Garbage is unwanted or unusable materials. As long as there are people on the p
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Garbage is unwanted or unusable materials. As long as there are people on the planet，there will be garbage Garbage is directly linked to human development,both technologically and socially.The composition of waste has yared Over time and location，with industrlal development.Examples of this include plastics．Some garbage has economical value and can be recycled once correctly recovered.
For most of us, "out of s
ight,out of mind": throw it away and it`s gone.But imagine what really happens to all the rubbish the world throws away.Now suddenly，the government is worried about mountains of garbage piling up with no place to put them all．China`s increasing prosperity and urbanlsm create tons of garbage since the 1980s，causing tons of trouble.The amount of paper,plastic and other garbage has increased more than three times in two decades to about 300 million tons a year．As busy families are shifting from fresh to packaged foods,more garbage is expected．
There are also a huge number of people who go through the garbage to find anything that can be of value and recycled!The recycling is carried out every day when peope come to your house to take away your newspapers and cardboard，plastic and metal items.Every neighborhood has a garbage point.Take a train trip and there are recycling yards all along the tracks in every city. Food waste is collected by farmers to feed animals.
Even though we make an effort to recycle our solid waste，the amount of waste keeps increasing each year．Our biggest problem is where to put the solid waste and how to keep it from polluting our environment.If the solid waste is disposed incorrectly,it can pollute earth`s surface an underground water supplies.Currently,Our municipal waste goes to landfills or garbage dumps.
The waste must be treated to keep rats，flies and other anlmas from building their homes in the landfills.The treatrment also prevents the growth of bacteria that carry diseases．
The government knows such garbage disposal（处理）will always draw complaints．What they need to do is invest more money into bullding and maintaining better evelironment.
66. In the eyes of the author,________.
A.garbage should all be thrown away
B.garbage can all be recycled for its economical value
C.every kind of garbage has its practical value
D.garbage is closely related to the prrogress of society
67．From the second paragraph we can infer that_________．
A.throwing away rubbish is the only way at present
B.mountains of rubbish appear everywhere
C.the government has trouble dealing with rubbish
D.lanudfill treatment is the best way at present
68. In the 1980s,the amount of garbage was estimated about _______.
A.300 million tons B.200 million tons
C.100 million tons D.50 million tons
69. The attitude of the author towards recycling waste is
A.unfriendly B.objective C.supportive D.disappointed
70. What will be talked about after the last paragraph?
A.The government will respond to the people`s complaints．
B.Proper ways to deal with rubbish will be found.
C．The government will take measures to control the public．
D.The rubbish mountains will be removed.
答案
66—70 DCCBB
解析
举一反三
Ocean Acidification: "Evil Twin" Threatens World"s Oceans
The rise in human emissions of carbon dioxide is driving dangerous changes in the chemistry and ecosystems of the world"s oceans, international marine（海洋的）scientists have warned. "Ocean conditions are already more extreme than those experienced by marine organisms and ecosystems for millions of years," says the latest issue of the journal Trends in Ecology and Evolution. "This emphasizes the urgent need to adopt policies that markedly reduce CO2 emissions."
Ocean acidification, which the researchers call the "evil twin of global warming", is caused when the CO2 emitted by human activity, mainly burning fossil fuels, dissolves into the oceans. It is happening independently of, but in combination with, global warming. Evidence gathered by scientists over the last few years suggests that ocean acidification could represent an equal -- or perhaps even greater threat -- to the biology of our planet than global warming. More than 30% of the CO2 released from burning fossil fuels, cement production, deforestation and other human activities goes straight into the oceans, turning them gradually more acidic.
"The resulting acidification will impact many forms of sea life, especially organisms whose shells or skeletons are made from calcium carbonate（碳化钙）, like corals and shellfish. It may interfere with the reproduction of plankton species which are a vital part of the food web on which fish and all other sea life depend," he adds.
The scientists say there is now persuasive evidence that mass extinctions in past Earth history, like the "Great Dying" of 251 million years ago and another wipeout 55 million years ago, were accompanied by ocean acidification, which may have delivered the deathblow to many species that were unable to cope with it. "These past periods can serve as great lessons of what we can expect in the future, if we continue to push the acidity the ocean even further" said lead author, Dr. Carles Pelejero, from ICREA and the Marine Science Institute of CSIC in Barcelona, Spain. "Given the impacts we see in the fossil record, there is no question about the need to immediately reduce the rate at which we are emitting carbon dioxide in the atmosphere," he said further.
