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在盛有水的烧杯中加入以下某种物质,形成溶液过程中,温度下降。

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  • 【名词&注释】

    方案设计、阿拉善、核泄漏事故、氯化钠(sodium chloride)、性格特点(temperamental characteristics)、参差不齐(irregularity)、针锋相对、绘声绘色、东京电力公司、瞬息万变(illusive)

  • [单选题]在盛有水的烧杯中加入以下某种物质,形成溶液过程中,温度下降。这种物质可能是(     )

  • A. 氯化钠
    B. 硝酸铵
    C. 氢氧化钠
    D. 蔗糖

  • 查看答案&解析 点击获取本科目所有试题
  • 举一反三:
  • [单选题]下列各句中没有语病的一句是(2分) ( )
  • A. 由强烈地震引发的日本福岛第一核电站核泄漏事故,成了日本东京电力公司不愿提及的难言之隐。
    B. 在毕业年级学生中进行的体育测试,有超过20%左右的学生,由于平日缺乏锻炼,导致体育成绩很不理想。
    C. 二连的恐龙化石、锡盟的辽阔草原、包头的南海湿地、阿拉善的沙漠奇石,成为各自地区颇具特色的旅游资源。
    D. 每天背诵一段绕口令,每天练上一会儿传统相声段子,这种看似琐碎的做法训练和培养了他对相声艺术的兴趣。

  • [单选题]下列词语中,加点字的读音全部正确的一组是
  • A. 隽永(jùn) 煞费苦心(shà) 处境(chǔ) 参差不齐(chī)
    B. 眩目(xuàn) 扣人心弦(xuán ) 湍急(cuān) 惴惴不安(zhuì)
    C. 忐忑(tè) 截然不同(jié) 荤菜(hūn) 呱呱坠地(gūa)
    D. 腼腆(diǎn ) 恬静优美(tián ) 吮吸(shǔn) 瞬息万变(illusive)(shǔn)

  • [单选题]30.
  • A. mountains
    B. cities
    C. rivers
    D. seas

  • [单选题]决策过程中是在( )阶段基于决策目标和条件,分析制定可能采取的若干行动方案。
  • A. 信息收集
    B. 方案设计
    C. 方案评价
    D. 方案选择

  • [单选题]______________
  • A. Could you please help me?
    B. How much is it?
    C. That’s too expensive.
    D. What color do you want?
    E. Here is the money.
    F. F. How do you like this T-shirt?
    G. G. What size would you like?

  • [单选题]30. Why can fish swim in the water? Jack's answer is ________ .
  • A. fish can't walk on land
    B. fish can- t swim on land
    C. fish can-t walk in the water
    D. fish has no legs or hands

  • [单选题]I'mnotsureaboutthemeaningoftheword.You'dbetterlookitupina____.
  • A. letter
    B. dictionary
    C. postcard
    D. notice

  • [单选题]One day,a teacher was speaking to a group of students about how to (31) their time.He gave an example those students would never forget.He pulled out a wide jar(罐子) and put it on the table. He also took out several rocks and carefully put them into the jar one at a time. When no more rocks would( 32) inside,he asked,"Is this jar full?"
  • A. "The teacher replied,"Really?" He pulled out a box of small stones. He dumped some in and ) (33)the jar. The stones went down into the spaces (34) the big rocks. He then asked the group once more,"Is this jar full?"
    B. "Good ! "he replied. He brought out a glass of sand and dumped the sand into the jar and it went into all of the spaces( 35) . Once more he asked the question,"Is this jar full?"
    C. Once again he said,"Good! Then he poured a cup of water in (36) the.jar was full. Then he asked,"What is the key point here?"One student put up his hand and said,"The key point here is that even if you are busy,you can (37) plan everything well if you try really hard ! "" No, the speaker replied,"that's not the point. The point is if you don-t put the big rocks In(38) ,your ’ll never get them in. What are the 'big rocks in your (39) ? Time with your loved ones,your education,or your dreams? Remember to put these big rocks in first,or you ’II never get them in (40) ."
    E. spend
    F. take
    G. kill
    H. arrange

  • [单选题]下列下面对选文的分析不正确的一项是
  • A. 选文主要写了唐雎同秦王进行针锋相对斗争的过程,以及斗争的结局。
    B. 选文第一自然段写唐雎坚决抵制秦王的骗局,断然拒绝“易地”,这是双方斗争的最高潮部分。
    C. 选文主要通过绘声绘色的“对话”来塑造唐雎和秦王的形象,鲜明地表现了人物各自的性格特点。
    D. 在这场尖锐的矛盾冲突中,秦王骄横狂暴、阴险狡诈,而唐雎表现得正气凛然、不畏强暴。

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