题目

17、从没有经过饥饿处理的植物的同一叶片上陆续取下面积、厚薄相同的叶圆片，称其干重。假定在整个实验过程中温度不变，叶片内有机物不向其他部位转移。以下分析正确的是 A．三个叶圆片的质量大小关系一定是z＞x＞y B．叶圆片Z在后2小时内的有机物制造量为(z+x-2y)g C．叶圆片Z在4小时内的有机物积累量为(z-x-2y)g D．整个实验过程中呼吸速率可表示为(x-y)g/4hThe history of the Games Olympia Olympia, the site of the ancient Olympic Games, is in the western part of the Peloponnese which, according to Greek mythology, is the island of "Pelops", the founder of the Olympic Games. Imposing temples, votive buildings, elaborate shrines and ancient sporting facilities(设备) were combined in a site of unique natural and mystical beauty. Olympia functioned as a meeting place for worship and other religious and political practices as early as the 10th century B.C. The central part of Olympia was dominated by the majestic temple of Zeus, with the temple of Hera parallel to it. The ancient stadium in Olympia could hold more than 40,000 audience, while in the surrounding area there were auxiliary(辅助的) buildings which developed gradually up until the 4th century B.C. and were used as training sites for the athletes or to house the judges of the Games.The Games and religion The Olympic Games were closely linked to the religious festivals of the cult of Zeus, but were not a total part of a rite. Indeed, they had a secular character and aimed to show the physical qualities and development of the performances accomplished by young people, as well as encouraging good relations between the cities of Greece. According to specialists, the Olympic Games owed their purity and importance to religion.Victory ceremonies The Olympic victor received his first awards immediately after the competition. Following the announcement of the winner's name by the herald, a Hellanodikis (Greek judge) would place a palm branch in his hands, while the audience cheered and threw flowers to him. Red ribbons were tied on his head and hands as a mark of victory.The official award ceremony would take place on the last day of the Games, at the elevated vestibule of the temple of Zeus. In a loud voice, the herald would announce the name of the Olympic winner, his father's name, and his homeland. Then, the Hellanodikis placed the sacred olive tree wreath（花环）, or kotinos, on the winner's head.1.When did Olympia become the site of the Olympic Games? A.In the 10th centuryB.B. Before the 4th century B.C. C. After the 4th century B.C.C.It was not mentioned here.2.Which one is TRUE according to the passage?A.Zeus is the founder of the Olympic Games.B.The ancient stadium in Olympic were used as training sites for the athletes in the 10th century.C.The Olympic Games have much to do with the religion.D.The Olympic victor would receive a golden medal.3.Can you guess the meaning of this word “herald” in the passage?A.the authorB.the headmasterC.the announcerD.the manager4.When the athletes won the game, ______.A.They were awarded immediately after the competition.B.They were awarded twice. The first, immediately after the competition; the second, on the last day of the game.C.They were awarded on the last day of the game.D.They were awarded on the last day of the game or immediately after the competition.