We produce 500 billion of plastic bags in a year worldwide and they are thrown away polluting oceans,  killing wildlife and getting dumped in landfills where they take up to 1000 years to decompose. Researchers have been unsuccessfully looking for a solution.
The 16-­year ­old Canadian high school student, Daniel Burd, from Waterloo Collegiate Institute,
has discovered a way to make plastic bags degrade(分解) in as few as 3 months, a finding that won him first prize at the Canada－Wide Science Fair, a $10 000 prize, a $20 000 scholarship, and a chance to revolutionize a major environmental issue.
Burd's strategy was simple: Since plastic does eventually degrade, it must be eaten by microorganisms (微生物). If those microorganisms could be identified, we could put them to work eating the plastic much faster than under normal conditions.
With this goal in mind, he ground plastic bags into a powder and concocted(調(diào)制) a solution of household chemicals, yeast(酵母) and tap water to encourage microbes growth. Then he added the plastic powder and let the microbes work their magic for 3 months. Finally, he tested the resulting bacterial culture on plastic bags, exposing one plastic sample to dead bacteria as a control. Sure enough, the plastic exposed to the live bacteria was 17% lighter than the control after six weeks.
The inputs are cheap: maintaining the required temperature takes little energy because microbes produce heat as they work, and the only outputs are water and tiny levels of carbon dioxide.
“Almost every week I have to do chores and when I open the closet door, I have piles of plastic bags falling on top of me. One day, I got tired of it and I wanted to know what other people are doing with these plastic bags. The answer: not much. So I decided to do something myself.” said Daniel Burd.
小題1:Daniel Burd won first prize at the Canada－Wide Science Fair because________.
A．he found a new kind of microorganism
B．he contributed much to environmental protection
C．he found a way to degrade plastics in shorter time
D．he could encourage microbes growth in an easier way
小題2:Daniel Burd exposed one plastic sample to dead bacteria to ________.
A．make the live bacteria work better
B．test how effective his method was
C．know which bacteria worked faster
D．control the temperature in the process
小題3:Maintaining the required temperature takes little energy because ________.
A．plastics can get hot easily
B．microbes can produce heat themselves
C．much carbon dioxide is produced
D．the temperature can be controlled
小題4:Daniel Burd got his idea from ________.
A．his school textbookB．the failure of researchers
C．his everyday workD．the practice of other people

小題1:C
小題2:B
小題3:B
小題4:C

試題分析：本文是關(guān)于環(huán)保的一篇文章。主要講述了一個加拿大的高中生，發(fā)現(xiàn)了一種能夠快速降解塑料的方法，并因此獲獎的故事。
小題1:細節(jié)理解題。從文章第二段“...has discovered a way to make plastic bags degrade(分解) in as few as 3 months, a finding that won him first prize at the Canada－Wide Science Fair...”可知，Daniel Burd因發(fā)現(xiàn)短時間降解塑料袋的方法而獲獎。故選C。
小題2:推理判斷題。從文章第四段中的“...exposing one plastic sample to dead bacteria as a control”可知，他這樣做的目的在于測試他的方法是否有效。故選B。
小題3:細節(jié)理解題。根據(jù)倒數(shù)第二段“maintaining the required temperature takes little energy 
because microbes produce heat as they work”可知，細菌在工作的時候會產(chǎn)生熱量。故選B。
小題4:推理判斷題。從文章最后一段丹尼爾·伯德說的話“Almost every week I have to do chores and when I open the closet door, ...So I decided to do something myself.” 可推知，他是從每天的工作中得到啟發(fā)的。故選C。
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科目：高中英語 來源：不詳 題型：完形填空

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小題1:64.Which of the following would be the best title for the passage?
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B．Acidic Peat Swamps
C．Strange Species
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A．the habitat will be more after a period of time
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A．help his students to gain a good memory.
B．train his students’ ability to learn
C．teach his students everything he knows
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A．to learn all the useful facts and formula by heart
B．to do everything as his teacher have said in class
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D．to think more while he is studying
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A．the teachers who had taught them were all experienced.
B．they used to work and study without a moment’s rest.
C．they had received more schooling than other people
D．they know how to study and worked hard
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科目：高中英語 來源：不詳 題型：閱讀理解

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Perls has studied many factors that contribute to long life, and he is the first to acknowledge that living longer isn’t likely to be simply a matter of genes. His previous work has shown, for example, that among most elderly people who live into their 70s and 80s, about 70% can owe their long life to environmental factors such as not smoking; eating a healthy, low-fat, low-calorie diet; and remaining socially engaged and mentally active throughout life.
It seems clear that those who live extremely long are benefiting from a special DNA. In fact, Perls believes that the older a person gets, the more likely it is that his or her genes are contributing to those extended years.
小題1:Which of the following is TRUE according to Paragraph 2?
A．Most long-living people have special long-life-related genes.
B．Ninety percent of the participants lived to 100 years of age.
C．All the long-living people have only one signature genetic cluster.
D．Scientists know how the integration of the genes helps people live long.
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A．most people living extremely long benefit from not smoking
B．living longer just depends on certain genetic recipes
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D．being mentally active has nothing to do with living an old age
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A．Remaining socially engaged helps a person to live long.
B．A genetic recipe can accurately predict who may live to 100 and beyond.
C．Perls is the first to think living longer is just a matter of genes.
D．The older he gets, the more likely the genes contribute to his extended years.
小題4:Which of the following would be the best title for the text?
A．Genes May Predict Who Lives to 100B．Environment And Genes
C．Genes, the Secret of Long LivingD．Lifestyle And Genes

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科目：高中英語 來源：不詳 題型：閱讀理解

Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino （厄爾尼諾）. The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.
One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe（津巴布韋）, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication（出版物）Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.
小題1:El Nino is known as ___.
A．the changing of the weather in southern Africa
B．the warming of waters in the Pacific Ocean
C．the weather which brings drought（旱災(zāi)）to Africa
D．the weather phenomenon（現(xiàn)象）that brings heavy rains to Africa
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A．they can provide a kind of early warning to the place that will suffer from drought
B．they can tell why Zimbabwe has little or no rain
C．they can do some research work in this field.
D．they can put all this information into their computers.
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A．Scientists come to understand how El Nino appears.
B．Three scientists from the USA work on this subject.
C．Southern Africa suffered a serious drought and many people died from hunger.
D．El Nino has something to do with Zimbabwe’s poor crops.
小題4:Which of the following is NOT true according to the article?
A．The computer is used in this research work.
B．Scientists know when an El Nino appears by means of the computer program.
C．The scientists published their results of the research work.
D．Nature is the name of the article written recently by the scientists.
小題5:What’s the best title for this passage?
A．Appearance of El Nino is Predictable（可預(yù)測的）
B．Drought in Zimbabwe
C．Early Warning System
D．Weather in Africa

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