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设y=2x+sin2，则y&39;=______．

A.
【参考答案】

2xln2
本题考查的知识点为初等函数的求导运算．
本题需利用导数的四则运算法则求......

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未知题型
阅读《大同》中的一段文字，并回答下列试题。
今大道既隐，天下为家，各亲其亲，各子其子，货力为己，大人世及以为礼，城郭沟池以为固，礼义以为纪。以正君臣，以笃父子，以睦兄弟，以和夫妇，以设制度，以立田里，以贤勇知，以功为己，故谋用是作，而兵由此起。禹、汤、文、武、成王、周公，由此其选也。此六君子者，未有不谨于礼者也。以著其义，以考其信，著有过，刑仁讲让，示民有常。如有不由此者，在势者去，众以为殃，是谓小康。
分析概括这段文字中所言小康社会的主要特点。
解释这段文字中加点字的含义。
隐：
作：
兵：
小康：
挑出这段文字的排比句，并分析其效果。
请帮忙给出每个问题的正确答案和分析，谢谢！
未知题型
Eleanor Roosevelt was the wife of America′s 32nd president, Franklin Roosevelt. She helped her husband in many ways during his long(21)lifE.She also became one of the most (22) women in AmericA.She fought for equal rights for all peoplE.
Eleanor was born in New York City in 1884. Her family had great wealth. But Eleanor did not have a happy (23). Her parents died when she was very young. She was raised by her grandmother. Eleanor (24) that as a child, her greatest happiness came from helping others. tn the early 1900s, many people were worried about the problems of (25) people who came to America in (26) of a better lifE.
Eleanor could not(27) how people lived in such poor conditions while she and some others had so much (28) . After she finished school,Eleanor began (29) children to read and write in one of the poorest areas of New York City. She also looked into (30) where workers were said to be badly (31).She saw little children of four and five years old working until they (32)to the floor. She became involved(参与) with other women who (33) the same ideas about improving social conditions. Franklin Roosevelt began (34) Eleanor when he was in New York. They got (35) in 1905. In the next eleven years, they had six children. The Roosevelts moved to Washington D.C.in 1913.
选()
A.technical
B.business
C.political
D.research
选()A.different
B.strict
C.lonely
D.important
选()A.poor
B.strange
C.foolish
D.lazy
选()A.wealth
B.knowledge
C.courage
D.strength
选()A.disturbing
B.teaching
C.forcing
D.reminding
选()A.hospitals
B.factories
C.schools
D.armies
选()A.dropped
B.run
C.jumped
D.sank
选()A.discovered
B.allowed
C.shared
D.mentioned
选()A.praising
B.visiting
C.attacking
D.controlling
选()A.married
B.separated
C.accepted
D.united
选()A.job
B.dream
C.future
D.childhood
选()A.followed
B.chosen
C.protected
D.treated
选()A.remembered
B.forgot
C.doubted
D.imagined
选()A.honour
B.search
C.memory
D.favor
选()A.receive
B.regret
C.understand
D.admit
请帮忙给出每个问题的正确答案和分析，谢谢！
未知题型
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