• 2011吉林高考试题库下载版试题及答案-云返教育

    • 日前,全国党委新闻发言人首次培训班在北京举行。这是党委新闻发言人制度建立以来,对全国党委新闻发言人进行的第一次集中培训。建立党委新闻发言人制度有利于
      答案解析
      类型: 多选题     难度系数:
    • 已知f(x)=
      {
      (3a-4)x+4a,x<1
      -ax2+2x+3,x≥1
      是定义域R上的减函数,则a的取值范围是         
      答案解析
      类型: 单选题     难度系数:
    • 荀子曰:“蓬生麻中,不扶自直;白沙在涅,与之俱黑。”从文化对人的影响角度看,下列典故和成语体现的道理与之一致的是
      ①孟母三迁 ②耳濡目染 ③东施效颦 ④近朱者赤,近墨者黑
      A.①②③ B.①②④ C.①③④ D.②③④
      答案解析
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    • 在电场中某一点放入正的检验电荷q时,它受到的电场力为F,那么(  )
      答案解析
      类型: 多选题     难度系数:
    • “塑化剂”“口蹄疫”“疯牛病”“艾滋病”是全世界关注的问题,下列说法错误的是  
      答案解析
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    • (5分)分析下面图解,回答问题:

      ⑴该图所示为
      肽化合物。
      ⑵填写虚线框内结构的名称:A.
          B.  C. 
      ⑶生成此化合物的反应叫
       
      答案解析
      类型: 解答题     难度系数:
    • 已知f(x)=
      {
      (3a-4)x+4a,x<1
      -ax2+2x+3,x≥1
      是定义域R上的减函数,则a的取值范围是         
      答案解析
      类型: 填空题     难度系数:
    • 已知函数f(x)=ax2+ax-4(a∈R).
      (1)若函数f(x)恰有一个零点,求a的值;
      (2)若对任意a∈[1,2],f(x)≤0恒成立,求x的取值范围;
      (3)设函数g(x)=(a+1)x
      2+2ax+2a-5,是否存在实数a,使得当x∈(-2,-1)时,函数g(x)的图象始终在f(x)图象的上方,若存在,试求出a的取值范围,若不存在,请说明理由.
      答案解析
      类型: 解答题     难度系数:
    • 【小题1】As soon as I hear my alarm clock, I jump out of my bed. It takes me less than fifteen minutes to wash, get changed, have breakfast, leave home and get on a bus.
      ________________________________________________________
      【小题2】Sometimes, if the weather forecast is good, my friends and I drive to the countryside for a weekend break. We like to visit nice, quiet places far away from the city and go walking where there are no shops, crowds or the tube.
      _______________________________________________________________
      【小题3】I have cows, sheep, pigs and chickens on my farm. I have to make sure they are free of sickness. I also grow wheat and vegetables so there are many things to look after.
      _______________________________________________________________
      【小题4】When the spaceship was doing its seventh circle, Yang Liwei showed the flags of China and the United Nations, expressing the wishes of the Chinese people to explore and use space peacefully.
      _______________________________________________________________
      【小题5】As Yang Liwei returned into the earth’s atmosphere, helicopters were flying to where he would land, ready to collect him.
      _______________________________________________________________
      答案解析
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