3. Passage Thirty-ThreeWe all know that DNA has the ability to identify individuals but， because it is inherited， there are also regions of the DNA strand which can relate an individual to his or her family (immediate and extended)， tribal group and even an entire population.Molecular Genealogy (宗谱学)can use this unique identification provided by the genetic markers to link people together into family trees.Pedigrees (家谱)based on such genetic markers can mean a breakthrough for family trees where information is incomplete or missing due to adoption， illegitimacy or lack of records.There are many communities and populations which have lost precious records due to tragic events such as the fire in the Irish courts during Civil War in 1921 or American slaves for whom many records were never kept in the first place.The main objective of the Molecular Genealogy Research Group is to build a database containing over 100，000 DNA samples from individuals all over the world.These individuals will have provided a pedigree chart of at least four generations and a small blood sample.Once the database has enough samples to represent the world genetic make-up， it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records.Theoretically， any individual will someday be able to trace his or her family origins through this database.In the meantime， as the database is being created， molecular genealogy can already verify possible or suspected relationships between individuals.“For example， if two men sharing the same last name believe that they are related， but no written record proves this relationship， we can verify this possibility by collecting a sample of DNA from both and looking for common markers (in this case we can look primarily at the Y chromosome (染色体)，” explains Ugo Perego， a member of the BYU Molecular Genealogy research team.The Molecular Genealogy Research Group is building a database for the purpose of ().

46.Ann never dreams of ()for her to be sent abroad very soon.

A. 　there being a chance

B. 　there to be a chance

C. 　there be a chance

D. 　being a chance

4.The price of beer ()from 50 cents to $ 4 per liter during the summer season.

A. 　altered

B. 　ranged

C. 　separated

D. 　differed

4. Passage Thirty-TwoHave you ever heard of a pawpaw (木瓜)? If not， do not feel bad.Many Americans do not know of the fruit， although it is native to the U.S.Once， however， it was one of the most popular fruits in North America.Happily， those who love the pawpaw are trying to return it to its former position in American foods.A pawpaw is a tropical fruit that used to be grown along the East Coast from New York to Florida and all over the eastern U.S.At one time， it could be found as far west as Nebraska.The pawpaw was an important food for Native Americans and even early European settlers.Pawpaws reportedly were a favorite treat of George Washington， the first U.S.president， who especially liked them cold.Thomas Jefferson， the third U.S.president， was also a fan of the fruit.He planted pawpaws at his home in Virginia.He also sent pawpaw seeds to his friends in France.American explorers Lewis and Clark wrote in their journals about the pawpaw.The pawpaw is difficult to be sold commercially.The fruit requires a very special environment—low， wet areas that sometimes flood.It has a very short harvest season， from two to three weeks in September and October.In addition， the fruit is good to eat for only two to three days after harvesting.This makes it hard to sell anywhere distant from the pawpaw tree it comes from.Planters are again growing pawpaw trees and harvesting the fruit.In several states farmers have organized “pawpaw festivals” to reintroduce people to food.At such a festival in Maryland recently， farmers displayed different products made with pawpaws， like pawpaw jams， pies， ice-cream and beer.It is difficult to sell the pawpaw on a large scale for the following reasons EXCEPT that the fruit ().

45.They consider ()the budget should be adjusted each time it is implemented.

A. 　it necessary that

B. 　that it necessary

C. 　necessary that

D. 　necessary of it that

4、If the earth were spinning just like a rubber ball， there would only be day and night on earth， but no seasons， and days would always be the same length as nights --- 12 hours each.But this is not how the earth spins.It spins with its axis tilted(倾斜).Its axis is always at the angle(角度)to the plane of its orbit(地球的轨道平面)--- an angle of about 231/2 degrees.It is this tilting that accounts for(说明，解释清楚)our four seasons and the lengthening and shortening of days and nights.For this reason also， the Equator(赤道)(an imaginary line (一条想象出来的线)drawn around the earth at equal distance from the two poles)is not always directly under the sun’s rays.For six months the earth is tilted towards the sun， and the Northern Hemisphere(北半球)gets more than its share(份量)of sunlight every day.Days are longer than nights， and what is more， the sun’s rays come down more perpendicularly(垂直地，直射地)instead of slanting down(斜射).

37. Questions 36 to 40 are based on the following passage.Recognizing when a friend or colleague feels sad， angry or surprised is key to getting along with others.But a new study suggests that being sensitive to people’s feelings may sometimes come with an extra dose of stress.This and other research challenge the prevailing view that emotional intelligence is uniformly beneficial to its bearer.In a study， Psychologist Myriam Bechtoldt of the Frankfurt School of Finance and Management in Germany asked 166 male university students a series of question to measure their emotional intelligence.For example， they showed the students photographs of people’s faces and ask them to what extent feelings such as happiness or disgust were being expressed.The students then had to give job talks in front of judges who displayed serious facial expressions.The scientists measured concentrations of stress hormones in the students’ saliva (唾液)before and after the talk.In students who were rated more emotionally intelligent， the stress measures increased more during the experiment and took longer to go back to baseline.The findings suggest that some people may be too emotionally clever for their own good， says Bechtoldt.“Sometimes you can be so good at something that it causes trouble，” she notes.Indeed， the study adds to previous research hinting at a dark side of emotional intelligence.A study published in 2002 in Personality and Individual Differences suggested that emotionally perceptive people might be particularly influenced by feelings of depression and hopelessness.Furthermore， several studies have implied that emotional intelligence can be used to manipulate others for personal gains.
More research is needed to see how exactly the relation between emotional intelligence and stress would play out in women and in people of different ages and education levels.Nevertheless， emotional intelligence is a useful skill to have， as long as you learn to also properly cope with emotions—both others’ and your own， says Bechtoldt.For example， some sensitive individuals may assume responsibility for other people’s sadness or anger， which ultimately stresses them out.Remember， as Bechtoldt says， “you are not responsible for how other people feel.”What was the purpose of psychologist Myriam Bechtoldt’s experiment?

A. 　To define different types of human feelings.

B. 　To assess the impacts of being emotionally clever.

C. 　To demonstrate how to distinguish different feelings.

D. 　To identify gender differences in emotional intelligence.

2.As Commander-in-Chief of the armed forces， I have directed that all measures ()for our defense.

A. 　had been taken

B. 　would be taken

C. 　be taken

D. 　to be taken

32.Had he worked harder， he ()the exams.

A. 　must have got through

B. 　would have got through

C. 　permitted are freshmen

D. 　are permitted freshmen

2. Passage SeventeenNo one knows how man learned to make words.Perhaps he began by making sounds like those made by animals.Perhaps he grunted like a pig when he lifted something heavy.Perhaps he made sounds like those he heard all round him——water splashing， bees humming， a stone falling to the ground.Somehow， he learned to make words.As the centuries went by， he made more and more new words.This is what we mean by language.People living in different countries made different kinds of words.Today there are about fifteen hundred different languages in the world.Each contains many thousands of words.A very large English dictionary， for example， contains four or five hundred thousand words.But we do not need all these.Only a few thousand words are used in everyday life.The words you know are called your vocabulary.You should try to make your vocabulary bigger.You’re supposed to read as many books as you can.There are plenty of books written in easy English for you to read.You will enjoy them.When you meet a new word， you should find it in your dictionary.Your dictionary is your most useful book.The number of different languages spoken is about ().

10.Those gifts of rare books that were given to us were deeply().

A. 　appreciated

B. 　approved

C. 　appealed

D. 　applied