___ elephants are different from wild elephants in many aspects, including their tempers.A) Cultivated B) Regulated C) Civil D) Tame

Text 1 Habits are a funny thing.We reach for them mindlessly,setting our brains on auto-pilot and relaxing into the unconscious comfort of familiar routine."Not choice,but habit rules the unreflecting herd,"William Wordsworth said in the 19th century.In the ever-changing 21st century,even the word"habit"carries a negative implication.So it seems paradoxical to talk about habits in the same context as creativity and innovation.But brain researchers have discovered that when we consciously develop new habits,we create parallel paths,and even entirely new brain cells,that can jump our trains of thought onto new,innovative tracks.Rather than dismissing ourselves as unchangeable creatures of habit,we can instead direct our own change by consciously developing new habits.In fact,the more new things we try—the more we step outside our comfort zone—the more inherently creative we become,both in the workplace and in our personal lives.But don't bother trying to kill off old habits;once those ruts of procedure are worn into the hippocampus,they're there to stay.Instead,the new habits we deliberately ingrain into ourselves create parallel pathways that can bypass those old roads."The first thing needed for innovation is a fascination with wonder,"says Dawna Markova,author of"The Open Mind"and an executive change consultant for Professional Thinking Partners."But we are taught instead to'decide,'just as our president calls himself'the Decider.'"She adds,however,that"to decide is to kill off all possibilities but one.A good innovational thinker is always exploring the many other possibilities."All of us work through problems in ways of which we're unaware,she says.Researchers in the late 1960s discovered that humans are born with the capacity to approach challenges in four primary ways:analytically,procedurally,relationally（or collaboratively）and innovatively.At the end of adolescence,however,the brain shuts down half of that capacity,preserving only those modes of thought that have seemed most valuable during the first decade or so of life.The current emphasis on standardized testing highlights analysis and procedure,meaning that few of us inherently use our innovative and collaborative modes of thought."This breaks the major rule in the American belief system—that anyone can do anything,"explains M.J.Ryan,author of the 2006 book This Year I Will...and Ms.Markova's business partner."That's a lie that we have perpetuated,and it fosters commonness.Knowing what you're good at and doing even more of it creates excellence."This is where developing new habits comes in.22.Brain researchers have discovered that the formation of new habits can be________

A.predicted
B.regulated
C.traced
D.guided

Text 3 Over the past decade,many companies had perfected the art of creating automatic behaviors—habits—among consumers.These habits have helped companies earn billions of dollars when customers eat snacks or wipe counters almost without thinking,often in response to a carefully designed set of daily cues.“There are fundamental public health problems,like dirty hands instead of a soap habit,that remain killers only because we can't figure out how to change people's habits，”said Dr.Curtis,the director of the Hygiene Center at the London School of Hygiene&Tropical Medicine.“We wanted to learn from private industry how to create new behaviors that happen automatically.”The companies that Dr.Curtis turned to—Procter&Gamble,ColgatePalmolive and Unilever—had invested hundreds of millions of dollars finding the subtle cues in consumers'lives that corporations could use to introduce new routines.If you look hard enough,you'll find that many of the products we use every day—chewing gums,skin moisturizers,disinfecting wipes,air fresheners,water purifiers,health snacks,teeth whiteners,fabric softeners,vitamins—are results of manufactured habits.A century ago,few people regularly brushed their teeth multiple times a day.Today,because of shrewed advertising and public health campaigns,many Americans habitually give their pearly whites a cavitypreventing scrub twice a day,often with Colgate,Crest or one of the other brands.A few decades ago,many people didn't drink water outside of a meal.Then beverage companies started bottling the production of faroff springs,and now office workers unthinkingly sip bottled water all day long.Chewing gum,once bought primarily by adolescent boys,is now featured in commercials as a breath freshener and teeth cleanser for use after a meal.Skin moisturizers are advertised as part of morning beauty rituals,slipped in between hair brushing and putting on makeup.“Our products succeed when they become part of daily or weekly patterns,”said Carol Berning,a consumer psychologist who recently retired from Procter&Gamble,the company that sold$76 billion of Tide,Crest and other products last year.“Creating positive habits is a huge part of improving our consumers'lives,and it's essential to making new products commercially viable.”Through experiments and observation,social scientists like Dr.Berning have learned that there is power in tying certain behaviors to habitual cues through relentless advertising.As this new science of habit has emerged,controversies have erupted when the tactics have been used to sell questionable beauty creams or unhealthy foods.
According to Dr.Curtis,habits like hand washing with soap_____

