叶绿体能将阳光中的_________转变为储存在有机物中的____________。
光能 化学能
下列实验方案不合理的是 [ ]
A.鉴定蔗糖水解产物中有葡萄糖:直接在水解液中加入新制Cu(OH)2
B.鉴别织物成分是真丝还是人造丝:用灼烧的方法
C.鉴定苯中无碳碳双键:加入高锰酸钾酸性溶液
D.鉴别乙烯和苯:将溴的四氯化碳溶液分别滴加到少量乙烯和苯中
Shundagarh is a village on India’s east-facing coast. The Khadra Hills rise immediately behind the village, to a height of one hundred and fifty meters. A simple, good-hearted old man, whose name was Jalpur, farmed two small fields on the very edge of those hills. From his fields he could see everything up and down the coast. If the weather was kind and the harvest was good, Jalpur could live happily enough — not well, but happily. When there was little or no rain, then he came close to the line between a life which was too hard and death itself. Last year the weather had been so kind and the harvest promised to be so good, that Jalpur had been wondering whether he could sell all that he had and live with his son farther up the coast. He had been thinking about doing this for some years. It was his dearest wish to spend his last days with his son and his family. But he would go only if he could give; he would not go if it meant taking food out of the mouth of his grandchildren. He would rather die hungry than do this. On the day on which Jalpur decided that he would harvest his corn, he looked out to sea and saw a huge wave, several kilometers out, advancing towards the coast and the village of Shundagarh. Within ten minutes everyone in Shundagarh would be drowned. Jalpur would have shouted, but the people were too far away to hear. He would have run down the hill, but he was too old to run. He was preparing to do anything to save the people of Shundagarh, so he did the only thing that he could do. He set fire to his corn. Immediately smoke was rising high. Within a minute the people of Shundagarh were running up the hill to see what had happened. There, in the middle of his blackened corn-field, they found Jalpur; and there they buried him. On his grave, they wrote the words: Here lies Jalpur, a man who gave, living; a man who died, giving.
What does the words "a man who gave, living; a man who died, giving" mean [A] He gave his life for the lives of the whole village. [B] He is an unselfish man. [C] He thought more of others than of himself. [D] All of the above.