从205里减去220的14,差是多少?

题型:解答题

问题:

从205里减去220的
1
4
,差是多少?
考点:分数的简便算法
题型:解答题
已知数列{an},an≥0,a1=0,an+12+an+1-1=an2(n∈N).记Sn=a1+a2+…+anTn=
1
1+a1
+
1
(1+a1)(1+a2)
+…+
1
(1+a1)(1+a2)…(1+an)

求证:当n∈N时,
(Ⅰ)an<an+1
(Ⅱ)Sn>n-2.
题型:解答题

导致保险诚信缺失的主要原因有():①社会信用基础薄弱;②保险信用法规建设滞后;③保险公司经营管理体制落后;④保险营销机制不完善。

A.①②④

B.①②③

C.②③④

D.①②③④

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Parents and kids today dress alike, listen to the same music, and are friends. Is this a good thing? Sometimes, when Mr. Ballmer and his 16-year-old daughter, Elizabeth, listen to rock music together and talk about interests both enjoy, such as pop culture, he remembers his more distant relationship with his parents when he was a teenager.

“I would never have said to my mom, ‘Hey, the new Weezer album is really great. How do you like it?’” says Ballmer. “There was just a complete gap in taste.”

Music was not the only gulf. From clothing and hairstyles to activities and expectations, earlier generations of parents and children often appeared to move in separate orbits.

Today, the generation gap has not disappeared, but it is getting narrow in many families. Conversations on subjects such as sex and drugs would not have taken place a generation ago. Now they are comfortable and common. And parent—child activities, from shopping to sports, involve a feeling of trust and friendship that can continue int0 adulthood.

No wonder greeting cards today carry the message, “To my mother, my best friend.”

But family experts warn that the new equality can also result in less respect for parents. “There’s still a lot of strictness and authority on the part of parents out there, but there is a change happening,” says Kerrie, a psychology professor at Lebanon Valley College. “In the middle of that change, there is a lot of confusion among parents.”

Family researchers offer a variety of reasons for these evolving roles and attitudes. They see the 1960s as a turning point. Great cultural changes led to more open communication and a more democratic process that encourages everyone to have a say.

“My parents were on the ‘before’ side of that change, but today’s parents, the 40-year-olds, were on the  ‘after’ side,” explains Mr. Ballmer. “It’s not something easily accomplished by parents these days, because life is more difficult to understand or deal with, but sharing interests does make it more fun to be a parent now.”

41. The underlined word gulf in Para.3 most probably means _________.

A. interest

B. distance

C. difference

D. separation

42. Which of the following shows that the generation gap is disappearing?

A. Parents help their children develop interests in more activities.

B. Parents put more trust in their children’s abilities.

C. Parents and children talk more about sex and drugs.

D. Parents share more interests with their children.

43. The change in today’s parent-child relationship is _________.

A. more confusion among parents

B. new equality between parents and children

C.1ess respect for parents from children

D. more strictness and authority on the part of parents

44. By saying “today’s parents, the 40-year-olds, were on the ‘after’ side.” the author means that today’s parents _________.

A. follow the trend of the change

B. can set a limit to the change

C. fail to take the change seriously

D. have little difficulty adjusting to the change

45. The purpose of the passage is to _________.

A. describe the difficulties today’s parents have met with

B. discuss the development of the parent—child relationship

C. suggest the ways to handle the parent—child relationship

D. compare today’s parent—child relationship with that in the past

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甲、乙、丙均为经营长途客运业的专业户,3人商定合伙经营跑运输,每人出资30万元入伙,同时甲提出其业务经理丁善于管理,可以由丁以其管理才能入伙,不须交纳出资,乙、丙表示同意。4人一致同意由丁作为日常业务负责人。由于业务蒸蒸日上,4人都得到巨额利润,丁于是准备在担当合伙企业负责人的同时,再同他人合作开展另一个运输公司,遭到甲、乙、丙的反对。甲提出要退伙,乙、丙、丁勉强同意,但只同意退甲30万元了事,甲同意,并拿走30万元。半年后,甲妻见运输业务盈利可观,遂向乙、丙、丁提出不再退伙,并把30万元留给丁,3人表示等和甲谈后再说。3天后,丁在运输过程中遭遇车祸,亏损严重。甲、乙、丙、丁对如何分担债务发生争执。

甲的第一次退伙是否有效

题型:解答题

光发送机的组成包括()扰码、时钟提取、光源、光源的调制电炉、光源的控制电路及光源的监视和保护电路。

A.均衡放大器

B.码型变换

C.复用

D.以上都是

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