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【简答题】
VII. Rewrite the underlined parts in the following sentences, using the of + (adjective +) noun structure without changing the original meaning. 1. This newly published English dictionary is useful to college students. 2. The commander’s decision at the critical moment was very important , and the outcome might mean the difference between life and death. 3. This part of the president’s speech at the conference seems to be exceedingly significant . It has been printed in many of today’s newspapers. 4. Quite a few 18 th century philosophers are out of place in our times. Some of their ideas are not very valuable in the modern world. 5. Historically, the concept of freedom is one that has been markedly beneficial to the people of the Western world. 6. Steinberg claims that the early years of his participation in various musical performances were invaluably helpful to his career.
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【简答题】设M为部分组成的集合,数列{a n }的首项a 1 =1,前n项的和为S n ,已知对任意的整数k∈M,当整数n>k时,S n+k +S n-k =2(S n +S k )都成立, (1)设M={1},a 2 =2,求a 5 的值; (2)设M={3,4},求数列{a n }的通项公式.
【简答题】设等比数列 前n项和为 ,且对任意n,都有
【简答题】数列 的前n项和为 ,存在常数A,B,C,使得 对任意n都成立. ⑴若数列 为等差数列,求证:3A B+C=0; ⑵若 设 数列 的前n项和为 ,求 ; ⑶若C=0, 是首项为1的等差数列,设 数列 的前2014项和为P,求不超过P的最大整数的值.
【单选题】肝性脑病病人应给予
A.
高蛋白饮食
B.
低蛋白饮食
C.
高热量饮食
D.
无盐低钠饮食
E.
少渣饮食
【简答题】设数列 的前n项和为 ,且 对任意n都成立,其中 为常数,且 ,(1)求证: 是等比数列;(2)设数列 的公比 ,数列 满足: ,求数列 的前 项和 。
【判断题】98% 的人体都有六个元素组成:氧、氮、碳、氢、钙和亚磷物质 。
A.
正确
B.
错误
【判断题】男性商务人员可以穿厚底皮鞋、高跟皮鞋、坡跟皮鞋或高帮皮鞋配西装。
A.
正确
B.
错误
【单选题】肝性脑病病人应给予
A.
低盐饮食
B.
低蛋白饮食
C.
高热量饮食
D.
无盐低钠饮食
【单选题】设数列{(-1) n }的前n项和为S n ,则对任意正整数n,S n = [     ]
A.
B.
C.
【简答题】(本小题满分12分) 设数列 对任意n都成立,m为大于—1的非零常数。 (1)求证 是等比数列; (2设数列 求证:
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