• 2014河北高考试题库ppt试题及答案-云返教育

    • 设f(x)=
      ax2+bx+1
      x+c
      (a>0)为奇函数,且|f(x)|min=2
      2
      ,数列{an}与{bn}满足如下关系:a1=2,an+1=
      f(an)-an
      2
      bn=
      an-1
      an+1

      (1)求f(x)的解析表达式;
      (2)证明:当n∈N
      +时,有bn≤(
      1
      3
      )n
      答案解析
      类型: 单选题     难度系数:
    • 1992年,党的十四大提出要使市场在国家宏观调控下对资源配置起基础性作用,十八届三中全会把市场在资源配置中的“基础性作用”修改为“决定性作用”。从“基础”到“决定”,是重大理论创新,是思想解放的重大突破。这一“突破”表明         
      答案解析
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    • 影片《唐山大地震》以艺术的手法,将一个普通家庭大灾难后32年的生活与情感展现在银幕上,突出人性和亲情这一主线,让观众得到心灵的洗礼,感受人性的光辉,增强对生命价值的理解。可见         
      答案解析
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    • 三个速度大小不同的同种带电粒子,沿同一方向从如图所示的长方形区域的匀强磁场上边缘射入强磁场,当它们从下边缘飞出时对入射方向的偏角分别为90°、60°、30°,则它们在磁场中的运动时间之比         
      答案解析
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    • 生物膜的结构特点是         
      答案解析
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    • 公元116年的一天,罗马街头,长期定居罗马的小亚细亚(罗马帝国的一部分)商人艾哈迈德遭到当地一群无赖的哄抢。艾哈迈德立即投诉法庭。法庭很快开庭审理了此案,无赖们受到严惩。法庭判案的依据是 D
      答案解析
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    • 中国是诗的国度,我们在漫步古诗苑时,分门别类的辑录是一个好方法。请写出表现奉献精神的两句古诗词。
      答案解析
      类型: 写作     难度系数:

    • Female Chinese space pioneers?
      CHINA plans to recruit(招募) women astronauts thanks to the lobbying(游说) of the leading women’s organization. Gu Xiulian, president of the All-China Women’s Federation(ACWF) (全国妇联), said on Saturday that she put forward a proposal that women be trained for space missions after the manned space flight last October. And it was accepted by the central authorities, local media reported. But the plan to recruit female astronauts has yet to be worked out, according to sources close to the astronaut-training programme.
      Beijing needs mental health care
      MORE than 1,000 people committed suicide(自杀) in Beijing last year, and experts have been encouraging the capital to set up a mental health care system as soon as possible, local media reported last week. About 20 percent of the people of Beijing live in unhealthy conditions, with 3 percent of these suffering from affective disorder and 5 percent reporting symptoms of depression, according to the Beijing Mental Health Service Center.
      No need to fear your licence plate
      CAR licence plates in Shenzhen and Guangzhou, Guangdong Province, will not have the number “four” from this month on ---a move that has led to heated discussion among officials, schools and residents. The word for “four” sounds like “death” in Cantonese. The number has been cleared away from the computer data banks that generate the six-digit licence numbers for local cars. Some say that, for the first time, a public agency service has considered local customs and bans. Others worry it will encourage superstitious(迷信的) beliefs.
      83.We can infer from the news that ____.
      A.there are several female astronauts in China now
      B.people in Guangdong province hate number “four”
      C.the mental disorder concerns everybody all over the country
      D.the city government of Beijing has promised to set up a mental health care system
      84.The underlined sentence in the third news means that __ __.
      A.there is no number “four” in the computers in Shenzhen
      B.computer is used to print six-digit car licence numbers
      C.local cars will be protected to use six-digit car licence numbers
      D.number “four” will no longer appear in the six-digit car licence numbers
      85.What is the message of the first news?
      A.China only needs male astronauts.
      B.Gu Xiulian wants to be the first space woman.
      C.Society doesn’t discriminate(歧视) against women in China.
      D.The proposal of female astronaut training hasn’t been approved.
      86.Which word has the same meaning as the underlined word “symptoms”?
      A.symbol B.signs C.sorts D.shocks
      答案解析
      类型: 阅读理解     难度系数:

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