Energy independencehas a nice ring to it.Doesn't it? If you think so,you're not alone,because energy independence has been the dream of American president for decades,and never more so than in the past few years,when the most recent oil price shock has been partly responsible for kicking off the great recession.
“Energy independence”and its rhetorical (修辞的) companion“energy security” are,however,slippery concepts that are rarely though through.What is it we want independence from,exactly?
Most people would probably say that they want to be independent from imported oil.But there are reasons that we buy all that old from elsewhere.
The first reason is that we need it to keep our economy running.Yes,there is a trickle(涓涓细流)of biofuel(生物燃料)available,and more may become available,but most biofuels cause economic waste and environmental destruction.
Second,Americans have basically decided that they don't really want to produce all their own oil.They value the environmental quality they preserve over their oil imports from abroad. Vast areas of the United States are off-limits to oil exploration and production in the name of environmental protection.To what extent are Americans really willing to endure the environmental impacts of domestic energy production in order to cut back imports?
Third,there are benefits to trade.It allows for economic efficiency,and when we buy things from places that have lower production costs than we do,we benefit.And although you don't read about this much,the United States is also a large exporter of oil products,selling about 2 million barrels of petroleum products per day to about 90 countries.
There is no question that the United States imports a great deal of energy and,in fact,relies on that steady flow to maintain its economy.When that flow is interrupted,we feel the pain in short supplies and higher prices.At the same time,we obtain massive economic benefits when we buy the most affordable energy on the world market and when we engage in energy trade around the world.
1.What does the author say about energy independence for America?
A. It sounds very attractive.
B. It ensures national security.
C. It will bring oil prices down
D. It has long been everyone’s dream.
2.Why does America rely heavily on oil imports?
A. It wants to expand its storage of crude oil(原油).
B. Its own oil reserves are quickly running out.
C. It wants to keep its own environment undamaged.
D. Its own oil production falls short of demanD.
3.What does the author say about oil trade?
A. It proves profitable to both sides.
B. It improves economic efficiency.
C. It makes for economic prosperity.
D. It saves the cost of oil exploration.
Chimpanzees,long considered reluctant to share,apparently can display selfless tendencies,revealing one more key way our closest living relatives are like humans,scientists find. These findings could shed light on the evolution of altruism in humans.
Previously,a belief was widely held that human altruism evolved only after humans split from their ape cousins about 6 million years ago.In recent years,however,research has revealed just how much chimpanzees have in common with us.They can hunt with spears,play with dolls and mourn their partners'death.
“Most of the earlier studies had presented the apes with a complex implement that helped them deliver food to themselves or others,often so complicated that the experiments tested tool skills rather than social tendencies,”De Waal told Live Science.“Ours is the first study that uses no such implement at all.”
In addition to using complex food-delivery systems,past experiments often placed the chimpanzees so far apart that they might not have realized how their actions benefited others.In these new,simplified experiments,two apes were housed next to each other with a screen through which they could see each other.Then,one chimpanzee had to choose between two differently colored tokens (币) from a bin,one of which represented a pro-social (亲社会的) option,the other a selfish option.The pro-social option would cause both chimpanzees to receive a piece of banana wrapped in paper.The selfish option only rewarded the ape who made the choice.
In a study with seven adult female chimps placed into various pairs,the scientists found all the apes showed a definite preference for the pro-social option.“For me,the most important finding is that like us,chimpanzees take into account the needs and wishes of others,”researcher Victoria Horner,said.
The chimpanzees behaved especially altruistically toward partners who either patiently waited or gently reminded them that they were there by drawing attention to themselves.They were less likely to reward partners who pressured through making a fuss,begging persistently or spitting water at them.This is opposite to a long-standing view that the chimpanzees only share food under pressure.
1.The word“ altruism” (paragraph 1) is closest in meaning to ______.
A. selfishness
B. selflessness
C. willingness
D. reluctance
2.Recent researches are performed with less complicated implements mainly to ______.
A. show that chimps are only good at using implements
B. see whether chimps are willing to share food with others
C. find out if chimps are likely to reward partners
D. test chimps’ social tendencies instead of tool skills
3.Which of the following might be the best title of the passage?
A. Evolution History of Altruism in Humans
B. Similarities between Chimps and Mankind
C. Chimps Do Show Selfless Behavior
D. Chimps Only Share Food under Pressure
阅读下面短文,掌握其大意,从短文后所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。
Many theories regarding the causes of juvenile delinquency(crimes committed by young people)focus either on the individual or on society as the major contributing influence.Theorieson the individual suggest that childrencriminal behavior before they were not sufficientlyfor previous misbehaviors or that they have learned criminal behavior through interaction with others.Theories focusing on the role of society suggest that children commit crimes into their failure to rise above their socioeconomic status or as a rejection of middle-class values.
Most theories of juvenile delinquency have focused on children fromfamilies,the fact that children from wealthy homes also commit crimes.The latter may commit crimes for lack of adequate control from parents.All,however,are uncertain or unimproved and are of course challenged with criticism.
Changes in the social structure may indirectlyjuvenile crime rates.For example,changes in the economy thatto fewer job opportunities for youth and rising unemployment make gainful employment increasingly difficult to obtain.This results inamong youths and may inlead more youths into criminal behavior.
Families have also experiencedthese years.More families consist of one parent households or two working parents;,children are likely to have less supervision at home than was common in the traditional family.This lack of parental supervision is thought to be an influence on juvenile crime rates.Other noticeableof offensive acts includeexperience or failure in school,theavailability of drugs and alcohol,and the growing phenomenon of child abuse and child neglect.All these conditions tend to increase theof a child committing a criminal act,a direct cause and effect relationship has not yet been established.
1.A. centering B. depending C. figuring D. concerning
2.A. refer to B. know about C. engage in D. learn of
3.A. punished B. forgiven C. forgotten D. excused
4.A. return B. contact C. reference D. response
5.A. respected B. cultivated C. disadvantaged D. immigrated
6.A. considering B. ignoring C. highlighting D. believing
7.A. values B. misbehaviors C. criminals D. theories
8.A. affect B. reduce C. prevent D. reflect
9.A. point B. lead C. come D. add
10.A. in general B. on average C. by contrast D. at last
11.A. discomfort B. dissatisfaction C. dishonesty D. discrimination
12.A. case B. short C. turn D. return
13.A. failure B. miseries C. development D. changes
14.A. contrarily B. consequently C. similarly D. occasionally
15.A. education B. concept C. structure D. economy
16.A. suggestions B. causes C. ideas D. reports
17.A. smooth B. favorable C. unfavorable D. practical
18.A. increasing B. restricted C. reasonable D. popular
19.A. knowledge B. aspect C. strength D. probability
20.A. since B. although C. as D. because
---Oh,my God! Daring,what’s wrong with your face?
---Forget it! I am allergic to the cream recommended by my colleague,Ms.Fan,a very well preserved woman.
---Oh,no! I have to say‘________’.
A. A burden of one’s choice is not felt.
B. One man’s meat is another man’s poison.
C. Beauty,unaccompanied by virtue,is as a flower without perfume.
D. Don’t cross the bridge till you get to it.
Not until ________a third time ________that he had given birth to the reading system for the blind called Braille.
A. Louis Braille tried;he announced
B. did Louis Braille try;he announced
C. Louis Braille had tried;did he announce
D. had Louis Braille tried;had he announced
________ much media attention is paid to the topic of raising children or caring for elderly parents in their final years,it seems ________ not much is explained on being a parent.
A. While;that B. As;like
C. Because;that D. Since;/