设有学生实体Students(学号,姓名,性别,年龄,家庭住址,家庭成员,关系,联系电话),其中“家庭住址”记录了邮编、省、市、街道信息;“家庭成员,关系,联系,电话”分别记录了学生亲属的姓名、与学生的关系以及联系电话。学生实体Students中的“家庭住址”是一个(52)属性;为使数据库模式设计更合理,对于关系模式Students(53)。 (53)处填()。
A. 可以不作任何处理,因为该关系模式达到了3NF
B. 只允许记录一个亲属的姓名、与学生的关系以及联系电话的信息
C. 需要对关系模式Students增加若干组家庭成员、关系及联系电话字段
D. 应该将家庭成员、关系及联系电话加上学生号,设计成为一个独立的实体
查看答案
Questions 63 t0 67 are based on the following passage: The Last Supper is a late 15th-century mural painting by Leonardo da Vinci in the refectory of the Convent of Santa Maria della Grazie, Milan. The work is presumed to have been commenced around 1495 and was commissioned as part of a scheme of renovations to the church and its convent buildings by Leonardo’s patron Ludovico Sforza, Duke of Milan. The painting represents the scene of The Last Supper of Jesus with his disciples, as it is told in the Gospel of John. Leonardo has depicted the consternation that occurred among the Twelve Disciples when Jesus announced that one of them would betray him. The Last Supper measures 460cm x880cm and covers an end wall of the dining hall at the monastery of Santa Maria delle Grazie in Milan, Italy. The theme was a traditional one for refectories, although the room was not a refectory at the time that Leonardo painted it. The main church building had only recently been completed (in 1498), but was remodeled by Bramante, hired by Ludovico Sforza to build a Sforza family mausoleum. The painting was commissioned by Sforza to be the centerpiece of the mausoleum. The lunettes above the main painting, formed by the triple arched ceiling of the refectory, are painted with Sforza coats-of-arms. The opposite wall of the refectory is covered by the Crucifixionfresco by Giovanni Donato da Montorfano, to which Leonardo added figures of the Sforza family in tempera. Leonardo began work on The Last Supper in 1495 and completed it in 1498-he did not work on the painting continuously. The beginning date is not certain; as the archives of the convent for the period have been destroyed and a document dated 1497 indicates that the painting was nearly completed at that date. One story goes that a prior from the monastery complained to Leonardo about the delay, enraging him. He wrote to the head of the monastery, explaining he had been struggling to find the perfect villainous face for Judas, and that if he could not find a face corresponding with what he had in mind, he would use the features of the prior who complained. In common with other depictions of The Last Supper from this period. Leonardo seats the diners on one side of the table, so that none of them have their backs to the viewer. Most previous depictions excluded Judas by placing him alone on the opposite side of the table from the other eleven disciples and Jesus or placing halos around all the disciples except Judas. Leonardo instead has Judas lean back into shadow. Jesus is predicting that his betrayer will take the bread at the same time he does to Saints Thomas and James to his left, who react in horror as Jesus points with his left hand to a piece of bread before them. Distracted by the conversation between John and Peter, Judas reaches for a different piece of bread not noticing Jesus too stretching out with his right hand towards it. The angles and lighting draw attention to Jesus, whose head is located at the vanishing point for all perspective lines. The painting contains several references to the number 3, which represents the Christian belief in the Holy Trinity. The Apostles are seated in groupings of three; there are three windows behind Jesus; and the shape of Jesus’ figure resembles a triangle. There may have been other references that have since been lost as the painting deteriorated. Leonardo began work on The Last Supper in 1495 and completed it in().
