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【单选题】
【R7】 SOME RITUALS OF MODERN DOMESTIC LIVING VARY LITTLE THROUGHOUT THE DEVELOPED WORL D. ONE SUCH IS THE MUNICIPAL REFUSE COLLECTION, USUALLY ONCE A WEEK, YOUR RUBBISH BAGS OR THE CONTENTS OF YOUR BIN DISAPPEAR INTO THE BOWELS OF A SPECIAL LORRY AND ARE CARTED AWAY TO THE LOCAL TIP. TO ECONOMISTS, THIS CEREMONY IS PECULIAR, BECAUSE IN MOST PLACES IT IS FRE E. YES, HOUSEHOLDS PAY FOR THE SERVICE OUT OF LOCAL TAXES. 【R6】______YET THE MARGINAL COST OF RUBBISH DISPOSAL IS NOT ZERO AT ALL. THE MORE PEOPLE THROW AWAY, THE MORE RUBBISH COLLECTORS AND TRUCKS ARE NEEDED, AND THE MORE THE LOCAL COUNCIL HAS TO PAY IN LANDFILL AND TIPPING FEES. 【R7】______BUT AS DON FULLERTON AND THOMAS KINNAMAN, TWO AMERICAN ECONOMISTS, HAVE FOUND, THIS SEEMINGLY EASY APPLICATION OF ECONOMIC SENSE TO AN EVERYDAY PROBLEM HAS SURPRISINGLY INTRICATE AND SOMETIMES DISAPPOINTING RESULTS. IN THE PAST FEW YEARS, SEVERAL AMERICAN TOWNS AND CITIES HAVE STARTED CHARGING HOUSEHOLDS FOR GENERATING RUBBIS H. THE COMMONEST SYSTEM IS TO SELL STICKERS OR TAGS WHICH HOUSEHOLDERS ATTACH TO RUBBISH BAGS OR CANS. ONLY BAGS WITH THESE LABELS ARE PICKED UP IN THE WEEKLY COLLECTIO N. IN THE PAPER PUBLISHED LAST YEAR FULLERTON AND KINNAMAN STUDIED THE EFFECTS OF ONE SUCH SCHEME, INTRODUCED IN JULY 1992 IN CHARLOTTESVILLE, VIRGINIA, A TOWN OF ABOUT 40,000 PEOPL E. RESIDENTS WERE CHARGED 80 CENTS FOR EACH STICKER. THIS MAY SOUND LIKE THE SENSIBLE USE OF MARKET FORCES. IN FACT, THE AUTHORS CONCLUDE, THE SCHEMES BENEFITS DID NOT COVER THE COST OF PRINTING STICKERS, THE STICKER SELLERS COMMISSIONS, AND THE WAGES OF THE PEOPLE RUNNING THE SCHEM E. 【R8】______ THIS IS INEFFICIENT: COMPACTING IS DONE BETTER BY MACHINES AT LANDFILL SITES THAN BY INDIVIDUALS, HOWEVER ENTHUSIASTICALLY. THE WEIGHT OF RUBBISH COLLECTED IN CHARLOTTESVILLE FELL BY A MODEST 14% . 【R9】______THE ONE BRIGHT SPOT IN ALL THIS SEEMS TO HAVE BEEN A 15% INCREASE IN THE WEIGHT OF MATERIALS RECYCLED, SUGGESTING THAT PEOPLE CHOSE TO RECYCLE FREE RATHER THAN PAY TO HAVE THEIR REFUSE CARTED AWAY. BUT THE FEE MAY HAVE LITTLE TO DO WITH THE GROWTH IN RECYCLING, AS MANY CITIZENS WERE ALREADY PARTICIPATING IN CHARLOTTESVILLE'S VOLUNTARY RECYCLING SCHEM E. 【R10】______TO DISCOURAGE DUMPING, FOR INSTANCE, LOCAL COUNCILS MIGHT HAVE TO SPEND MORE ON CATCHING LITTERS, OR RAISE FINES FOR LITTERING, OR CUT THE PRICE OF LEGITIMATE RUBBISH COLLECTIO N.
A.