A.should be further cultivated
B.should be changed gradually
C.are deeply rooted in history
D.are basically private concerns

共用题干
Earth's Inner Core

Scientists have long struggled to understand what lies at the planet's center.Direct
observation of its center is impossible,so researchers must_________(1)to other evidence.
In 1889,a German scientist detected a severe earthquake in Japan.Geophysicists
concluded that shock waves_________(2) jolts（晃动）from one side of Earth through
the center to the other side.Then in 1936,Danish geophysicist lnge Lehmann studied the
waves' __________ (3) to determine that within Earth's core of molten（熔化了的）iron
lies a solid inner core一but_________(4) that core was made of eluded（难倒）her.
Other geophysicists quickly determined that Lehmann's inner core was composed mostly
_________(5) iron.Since then,Lehmann's discovery has _________(6)
conventional Earth science.
But now scientists are challenging traditional theory with new and radical_________
(7).For example,Earth's center could actually contain an"inner core within the inner
core."claim lshii and colleague Adam Dziewonski.
Analyzing hundreds of thousands of earthquake wave _________(8),they
maintain that the inner core has at its heart a tiny, even more solid sphere（球体）.This
sphere"may be the oldest fossil_________(9)from the formation of Earth,"says Dziewonski.
Dziewonski and Ishii speculate that shortly _________(10)Earth formed around
4.8 billion years ago,a giant asteroid（小行星）smashed into the young planet and nearly
melted it.But Earth's center didn't quite melt;it_________(11)mass as the planet
cooled. The core within a core may be the kernel（核心）that endured. " Its presence
could change our basic ideas about the_________(12)of the planet,"Dziewonski
says.
Dziewonski's idea is tame（温和的）compared to the_________( 13 ) theories of
independent geophysicist J. Marvin Herndon.Earth's inner core is made not of iron,he
claims,but a_________(14)of nickel and silicon.Herndon has a truly revolutionary
notion : Within the nickel silicide（硅化物）inner core is also an "inner" inner core一an
8km-wide ball of the element uranium.Uranium is radioactive.Herndon thinks the uranium
releases heat energy as its atoms_________(15)fission-split and crash into one
another in a chain reaction.In other words,we may live on top of a gigantic, "natural"
nuclear power plant.

_________(1)
A:try
B:leave
C:turn
D:point

共用题干
Natural Food

Increasingly,over the past ten years,people一especially young people一have become aware of the need to change their eating________(51),because much of the food they eat,particularly processed foods,is not good________(52)the health.Consequently,there has been a growing ________(53)in natural foods;foods which do not________(54)chemical additives and which have not been________(55)by chemical fertilizers,widely used in farming today.
Natural foods,for example,are vegetables,fruit and grain which have been grown in soil that is rich in organic matter. In simple________(56),this means that the soil has been________ (57)by unused vegetable matter,which provides it with essential vitamins and minerals________ (58)in itself is a natural process compared with the use of chemicals and fertilizers,the main ________(59)of which is to increase the________(60)(but not the quality)of foods grown in
commercial farming areas.
Natural foods also include animals which have been________(61)to feed and move freely in healthy________(62).Compare this with what happens in the________(63)production of poultry （家禽）:there are battery farms,for example,where thousands of chickens live crowded together in one building and are fed________(64)food which is little better than rubbish.Chickens kept in this way are not only tasteless as food;they also produce eggs which________(65)important vitamins.

_________(57)
A:cultivated
B:nourished
C:supplied
D:fed