1921年8月，23岁的美国青年阿曼得·哈默来到了莫斯科，并于10月28日获得了一所石棉矿的特许经营权，他能获此特权得益于苏俄的(     )

设{a_n}为单调递增数列，首项a₁=4，且满足a_n+1²+a_n²+16=8（a_n+1+a_n）+2a_n+1•a_n，n∈N^*，则a₁﹣a₂+a₃﹣a₄+…+a_2n﹣1﹣a_2n=（  ）

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    In recent years advances in medical technology have made it possible for people to live longer than in the past. New medicines and machines are developing every day to extend life. However, some people, including some doctors, don't agree with these life extending measures, and they say that people should have the right(权利)t o die when they want, They say that the quality of life is as important as life itself, and that people should not be forced to go on living when conditions of life have become unbearable. They say that people should be allowed to die with dignity(尊严) and to decide when they want to die. Others don't agree and say that life under any conditions is better than death and that the duty of doctors is always to extend life as long as possible. And so the quarrel goes on and on without a definite(明确的) answer.

短文填空
    Two weeks after the conclusion of the hit show Chinese Poetry Competition, a new program, Readers, has become a nationwide stir. ____(broadcast) on CCTV over the weekend, it is arousing fresh ____(enthusiastic) for literature in China.
    The weekly talk show, produced and hosted by famous TV personality Dong Qing, ____(invite) people from all walks of life ____(read) aloud parts of poems, essays and books that they like or wrote. The participants also share stories from their own life explaining ____particular pieces touched their hearts or shaped their lives.
    Five days after____(it) first show on CCTV-1 on Saturday, Readers has been rated 9.2 points out of 10 on Douban, one of China's most popular review sites. Internet ____(use) have praised it as a breath of fresh air among variety shows in China, a refreshing change from the usual dance and singing shows that dominate live television.
    But the success of these programs is just like a vane, through which we can see that there is ____huge demand of cultural show in the public. In today's television world ____reality shows have dominated, this is very____encourage).