"Today, the surface waters of the oceans have already acidified by an average of 0.1 pH units from pre-industrial levels, and we are seeing signs of its impact even in the deep oceans," said co-author Dr. Eva Calvo, from the Marine Science Institute of CSIC in Spain. "Future acidification depends on how much CO2 humans emit from here on -- but by the year 2100 various projections indicate that the oceans will have acidified by a further 0.3 to 0.4 pH units, which is more than many organisms like corals can stand," Prof. Hoegh-Guldberg says.
"This will create conditions not seen on Earth for at least 40 million years."
"These changes are taking place at rates as much as 100 times faster than they ever have over the last tens of millions of years" Prof. Hoegh-Guldberg says. Besides directly impacting on the fishing industry and its contribution to the human food supply at a time when global food demand is doubling, a major die-off in the oceans would affect birds and many land species and change the biology of Earth as a whole profoundly, Prof. Hoegh-Guldberg adds.
67. What is the biggest cause of the ocean acidification according to the report?
A. the increase of carbon dioxide emission by human beings
B. The worsening of global warming
C. The disappearance of the world’s forests
D. The decrease of marine life
68. In what way according to the report does ocean acidification affect the majority of marine life?
A. It affects their reproduction B. It destroys their food chain
C. It affects the growth of their young D. destroys their habitats
69. Which of the following statements is NOT true about ocean acidification?
A. Ocean acidification has made ocean conditions most extreme in millions of years.
B. Ocean acidification may do more damage than global warming to human and plant life in the long run.
C. Ocean acidification is suspected of having caused mass extinctions of life in past Earth history.
D. The effects of ocean acidification are not now but will be felt in the foreseeable future.
70. From the report we can clearly feel that the situation with ocean acidification __________.
A. is quite optimistic B. remains well under control
C. looks more than urgent D. is already out of control
Most sharks are dangerous. The largest kind of sharks—the whale shark—has small teeth and is quite harmless to people. However, blue sharks, tiger sharks, white sharks and hammerheads are enemies of man.
Man-eaters are always a danger to swimmers in shark waters. Sometimes, though, men have used strange methods when they’re suddenly faced with a shark.
During world War Ⅱ, soldiers and sailors whose boats or planes were destroyed drifted(漂流) helplessly on the ocean in small rafts(筏子). While waiting to be saved, the men had to struggle to stay alive and were often attacked by sharks. In some cases, they had few weapons to protect themselves with. They found that just splashing(溅水) water seemed to help keep the sharks away.
One sailor was swimming for his life in the Atlantic Ocean after his boat had been blown up. He saw a shark swimming towards him. He hit the shark with his bare fist, and that drove it off.
Once, in Australia, a fisherman was fishing after sunset. He hooked a big fish and drew it towards the shore. His line broke when the fish was only a few yards from the shore. The fisherman waded(涉水) into the water to try to catch it with his hands. In the dim light, it looked like the kind of fish that could be dealt with without danger.
He put his arms around the fish and wrestled with it. Dragging it to the beach turned out to be harder than he had expected, but at last he pulled it in. When he turned a light on it, he was amazed. He had caught a shark. It was small for a shark, but it was the man-eating type and was about as long as a tall man.In a word, the best way to deal with sharks is to keep far away from them.
60. The shark that is least dangerous to man is the ________.
A. white shark B. whale shark C. tiger shark D. hammerhead shark
61. This story tells you that sharks are usually ________.
A. friendly B. small C. afraid of people D. dangerous
62. After the Australian fisherman found he had caught a shark, he was _________.
A. surprised B. frightened C. unhappy D. angry
63. This story tells you that the best way to handle sharks is to ________.
A. hit them with your fist B. keep far away from them
C. splash water D. wrestle with them
64. The passage mainly tells us something ________.
A. about fishing sharks B. about sharks
C. how to eat sharks D. that sharks are man’s enemies
阅读下列短文，掌握其大意，然后从26—50各题所给的四个选项中，选出一个最佳答案。
The use of nuclear power has already spread all over the world, However, scientists still have
not 36 on what should be done with the large 37 of waste material that tend to increase everyyear .
Most waste materials are dealr38simply by placing them39.But nuclear waste40be dealt with very carefully. It gives41dangerous radiation and it will continue to be 42for hundreds, thousands, even mil-lions of years.
