings？
A．Semi State．
B．St．George's Chapel．
C．Windsor Castle．
12．What can we learn from the talk？
A．Semi State rooms are open to visitors all year round．
B．Queen Mary's Dolls'House is a miniature mansion．
C．The man ever visited the Windsor Castle．

19．听第三段对话，回答第7-9题．
7．How many nations will Chinese scientists visit next month？
A.3． B.5． C.10．
8．What does the California scientists'finding tell us？
A．A relationship between the coffee drinking and the heart-disease increase in women．
B．A relationship between alcohol drinking and the heart-disease increase in men．
C．A relationship between tea drinking and the heart-disease decrease in women．
9．What is not mentioned in the sports news？
A．The teams which played last night．
B．The Wingers had one win and four defeats．
C．How many wins the BBS has had altogether．

18．听第二段对话，回答第4-6题．
4．What is probably the man's nationality？
A．English B．America C．Chinese
5．What does the woman offer to do for the man？
A．Find a good dictionary，
B．Teach him English．
C．Help him with problems．
6．How does the woman think of the man's English？
A．Not very native B．Good． C．Poor．

17．Would you eat a ready meal from the fridge rather than cook from scratch？Have you been doing internet shopping rather than going to the stores？What can't you be bothered to do？
A study into how lazy British people are has found more than half of adults are so lazy they'd catch the lift rather than climb two flights of stairs．
Just over 2000people were quizzed by independent researchers at Nuffield Health，Britain's largest health charity．The results were astonishing．
About one in six people surveyed said if their remote control was broken，they would continue watching the same channel rather than get up．
More than one third of those questioned said they would not run to catch a bus．Worryingly，of the 654respondents with children，64% said they were often too tired to play with them．
This led the report to conclude that it's no wonder that one in six children in the UK are classified as obese （very fat） before they start school．
Dr Sarah Dauncey，medical director of Nuffield Health，said："People need to get fitter，not just for their own sake，but for the sake of their families，friends and evidently their pets too．
"If we don't start to take control of this problem，a whole generation will become too unfit to perform even the most  rudimentary  of tasks．"
And Scotland's largest city，Glasgow，was shamed as the most inactive city in the UK，with 75% surveyed admitting they do not get enough exercise，followed closely by Birmingham and Southampton，both with 67%．
The results cause serious challenges for the National Health Service，where obesity-related illnesses such as heart disease and cancer have been on a steady increase for the past 40years and are costing billions of pounds every year．

71．What causes children in the UK to be obese？D
A．Eating ready meal          B．Watching TV
C．Doing Internet shopping    D．Being lazy
72．What can be inferred from the passage？D
A．British people are too lazy to do anything．
B．Internet shopping will do harm to your health．
C．Many people would not run to catch a bus in Britain．
D．People should be more active and take regular exercise to keep fit．
73．Which of the following is Not true according to the passage？A
A．One sixth of British people use remote control when watching TV．
B．People will benefit not only themselves but their families by getting fit．
C．Fatness can cause diseases such as heart disease and cancer．
D．More people get obesity-related illnesses now than 40years ago．
74．What does the underlined word  rudimentary  most probably mean？A
A．basic       B．serious
C．vital       D．hard
75．All the following are among the most lazy cities in the UK exceptC．
A．Glasgow       B．Birmingham
C．Nuffield      D．Southampton．

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