TRUE, THE NUMBER OF BAGS OR CANS COLLECTED DID FALL SHARPLY, BY 37% BETWEEN MAY AND SEPTEMBER 1992. BUT RATHER THAN BUY MORE TAGS, PEOPLE SIMPLY CRAMMED MORE GARBAGE — ABOUT 40% MORE INTO EACH CONTAINER.
B.
THIS LOOKS LIKE THE MOST BASIC OF ECONOMIC MISUNDERSTANDINGS: IF RUBBISH DISPOSAL IS FREE, PEOPLE WILL PRODUCE TOO MUCH RUBBIS H. THE OBVIOUS ECONOMIC SOLUTION IS TO MAKE HOUSEHOLDS PAY THE MARGINAL COST OF DISPOSING OF THEIR WAST E. THAT WILL GIVE THEM AN INCENTIVE TO THROW OUT LESS AND RECYCLE MOR E.
E.
CITY AUTHORITIES ARE NOW CONSIDERING A PROJECT TO TEACH GOVERNMENT WASTE COLLECTORS THE SKILLS, SUCH AS WHAT RUBBISH TO COLLECT AND HOW TO CLASSIFY IT. IF APPROVED, THE PROJECT WILL HELP EASE THE FINANCIAL BURDEN OF THE CITY'S WASTE TREATMENT. D. IT WOULD BE FOOLISH TO GENERALIZE FROM THIS ONE CASE, BUT THE MORAL IS CLEAR, ECONOMIC INCENTIVES SOMETIMES PRODUCE UNFORESEEN RESPONSES. E. LESS PLEASING STILL, SOME PEOPLE RESORTED TO ILLEGAL DUMPING RATHER THAN PAY TO HAVE THEIR RUBBISH REMOVE D. THIS IS HARD TO MEASURE DIRECTLY. BUT THE AUTHORS, OBSERVING THAT A FEW HOUSEHOLDS IN THE SAMPLE STOPPED PUTTING RUBBISH OUT, GUESS THAT ILLEGAL DUMPING MAY ACCOUNT FOR 30% — 40% OF THE REDUCTION IN COLLECTED RUBBIS H.
F.
BUT AT THE MARGIN THE PRICE IS ZERO: THE FAMILY THAT FILLS FOUR BINS WITH RUBBISH EACH WEEK PAYS NO MORE THAN THE ELDERLY COUPLE THAT FILLS ON E.
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参考答案:
举一反三
【单选题】验光接待中了解戴镜史,需问顾客原眼镜的( )。
A.
清晰度
B.
价格
C.
年限
D.
验光出于哪一家公司
【简答题】在光照下 ,甲烷能跟氯气发生 反应 ,反应后生成 种产物 ,其中产物俗名为氯仿的结构简式是 。
【多选题】20世纪80年代末、90年代初,世界格局发生了重大变化,这些变化可概括为(    )。
A.
两极称霸的格局已经打破    
B.
新的世界格局尚未形成
C.
美国独霸世界的格局已形成    
D.
多极化世界已经形成
E.
世界正处于新旧交替动荡时期
【多选题】20世纪80年代末、90年代初,世界格局发生重大变化,这些变化可以概括为( )。
A.
两极称霸的格局已经打破
B.
美国独霸世界的格局已形成
C.
新的世界格局尚未形成
D.
世界正处在新旧格局交替动荡时期
【简答题】在光照下,甲烷能跟氯气发生____反应,反应后主要生成____种产物;其中产物俗名为氯仿的结构式是____。
【简答题】在光照下,甲烷能跟氯气发生______反应,反应后生成______种产物。
【判断题】20世纪80年代末90年代初世界格局巨变体现在单极格局已经形成、多极格局已经形成
A.
正确
B.
错误
【单选题】多媒体系统共分为几层?
A.
B.
C.
D.
【多选题】20世纪80年代末90年代初,世界格局发生重大变化,这些变化可概括为()。
A.
两极称霸的格局已经打破
B.
新的世界格局尚未形成
C.
世界正处新旧交替动荡时期
D.
多极化世界已经形成
【简答题】系统的线性特性是指系统同时具有两个特性,其中 是 指若干激励信号同时作用于系统产生的响应等于各个激励信号单独作用于系统产生的响应之和, 是指如果系统的输入激励变化为原来的a 倍时,系统的输出响应也随之变化原来的a 倍。
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