题目

A LITTLE PRINCESS by Frances Hodgson Burnett Price: $7.10 （Paperback  Dec. 9, 1998) The novel tells of the story of a wealthy young girl, Sara Crewe, who is sent to a boarding school during her father’s campaign in India. Thanks to Capt. Crewe’s money, Sara is treated as a little princess until, one day, word comes of her father’s tragic death. Miss Minchin, the school’s greedy headmistress, wastes no time in putting the now-penniless Sara to work for her room and board. It is only through the friendship of two other girls and some astonishing luck that Sara eventually finds her way613C－NMR（核磁共振）可以用于含碳化合物的结构分析有关C的说法正确的是                                                 （   ） A．质子数为6    　B．电子数为13 C．中子数为6   　 D．质量数为6