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三、单词拼写 1. The young man stole into the flat with the i________ of getting some food. 2. After a week of confusion, the order of the town began to return to n________. 3. After the long holiday, his professional life was surprisingly t . 4. Almost everyone has p________ from this great invention of Edison’s. 5. Two hundred people lost their homes as a direct c of the storm. 6. As the old saying goes, failure is the mother of s________. 7. With everything p________ in place, the chairman announced the opening of the meeting. 8. I can feel people’s a for the war to end. 9. There’s been a major b in cancer research since the beginning of this century. 10. Being a c________ driver, he never takes any risks. 11. The key to ________ ( 限制 ) air pollution is strict regulation on private cars. 12. The m of the websites are accessible free of charge. 13. With more and more goods to deliver, it seems necessary to buy in more lorries to m______ the needs. 14. Thousands of children were a by foreign families after the war. 15. We should never toy with the customers only for economic p . 16. GM food is claimed to be of m________ benefit to man: you don’t need to take medicine any more. 17. The a________ of computer science has greatly changed people’s way of communication. 18. No one is to leave the building without my p . 19. Nothing can explain your failure in the test but c________. Be careful next time. 20. From his f look, I guess he must have found something horrible. 21. His poor i can hardly feed the huge family. 22. The result must be a . Not a single mistake will be forgiven. 23. The manager thought she was r so that he told her every detail of his plan. 24. A scientific diet provides balanced n for your body. 25. The school has decided to hold a sports festival and the a_______ will be made on the school radio. 26. The m of the officials are in favor of the plan while there are still a small number of them who are against it. 27. One should never allow himself to be l to what he already has or what he can already do. 28. Though he spent his childhood on the farm, he knew nothing about a . 29. T has developed into the pillar industry ( 支柱产业 ) of this city in recent years, attracting thousands of visitors all year round and a huge yearly profit of about $200 million. 30. There’s no such p as can please every single job applicant in salary and work satisfaction. 31. By means of meditation ( 冥想 ) one can probably reduce his a that he suffers from tough work. 32. He lacks sound j , which means he doesn’t exactly know what is right or wrong. 33. I believe her design is o_________ because it is completely different from anyone else’s. 34. This book is intended to give a _______( 简要的 ) introduction to the development of the Internet. 35. I find it difficult to c________ a survey on people’s political views.
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【简答题】下列反常积分中发散的是 ( A ) ( B ) ( C ) ( D )
【单选题】正态分布N(μ,σ2),当μ恒定时,σ越大
A.
曲线沿横轴越向左移动
B.
观察值变异程度越小,曲线越“瘦”
C.
观察值变异程度越大,曲线越“胖”
D.
曲线沿横轴越向右移动
【判断题】当总体服从正态分布N(μ,σ 2 )时,来自该总体的所有容量为n的样本均值 服从正态分布 N(μ,σ/2)
A.
正确
B.
错误
【单选题】我国在哪一年取消了农业税?
A.
2006年
B.
2016年
C.
2005年
D.
2015年
【单选题】正态分布 N( μ,σ 2) ,当 μ恒定时,σ 2 越大
A.
曲线沿横轴越向左移动
B.
曲线沿横轴越向右移动
C.
观察值变异程度越大,曲线越“胖”
D.
观察值变异程度越小,曲线越“瘦”
E.
曲线形状和位置不变
【单选题】当总体X服从正态分布N(μ,σ 2 )时,根据(    )知道,样本均值也服从正态分布。
A.
中心极限定理    
B.
正态分布的性质
C.
抽样分布    
D.
统计推断
【单选题】正态分布N(μ,σ 2 ),当μ恒定时,σ越大则
A.
曲线沿横轴越向左移动
B.
曲线沿横轴越向右移动
C.
曲线越瘦高
D.
曲线越矮胖
E.
曲线形状和位置不变
【单选题】我国在哪一年正式取消了农业税?
A.
2004
B.
2005
C.
2006
D.
2007
【单选题】正态分布N(μ,σ2),当μ 恒定时,σ 越小
A.
观察值变异程度越大,曲线越“胖”
B.
观察值变异程度越小,曲线越“瘦”
C.
曲线沿横轴越向左移动
D.
曲线沿横轴越向右移动
【单选题】为了加强“三农”工作,党和政府制定了“多予、少取、放活”的重要方针。我国在哪一年取消了农业税及附加?( )
A.
2004
B.
2005
C.
2003
D.
2006
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