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【单选题】
设 在点 处连续 ( n 为任一自然数 ) ,且 . 则下列叙述正确的是( ) .
A.
当n为奇数时, 不是 的极值点;当n为偶数时, 是 的极值点;
B.
当n为奇数时, 是 极值点;当n为偶数时, 不是 的极值点;
C.
当n为奇数时, 是 的极值点;当n为偶数时, 不是 的极值点;
D.
当n为奇数时, 不是 极值点;当n为偶数时, 也不是 的极值点;
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参考答案:
举一反三
【单选题】The author seems to think that railways are reminders of the______.
A.
growing dislike in England of the Victorian age
B.
benefits that the machine age has brought to man
C.
ugliness and oppression that modem society has overcome
D.
personal concern and solid beauty of a past age
【单选题】There is very______ knowledge about how to make the transition from childhood to adulthood less painful.
A.
few
B.
little
C.
many
D.
numerous
【简答题】案例:在《醇厚的中原韵》的音乐公开课上,音乐教师非常投入地讲解《沂蒙山小调》中描绘的自然风光。她充满感情地问:“这么美的沂蒙山,这么美的音乐,同学们喜欢吗?”学生异口同声地回答“喜欢!”这时,学生中却突兀地想起一个不同的声音:“好土。”那是一个眼睛很大的男生说的,老师未予以关注,继续充满感情地说:“多好的音乐啊,同学都很喜欢,那我们再来听一遍。”这时那个男生在嘀咕着“一点也不好听”,但声音明显轻了...
【简答题】Translation from English into Chinese Play is the principal business of childhood, and more and more in recent years research has shown the great importance of play in the development of a human being...
【判断题】仲裁协议的签订建立在双方当事人自愿、平等和协商一致的基础上,以授权仲裁庭通过仲裁方式解决争议,并得到公正裁决为目的。
A.
正确
B.
错误
【多选题】Gifts are reminders of pleasant times and friendships, but each country has its ( ) and ( ) for giving gifts.
A.
seasons
B.
occasions
【单选题】The ______ from childhood to adulthood is often a difficult time for a young person.
A.
transaction
B.
transmission
C.
transition
D.
transformation
【简答题】在进行《乌鸦喝水》的教学时,教师组织学生讨论这样一个问题:“乌鸦为什么喝不到瓶子里的水?”经过讨论,绝大部分学生都认为原因有两个:一是瓶子的口太小,乌鸦的嘴伸不进去;二是瓶子里的水太少,乌鸦的嘴够不着。但一位学生有不同的意见,“因为乌鸦的嘴太大了,伸不进瓶子”。老师一愣,随之一笑坐下,再仔细读读课文。”学生满脸不解地坐下,可是不到两分钟,学生又举手了:“老师,我说的书上没写。”被打断教学的教师显然...
【简答题】and are reminders of the earth’s instability and changing face.
【单选题】Psychoanalysts tend to regard both______and masochism as arising from childhood deprivation.
A.
attachment
B.
distinction
C.
ingenuity
D.
sadism
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