题目
题型：不详难度：来源：
Excused from recycling(回收利用) because you live in a high rise with a rubbish chute (垃圾道)? You won"t be for long. Miami"s Mark Shantzis has made it simple for those living in tall buildings to use the chute and recycle too .
In Shantzis" Hi-Rise Recycling System, a chute leads to a pie-shaped container with six boxes that can turn around when operated. The system , which fits in the same space as the chute and container now in use, enables glass , plastic , paper , metal , and other rubbish to go into separate boxes .
The system is controlled from a board next to the chute door. The board has a button for each class of recycling materials (as well as for unrecyclables). At the press of a button, a microcomputer locks all other floors" chute door and sets the recycling container turning until the right box comes under the chute. The computer also counts the loads and gives a signal by phone when the box is full. And a particular piece of equipment breaks up the nonrecyclables
Sorting(分类) recyclables before they are collected saves the use of expensive materials recovery equipment which otherwise has to do the sorting . Such equipment often makes recycled materials very expensive, so expensive that tons of recyclables remain wasted . Shantzis believes his system could help recycled materials become more cost-effective.
小题1:The purpose in writing this text is _________.
| A．to encourage people to recycle their rubbish |
| B．to introduce a recycling system for high rises |
| C．to describe the use of computer technology in recycling |
| D．to explain the need for rubbish collection in high rises |
| A．you"ll soon be living in a cleaner building |
| B．rubbish chutes will become out of date before long |
| C．you won"t wait long for your turn to recycle rubbish |
| D．it won"t be long before you"ll have to recycle your rubbish |
| A．lock the other floors" chute doors | B．check if the container is full |
| C．press the correct button | D．break up the rubbish |
| A．it reduces the cost of recycling | B．it saves time and space |
| C．it saves money for people living in high rises | |
| D．it makes better use of the existing recovery equipment |
答案
小题1:B
小题2:D
小题3:C
小题4:A
解析
小题1:
小题2:
小题3:
小题4:
核心考点
试题【 Excused from recycling(回收利用) because you live in a high rise with a rubbish chu】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
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.
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.
| 小题1: |
|
| 小题2: |
|
| 小题3: |
|
| 小题4: |
|
| 小题5: |
|
| 小题6: |
|
| 小题7: |
|
| 小题8: |
|
| 小题9: |
|
| 小题10: |
|
| 小题11: |
|
| 小题12: |
|
| 小题13: |
|
| 小题14: |
|
| 小题15: |
|
| 小题16: |
|
| 小题17: |
|
| 小题18: |
|
| 小题19: |
|
| 小题20: |
|
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 |
最新试题
- 1第八届全球孔子学院大会于2013年12月7日至8日在北京举行。大会指出2013年在中外双方共同努力下，孔子学院事业进一步
- 2老王家的鱼塘中放养了某种鱼1500条，若干年后，准备打捞出售，为了估计鱼塘中这种鱼的总质量，现从鱼塘中捕捞三次，得到数据
- 3下列词语中加线字的读音完全正确的一项是A．恐吓（hè）霉菌（jǔn）剔除（tī）深恶痛疾（wù）B．星宿（sù）消耗（h
- 4解方程：（1）x2-2x-4=0；（2）2(x-1)2x2+x-1x-6=0．
- 5将10×的物镜转换成40×的物镜后，下列哪项与观察到的实际现象不相符合[ ]A．视野变暗B．物象扩大C．观察到的
- 6在“验证机械能守恒定律”的实验中，打点计时器接在电压为U，频率为f的交流电源上，在实验中打下一条理想纸带，如图所示，选取
- 7设P为双曲线x2-y212=1上的一点，F1，F2是该双曲线的两个焦点，若|PF1|：|PF2|=3：2，则△PF1F2
- 8计算：(18-2)×2a=______．
- 9生物分类的基本单位是（ ）A．门B．纲C．种D．属
- 10已知m2+2mn=384，3mn+2n2=560．则2m2+13mn+6n2-444的值是（ ）A．2001B．200
热门考点
- 1假如你是生活在距今约七千年长江流域的原始居民， 你不可能看到下列哪一现象[ ]A．农田里水稻长势喜人B．荒地上人
- 2张华的胸围差是9厘米，李强的胸围差是12厘米，这说明（ ）A．张华比李强瘦弱B．张华比李强消化功能强C．张华比李强运动
- 3解方程，并回答问题：①的解x=____；②的解x=____；③的解x=____；④的解x=____；…（1）根据你发现的
- 4CaCO3、CuCl2溶液、KOH溶液、Zn粒三种物质单独或相互反应，没有涉及的基本反应类型是A．复分解反应B．分解反应
- 5下列几种金属分别放入溶质质量为10%的稀盐酸中，产生氢气速率最快的是A．铜B．锌C．镁D．铁
- 6血液由红细胞、白细胞、血细胞组成。 （ ）
- 72006年10月底太阳耀斑爆发强度为30年之最。下列现象可能与之关系较大的是A．某地突降暴雨B．有线长途电话突然中断C．
- 8阅读下面文章，完成后面的题（共12分）。和老妈过招①老妈89岁，正在人生的第二个童年时期，又活泼又率真。我正当中年，精力
- 9在△ABC中，a=80，b=100，A=30°，则B的解的个数是 [ ]A．0 B．1C．2 D．无法确定
- 10下列有关说法中错误的是（ ）A．食用甲醛浸泡过的食物对人体有害 B．霉变的大米、花生等不能食用C．棉花和羊毛都是天然纤