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有A、B、C、D、E五种元素,A元素形成的﹣2价阴离子比氦的核外电子数多8个.B元素的一种氧化物为淡黄色固体,该固体遇到CO2能生成A的单质.C为原子核内有12个中子的二价金属,当2.4g C与足量盐酸反应时,生成标准状况下的H2 2.24L.D的原子M层上有7个电子,E与A同周期且最外层比次外层多3个电子.回答下列问题.
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       An old man was dying. One by one his relatives visited him. Even relatives and friends he hadn't seen for years  1  him to say farewell. They all2their deep love for him. 3   each came to him, the old man held each person by their  4 and spoke to each. To one he said, “Yes, I love you.” To  5  he said, “I go without any ill will.” To a third one he said, “Peace be with you.”

        And so to each person he said such 6  words. Then the old man7Nasrudin (a wise man in the Middle East). When Nasrudin came in, he stood on one side,  8  everyone and listened to what they said and what the dying man said to them. After a while, Nasrudin 9  his hands in the air, and when everyone 10 to hear him, Nasrudin said , “Fools! Why didn't you visit him in his good  11? You didn't love him when he was healthy, but you love him when he is dying!”

      After that, Nasrudin turned to the  12  man and shouted, “Fool! Why didn't you live with such nice feelings all the days when you were13 and fully alive?” With that, Nasrudin left the  14. The old man 15  and said, “At last I’ve heard the   16 . It is a blessing to 17  having heard the truth.” The old man died  18 .

       What about the others? They returned to their  19   business of life and continued as they always had been. And Nasrudin? When he returned to his 20 just outside the old man's house, the donkey made a long high sound, “Hee-haw! Hee-haw!” Nasrudin said, “Yes, I know... You're right... Live well; die well...”