【正文】 t eye contact B) hide emotions with a deadpan expression C) display excitement or disgust, shock or sadness D) raise their eyebrows,nod and smile politely Passage Four Questions 26 to 30 are based on the following passage. We 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 (宗譜學(xué) ) can use this unique identification provided by the geic markers to link people together into family trees. Pedigrees (家譜 ) based on such geic markers can mean a breakthrough for family trees where information is inplete or missing due to adoption, illegitimacy or lack of records. There are many munities 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 geic makeup, 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 mon markers (in this case we can look primarily at the Y chromosome (染色體 )),” explains Ugo A. Perego, a member of the BYU Molecular Genealogy research team. 26. People in a large area may possess the same DNA thread because . A) DNA is characteristic of a region B) they are beyond doubt of mon ancestry C) DNA strand has the ability to identify individuals D) their unique identification can be provided via DNA 27. The possible research of family trees is based on the fact that . A) geics has achieved a breakthrough B) geic information contained in DNA can be revealed now C) each individual carries a unique record of who he is and how he is related to others D) we can use DNA to prove how distant an individual is to a family, a group or a population 28. The Molecular Genealogy Research Group is building a database for the purpose of . A) offering assistance in working out genealogyrelated problems 中國最大的管理資料下載中心 (收集 \整理 . 部分版權(quán)歸原作者所有 ) 第 7 頁 共 32 頁 B) solving many issues without relying on traditional written records C) providing a pedigree chart of at least four generations in the world D) confirming the assumption that all individuals are of the same origin 29. If two men suspected for some reason they have a mon ancestor, . A) we can decide according to their family tree B) we can find the truth from their geic markers C) we can pare the differences in their Y chromosome D) we can look for written records to prove their relationship 30. Which of the following CANNOT be inferred from the passage? A) We are a walking,living,breathing record of our ancestors B) Many American slaves did not know who their ancestors were. C) An adopted child generally lacks enough information to prove his identity. D) Molecular genealogy can be used to prove a relationship between individuals. Part Ⅲ Vocabulary(20 minutes) Directions: There are 30 inplete sentences in this part. For each sentence there are four choices marked A),B),C)and D). Choose the ONE answer that best pletes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the centre. 31. WTO is regarded by some countries as an access to foreign markets rather than as a for opening up the home market. A) merce B) mittee C) mitment D) mission 32. We should recognize that every pany and every person is part of a long of customers and suppliers. A) pool B) line C) stream D) chain 33. Today the small town is better against flood than it was 20 years ago. A) protected B) prevented C) preserved D) prepared 34. Did you mean I should keep the receipt? I A) run it over B) torn it up C) taken it apart D) shaken it off 35. Unlike photocopies of books, the digital copies are virtually in quality to the original. A) similar B) identical C) resembling D) alike 36. The price of fresh vegetables according to the weather. A) fluctuates B) increases C) soars D) maintains 37. Your proposal looks good ,but I am not convinced it can be put into effect. A) on paper B) at sight C) under cover D) in bulk 38. The government that refuses to meet the needs of its people must bear the . A) results B) outes C) effects D) consequences 中國最大的管理資料下載中心 (收集 \整理 . 部分版權(quán)歸原作者所有 ) 第 8 頁 共 32 頁 39. The elderly people in this country are entitled to a special heating allowance from the government when they pass the age of sixty. A) claim B) declare C) inquire D) apply 40. The snow has been steadily for hours and the ground is pletely covered. A) showering B) dropping C) descending D) falling 41. The hostess went to great to make the child fortable and feel at home. A) efforts B) lengths C) heights D) details 42. You said the post office is on this block, can you be a bit more ? A) particul