第4部分：阅读理解(第31-45题，每题3分，共45分)下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
31、回答31-36题
　　The United States boasts substantial energy resources. Federal lands provide a good deal ofUS energy production, the U. S. Department of the Interior manages federal energy leasing ( 租赁) both on land and on the offshore Outer Continental Shelf Production from these sourcesamounts to nearly 30 percent of total annual US energy production.
　　In 2000, 32 percent of US oil, 35 percent of natural gas, and 37 percent of coal wereproduced from federal lands, representing 20, 000 producing oil and gas leases and 135producing coal leases. Federal lands are also estimated to contain approximately 68 percent of allundiscovered US oil reserves and 74 percent of undiscovered natural gas.
　　Revenues from federal oil, gas, and coal leasing provide significant returns to UStaxpayers as well as State Government. In 1999, for example, $ 553 million in oil and gasrevenues were paid to the US Treasury, and non-India coal leases accounted for over $ 304million in revenues, of which 50 percent were paid to State governments. Public lands also playa critical role in energy delivery. Each year, federal land managers authorize rights of way fortransmission lines, rail systems, pipelines, and other facilities related to energy production anduse.
　　Alternative energy production from federal lands falls behind conventional energyproduction, though the amount is still significant. For example, federal geothermal (地热)resources produce about 7. 5 billion kilowatt-hours (千瓦时) of electricity per year, 47percent of all electricity generated from US geothermal energy. There are 2, 960 wind turbineson public lands in California alone, producing electricity for about 300, 000 people. Federal hydropower facilities produce about 17 percent of all hydropower produced in the United States.Because of the growing US thirst for energy and increasing public unease with influence onforeign off sources, pressure on public lands to meet US energy demand is becoming moreintense. Public lands are available for energy development only after they have been evaluatedthrough the land use planning process. If development of energy resources conflicts withmanagement or use of other resources, development restrictions or impact moderation measuresmay be enforced, or mineral be banned altogether.

What is the main idea of this passage?
A．Public lands are one of the main sources of revenues.
B．Public lands play an important role in energy production.
C．Public lands should be developed to ease energy shortage.
D．Public lands store huge energy resources for further development.

32、 Which of the following statements is true of public lands in the U. S. ?
A．The majority of undiscovered natural gas is stored there.
B．Half of US energy is produced there.
C．Most of coal was produced from there in 2000.
D．Most energy resources are reserved there.

33、 Geothermal resources, wind turbines, and hydropower facilities in Paragraph 4 cited as examples to illustrate that_______. 
A．the amount of alternative energy production from public lands is huge
B．alternative energy production is no less than conventional energy production
C．they are the most typical conventional energy resources from public lands
D．geothermal resources are more important than the other two

34、There is a mounting pressure on public lands to satisfy US energy demands_______.
A．the U. S. is demanding more and more energy
B．many Americans are unhappy with energy development in foreign countries
C．quite a few public lands are banned for energy development
D．many Americans think public lands are being abused

35、 Public lands can be used for energy development when_______. 
A．energy development restrictions are effective
B．federal land managers grant permissions
C．they go through the land use planning process
D．there is enough federal budget
36、回答36-41题
　　Our senses aren't just delivering a strict view of what's going on in the world; they're affected by what's going on in our heads. A new study finds that hungry people see food-relatedwords more clearly than people who've just eaten.
　　Psychologists have known for decades that what's going on, inside our head affects oursenses. For example, poorer children think coins are larger than they are, and hungry peoplethink pictures of food are brighter. Remi Radel of University of Nice Sophia-Antipolis, France,wanted to investigate how this happens. Does it happen right away as the brain receives signalsfrom the eyes or a little later as the brain's high-level thinking processes get involved?
Radel recruited 42 students with a normal body mass index. On the day of his or her test,each student was told to arrive at the lab at noon after three or four hours of not eating. Thenthey were told there was a delay. Some were told to come back in 10 minutes; others weregiven an hour to get lunch first. So half the students were hungry when they did the experimentand the other half had just eaten.
　　For the experiment, the participant looked at a computer screen. One by one, 80 wordsflashed on the screen for about 1/300th of a second each. They flashed at so small a size that thestudents could only consciously perceive. A quarter of the words were food-related. After eachword, each person was asked how bright the word was and asked to choose which of two wordsthey'd seen -- a food-related word like cake or a neutral word like boat. Each word appearedtoo briefly for the participant to really read it.
　　Hungry people saw the food-reiated words as brighter and were better at identifying food-related words. Because the word appeared too quickly for them to be reliably seen, this meansthat the difference is in perception , not in thinking processes, Radel says.
"This is something great to me. Humans can really perceive what they need or what theystrive for. From the experiment, I know that our brain can really be at the disposal of ourmotives and needs," Radel says.

