题目

如图为DNA分子结构示意图，请据图回答下列问题：（1）指出下列各部分的名称：①___________________，②__________________，③______________________，④____________________，⑥____________________，⑦_________________________。（2）若以放射性同位15N标记该DNA，则放射性物质位于______中。（3）若水解该DNA获得其组成单位，则断裂的化学键位于______（基团）之间。（4）DNA是______的携带者，而每个个体DNA的______序列各有特点，决定了生物个体的特异性。  A Nobel Prize is considered by most people one of the highest international honours a person can receive．As you know，the prizes were started by a Swedish called Alfred Nobel．He was born in Stockholm，the capital of Sweden．Alfred Nobel was a great scientist．He made two important inventions，and so he became very rich．Although he was rich，Nobel was not a happy man．He never married or had children．Also，he was a sick man during his large part of life．When he died at the age of 63, he left a fund of$9,000,000．The money was to be used in giving prizes to those who made great achievements in physics，chemistry(化学)，medicine and literature, and for world peace．     The first Nobel Prizes were given on December 10, 1901，five years after Nobel’s death．Since then many famous people from all over the world have been given Nobel Prizes for their achievements．     Each prize has three parts．The first part is a gold medal．Second，a winner of a Nobel Prize is given a diploma, saying that he has been given the prize．The third part of the prize is a large amount of money---about$40,000．     Often a prize is given to just one person，but not always．Sometimes a prize is shared．It may be given to two or more people who have worked together．It is also sometimes true that a prize is not given at all if there is no great achievement．In 1972，for example，no Nobel Peace Prize was given． 31．What kind of person would you say Alfred Nobel was?     A．He was a rich happy and lucky man．     B．He was a poor, unhappy and unlucky man．     C．He was a rich, but unhappy and unlucky man．     D．He was a poor, but happy and lucky man． 32．When he died，Nobel left a large amount of money____________．     A．to his wife                        B．to his children        C．for helping the poor people in Sweden  D．for setting five prizes 33．The underlined word “diploma” in the passage most probably means__________．     A．certificate          B．letter          C．ticket        D．card 34．How many persons is a Noble Prize given to?      A．Not always one person．              B．Two persons．     C．Only one person．                   D．Three persons