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用水蒸气作为乙苯脱氢反应的稀释剂具有哪些优点？

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A)featB）eloquentlyC) slackD) processE) profoundF) attainG) accomplishmentsH) persuasiveI) misfortuneJ）dedicationK）glamorL）containM）misfortuneN) alleviateO)consistentlySuccess means different things for different people. Some may equate (等同) it with fame, some with wealth and still some with1.. For me, it means fulfilling one’s dreams. Whatever your dreams are, you have a goal there and then focus all your attention on it. Dreams bring you hope and happiness. In the2.of struggling for it, you cry, sweat, complain or even curse, but the 3.of harvesting makes you forget all the pains and troubles you have gone through. So an old proverb says that the greatest4.is one that has undergone the bitterest 5.There are several keys to success. First, your goal must be practical. If you set your goal too high, chances are that you will never 6.it. Next, you have to make a plan of doing it. You can take some steps to realize it. Since the process is quite tough, you need to be7.diligent, patient and determined even when you are tired and want to8.or the odds seem too large. Maintain the strong will to keep going. You can always tell yourself that where there’s a will, there’s a way. With hard work,9.and determination, you can triumph over the overwhelming failures and10.difficulties.

英译汉Many artists, statesmen, writers and inventors have had the same experience. They achieved prosperity because they possessed a fierce will to keep preparing and working and a passion to succeed. They attained success, not because it was easy, but because they had the will to overcome profound obstacles and to work diligently in the pursuit of their goals.

青年创业（young entrepreneurship）是未来国家经済活力的来源。创业者的成功不但会创造财富、增加就业机会、改善大家的生活，从长远来看，对于国家更是一件好事。创业者正是让中国经济升级换代的力量。尤其是在当前，国家鼓励大众创业、万众创新。在政策上给予中小企业支持，这更加激发了年轻人的创业热情。

ContentResolver的（）方法实现了将数据发生变化的消息发送至“消息中心”。

A. insert()
B. update()
C. notifyChange()
D. delete()