"Poorer children" and "hungry people" are mentioned in Paragraph 2 to show_______.
A．humans' senses are influenced by what's going on in their heads
B．they have sharper senses than others
C．they lose their senses because of poverty and hunger
D．humans' senses are affected by what they see with their eyes

37、 There was a delay in Radel's experiment because
A．he needed more students to join
B．he didn't prepare enough food for the 42 students
C．he wanted two groups of participants, hungry and non-hungry
D．he didn't want to have the experiment at noon

38、 Why did the 80 words flash so fast and at so small a size on the screen?
A．To ensure the participant was unable to perceive anything.
B．To guarantee each word came out at the same speed and size.
C．To shorten the time of the experiment.
D．To make sure the participant had no time to think consciously.

39、 Radel's experiment discovered that hungry people_______.
A．were more sensitive to food-related words than stomach-full people
B．were better at identifying neutral words
C．were always thinking of food-related words
D．saw every word more clearly than stomach-full people

40、 It can be learnt from what Radel says that_______.
A．humans' thinking processes are independent of their senses
B．an experiment with hungry and non-hungry participants is not reliable
C．humans can perceive what they need without deep thinking processes
D．42 participants are too small a number for a serious investigation
41、回答41-46题
　　Ballet is a dance form that has a long history. The fact that it survives to this day shows that it has adjusted as times have changed.
Ballet began in the royal courts during the Renaissance. At that time it became common forkings and queens, as well as other nobility, to participate in pageants that included music,poetry, and dance. As these entertainments moved from the Italian courts to the French ones,court ladies began participating in them, Though their long dresses prevented much movement,they were able to perform elaborate walking patterns. It was not until the 1600s that womendancers shortened their skirts, changed to flat shoes, and began doing some of the leaps andturns performed by men.
It was also in the 1600s that professional ballet began. King Louis XIV of France, himselfa devoted dancer, founded the Royal Academy of Dance. The five basic feet positions fromwhich all ballet steps begin were finalized. In the late 1700s another important change occurred.Ballet began to tell a story on its own. It was no longer simply dance to be performed betweenacts of plays. Elaborate wigs and costumes were eliminated. By the early 1800s dancers learnedto rise on their toes to make it appear that they were floating.
　　Classical ballet as we know it today was influenced primarily by Russian dancing. TheRussians remained interested in ballet when it declined in other European countries in the mid -1800s. One of the most influential figures of the early 20th century was Sergei Diaghilev. Hisdance company, the Ballets Russes, brought a new energy and excitement to ballet. One of hischief assistants, George Balanchine, went on to found the New York City Ballet in 1948 and toinfluence new generations of dancers.

This passage deals mainly with_______.
A．famous names in ballet
B．Russian ballet
C．how ballet has developed
D．why ballet is no longer popular

42、 The word "pageants" in paragraph 2 means: _______.
A．dances
B．instruction
C．royal courts
D．big shows

43、 Professional ballet was first performed in_______.
A．France
B．Italy
C．Russia
D．America

44、 Who had an important influence on early ballet?
A．Balanchine
B．Louis XIV
C．Antoinette
D．Diaghilev

45、 We can conclude from this passage that ballet_______.
A．will continue to change
B．is a dying art
C．is currently performed only in Russia
D．is often performed by dancers with little training