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做好环境消毒是预防甲型H1N1流感的有效措施,过氧乙酸(CH3COOOH)

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  • 【名词&注释】

    文言文(classical chinese)、消毒剂(disinfectant)、过氧乙酸(peracetic acid)、抽油烟机(smoke exhaust ventilator)、稀盐酸(dilute hydrochloric acid)、氢氧化钠溶液(sodium hydroxide solution)、继续前进、努力学习(learn hard)

  • [多选题]做好环境消毒是预防甲型H1N1流感的有效措施,过氧乙酸(CH3COOOH)是常用的消毒剂之一。下列有关过氧乙酸的说法不正确的是

  • A. 过氧乙酸属于有机高分子化合物
    B. 过氧乙酸由碳、氢、氧三种元素组成
    C. 过氧乙酸中碳、氢、氧的原子个数比为2:4:3
    D. 19%的过氧乙酸溶液中氧元素的质量分数为12%

  • 查看答案&解析
  • 举一反三:
  • [单选题]39.
  • A. turned up
    B. came down
    C. went on
    D. got over

  • [单选题]19.
  • A. hardly
    B. good
    C. hard
    D. bad

  • [单选题](B)ArecentreportfromDazhouDailysaysabout18%ofDazhouteenagerscanhaveproblemswiththeirminds(内心,精神).Somestudentsbecomeworriedbecausetheyhavetostudyveryhard.Othershavetroublegettingonwellwith
  • A. peopleliketheirparentsandclassmates.
    B. ZhangQiang,aJunior2studentfromDazhou,couldnotunderstandhisteachersinclassandwasdoingbadlyinhis
    C. lessons.Hewasafraidofexams.Whenhelookedattheexampaper,hecouldn’tthinkofanythingtowrite.
    D. Anotherstudent,a15-year-oldgirlcalledWuYanfromGuang’anoftenarguedwithherclassmatesevenherparentsbecauseofsomedifferentideas.Shebecamesoannoyed
    E. aboutthemthatshestartedtocutherfingerwithaknife.
    F. However,manystudentswhohaveproblemswon’tgoforadviceorhelp.Somethinktheywilllookstupid(愚蠢的)iftheygotoseeadoctor.Othersdon’twanttotalkabouttheirsecrets.Inordertosolvetheteenagers’problems,hereissomeadvice:
    G. ●Talktoyourparentsorteachersoften.
    H. ●Takepartingroupactivitiesandplaysports.
    I. ●Gotoseeadoctorifyoufeelunhappyorunwell.
    J. 51.Itisreportedthat_______studentsinDazhoucanhaveproblemswiththeirminds.
    K. most
    L. many
    M. some
    N. allthe

  • [单选题]24. Storms can increase student's in, this discovery was made_________
  • A. in 1982
    B. by 1982 scientists
    C. by 1982 students
    D. by a study of 1982 examples

  • [单选题]The speaker is probably .
  • A. a host
    B. a singer
    C. a dancer
    D. a teacher

  • [单选题]阅读下面的文言文,完成6—8题。邹忌讽齐王纳谏
  • A. 邹忌修八尺有余,而形貌昳丽。朝服衣冠,窥镜,谓其妻曰:“我孰与城北徐公美?”其妻曰:“君美甚,徐公何能及君也?”城北徐公,齐国之美丽者也。忌不自信,而复问其妾,曰:“吾孰与徐公美?”妾曰:“徐公何能及君也!”旦日,客从外来,与坐谈,问之:“吾与徐公孰美?”客曰:“徐公不若君之美也。”明日,徐公来,孰视之,自以为不如;窥镜而自视,又弗如远甚。暮寝而思之,曰:“吾妻之美我者,私我也;妾之美我者,畏我也;客之美我者,欲有求于我也。”
    B. 于是入朝见威王,曰:“臣诚知不如徐公美。臣之妻私臣,臣之妾畏臣,臣之客欲有求于臣,皆以美于徐公。今齐地方千里,百二十城,宫妇左右莫不私王,朝廷之臣莫不畏王,四境之内莫不有求于王。由此观之,王之蔽甚矣。”
    C. 王曰:“善。”乃下令:“群臣吏民,能面刺寡人之过者,受上赏;上书谏寡人者,受中赏;能谤讥于市朝,闻寡人之耳者,受下赏。”令初下,群臣进谏,门庭若市;数月之后,时时而间进;期年之后,虽欲言,无可进者。
    D. 燕、赵、韩、魏闻之,皆朝于齐。此所谓战胜于朝廷。
    E. 下列句子中加点词语的解释,正确的一项是
    F. 明日,徐公来,孰视之 明日:明天
    G. 今齐地方千里,百二十城 地方:土地
    H. 数月之后,时时而间进 时时:常常
    I. 期年之后,虽欲言,无可进者 期年:满一年

  • [单选题]下列突发事故的处理措施正确的是
  • A. 有人不慎跌入含有大量二氧化碳的深洞中,不采取任何防护措施,立即下洞救人
    B. 厨房中的煤气大量泄露时,立即关闭气阀,不能打开抽油烟机排气
    C. 眼睛里不小心溅进氢氧化钠溶液(sodium hydroxide solution),立即滴入稀盐酸来中和
    D. 图书档案起火,用大量水浇灭

  • [单选题]13.I'm going skating. Would you like to go with_________?
  • A. me
    B. I
    C. my
    D. mine

  • [单选题]43.
  • A. kept
    B. continued
    C. lasted
    D. tried

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