How should we get rid of such waste material in a43that it will not harm the environment? Where can we safely44it? One idea is to put this45waste inside a 46 container ,47is then dropped to the deep bottom of the ocean. But some scientists believe that this way of dealing with nuclear waste could kill fish and other living things in the oceans48interfere(干扰)with their growth.. Another way49nuclear waste is to send it into space, to the sun, 50 it would be burned. Some scientists suggests suggest that this polluting material51buried thousands of meters under the52surface. Such under-ground areas must be lree53possible earthquakes. Advance id being54,But it may still be many years55this problem could be finally settled.
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Getting a new PC is one thing, Keeping it running smoothly is quite another. While a personal computer should continue to perform well for years, users know that system unsteadiness does exist Yet you can reduce it to the smallest amount by following the tips below .
First, put in as little software as possible. You’11 have fewer software –related problems and a system that is easier to manage.
Second, you should ensure that you have as much memory (RAM) in your PC as you need If you run Windows 98,your computer should have as least 128 megabytes (MB)of RAM and more You can also get by with 128 MB of RAM if you use Windows NT or Windows2000,but these operating systems will run much more smoothly if you have 256 MB of RAM or more.
Third, make sure you buy good hardware. Noname products may be cheaper and sometimes just as good as named-brand products, but name-brand products usually became well-known because of famous companies because Windows will more often support the hardware that you buy ,If you are starting out with to have been tested thoroughly with your operating system, and you will generally experience fewer problems.
Fourth, do prepare for disaster .No matter how well your system runs when you get it ,the day will come when it will need to be replaced .Hopefully, you will replace it because technology has become outdated, but you may need to replace it also because the hard drive crashes or you begin experiencing problems that no one can figure out .That’s why it ‘s important to you’re your important to copy your important information regularly. Whether you use a tape backup device or a CD-RW drive, it’s important to make a regular backup plan and stick to it .
小题1:If you want to use Windows2000,but your computer only has 64MB.What will you have to do?
A. Change its RAM for at least 256MB, B. Put in good software in your computer.
C. Enlarge its memory to at least 128 MB D. Buy another new computer to match it .
小题2: How many pieces of advice on buying good hard-ware does the writer give us ?
| A．Three | B．Two | C．One | D．four |
| A．your computer will save the important information when its hard drive crashes |
| B．Your computer might lose all the information it stores when it crashes . |
| C．You must not put in much software. |
| D．You’d better use 128 MB of Ram if you run Windows NT. |
| A．the Tips You must Follow |
| B．How to Start out with a Computer |
| C．How to Use your PC Better |
| D．How to Keep Your PC Stable |
| A．System unsteadiness | B．personal computer |
| C．To perform well | D．Getting a new PC |
The easiest way for the English to deal with their social discomfort is to avoid social interaction altogether, by choosing either leisure (闲暇) activities that can be performed in the privacy of one’s own house, or outdoor activities that follow their interest without direct contact with anyone other than one’s own family members, such as going for a walk, or to the cinema, or shopping．
In recent survey, over half of all the leisure activities were of this private domestic type, and of the top ten pastimes, only two—having friends round for a meal or drink, and going to the pub—could be described as ‘sociable’．The most domestic activities are the most popular: watching TV, listening to the radio, reading, DIY （Do It Yourself） and gardening．Even when the English are being sociable, the survey findings show that most of them would much rather entertain a few close friends or relatives in the safety of their own homes than venture out among strangers．
In the latest national census survey （人口普查）, over half of the entire adult male population had been DIYing in the four weeks before the census date．Nearly a third of the female population had also been busily improving their homes, and their work with their gardens was equally obvious: 52 percent of all English males and 45 percent of females had been out there, cutting branches and weeding grass．
Even among people claiming to belong to a particular religion, only two percent attend services every week．The rest of the population can be found every Sunday at their local garden center or DIY superstore．And when they want a break from caring about their own homes and gardens, they go on trips to visit bigger and better houses and gardens, such as the stately homes and gardens opened to the public by the National Trust and the Royal Horticulture Society．Visiting grand country houses always ranks as one of the most popular national pastimes．
45．The result of the survey shows that ________.
A．about half English people enjoy working in their gardens
B．8 out of 10 pastimes can be described as social activities
C．2 percent of the religious people enjoy visits to public houses
D．visiting stately homes is the most popular national pastime
46．According to the passage, the English enjoy all of the following EXCEPT________.
A．the social activities, such as gathering with friends
B．working at home and in their gardens
C．dining out in a public place among strangers
D．visits to stately homes and gardens
47．The underlined word “domestic” probably means________.
A．public B．household C．outdoor D．collective
48．The passage mainly tells us about________.
A．why the English don’t like social activities
B．how the English spend their leisure time
C．what the result of a recent census survey is
D．where the English hold their private activities
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