A. 1496
B. 1497
C. 1498
D. 1499
Questions 58 to 62 are based on the following passage: In the past century Irish painting has changes from a British-influenced lyrical tradition to an art that evokes the ruggedness (朴实) and roots of an Irish Celtic past. At the turn of the twentieth century Irish painters, including notables Walter Frederick Osborne and Sir William Orpen, looked elsewhere for influence. Osborne’s exposure to ’plain air’ painting deeply impacted his stylistic development; and Orpen allied himself with a group of English artists, while at the same time participated in the French avant-garde experiment, both as painter and teacher. However, nationalist energies were beginning to coalesce (接合 ), reviving interest in Irish culture-including Irish visual arts. Beatrice Elvery’s (1907), a landmark achievement, merged the devotional simplicity of fifteenth-century Italian painting with the iconography (图像学) of Ireland’s Celtic past, linking the history of Irish Catholicism with the still-nascent (初生的 )Irish republic. And, although also captivated by the French plain air school. Sir John Lavery invoked the mythology of his native land for a 1928 commission to paint the central figure for the bank note of the new Irish Free State. Lavery chose as this figure, with her arm on a Celtic harp (竖琴), the national symbol of independent Ireland. In Irish painting from about 1910, memories of Edwardian romanticism coexisted with a new sense of realism, exemplified by the paintings of Paul Henry and Se Keating, a student of Orpen’s. Realism also crept into the work of Edwardians Lavery and Orpen, both of whom made paintings depicting World War I, Lavery with a distanced Victorian nobility, Orpen closer to the front, revealing a more sinister and realistic vision. Meanwhile, counterpoint ( 对照 ) to the Edwardians and realists came Jack B. Yeats, whose travels throughout the rugged and more authentically Irish West led him to depict subjects ranging from street scenes in Dublin to boxing matches and funerals. Fusing close observations of Irish life and icons with an Irish identity in a new way, Yeats changed the face of Irish painting and became the most important Irish artist of his century. Which of the following art most probably exerted the greatest influence on Irish painting in the 19th century()
A. British lyrical tradition
B. French avant-garde experiment
C. nationalist energies
D. Italian painting
公钥体系中,私钥用于 (66) ,公钥用于 (67)。 (66)处填()。
A. 解密和签名
B. 加密和签名
C. 解密和认证
D. 加密和认证
Questions 58 to 62 are based on the following passage: In the past century Irish painting has changes from a British-influenced lyrical tradition to an art that evokes the ruggedness (朴实) and roots of an Irish Celtic past. At the turn of the twentieth century Irish painters, including notables Walter Frederick Osborne and Sir William Orpen, looked elsewhere for influence. Osborne’s exposure to ’plain air’ painting deeply impacted his stylistic development; and Orpen allied himself with a group of English artists, while at the same time participated in the French avant-garde experiment, both as painter and teacher. However, nationalist energies were beginning to coalesce (接合 ), reviving interest in Irish culture-including Irish visual arts. Beatrice Elvery’s (1907), a landmark achievement, merged the devotional simplicity of fifteenth-century Italian painting with the iconography (图像学) of Ireland’s Celtic past, linking the history of Irish Catholicism with the still-nascent (初生的 )Irish republic. And, although also captivated by the French plain air school. Sir John Lavery invoked the mythology of his native land for a 1928 commission to paint the central figure for the bank note of the new Irish Free State. Lavery chose as this figure, with her arm on a Celtic harp (竖琴), the national symbol of independent Ireland. In Irish painting from about 1910, memories of Edwardian romanticism coexisted with a new sense of realism, exemplified by the paintings of Paul Henry and Se Keating, a student of Orpen’s. Realism also crept into the work of Edwardians Lavery and Orpen, both of whom made paintings depicting World War I, Lavery with a distanced Victorian nobility, Orpen closer to the front, revealing a more sinister and realistic vision. Meanwhile, counterpoint ( 对照 ) to the Edwardians and realists came Jack B. Yeats, whose travels throughout the rugged and more authentically Irish West led him to depict subjects ranging from street scenes in Dublin to boxing matches and funerals. Fusing close observations of Irish life and icons with an Irish identity in a new way, Yeats changed the face of Irish painting and became the most important Irish artist of his century. The author points out the coexistence of romanticism and realism most probably in order to show that()
A. Irish painters of the early twentieth century tended to romanticize the harsh reality of war
B. for a time painters from each school influenced painters from the other school
C. Yeats was influenced by both the romantic and realist schools of Irish painting
D. the transition in Irish painting from one predominant style to the other was not an abrupt one