题目

．下列关于物质的检验说法正确的是（  ） A．加入氯化钡溶液有白色沉淀生成，再加稀硝酸，沉淀不消失，一定有硫酸根离子 B．钾元素焰色反应的操作是：将铂丝放在稀盐酸中洗涤后灼烧至无色，然后再用铂丝蘸取固体氯化钾， 进行灼烧，直接观察火焰颜色。 C．加入NaOH溶液，加热，放出能使湿润的红色石蕊试纸变蓝的气体，证明一定含有NH4+ D．加入AgNO3溶液，有白色沉淀生成，证明含有Cl-2．For most of the eight years they have been married，Ryan has never received a hug from his wife，Tracy．He has not even received a（11）B"hello"or a smile．Tracy has been（12）C  since 2008．But this is not a story about the（13）Doutcome of a young lady．Rather，it is about a man who has stayed（14）Ato his wife，nursing her night and day，making sure she is as （15）Aas possible．Ryan and Tracy（16）C  in a friend's home in 2003．"She was beautiful and interesting to talk to，"Ryan says of his first （17）Aof Tracy．In 2005，they got married and were very happy．However，a call put the couple's life in （18）Ba month after their daughter was born．Ryan was at work when a neighbour called to inform him that Tracy had been （19）Bto the hospital．（20）C，he ran to the hospital．When he got there，he knew his （21）Dhad been treated for fever．However，the fever did not（22）B  after Tracy received the medical treatment．Tracy's breathing became laboured and was （23）Dto speak．The medical exammation （24）Ashe developed an infection damaging her nerve system．Tracy went into a coma （昏迷）and a few days later，though she regained consciousness，she （25）Ccould not move her lower legs．"she was admitted to hospital for four months and （26）Adoctors did all they could，her （27）Cgot worse，"Ryan says．She could no longer （28）Dher legs，and lost the ability to give voices．"Those four months are the most （29）Btime I have ever had．I have never stopped hoping and praying she will regain her（30）D，"Ryan Isays with a smile，"I miss her laughter，and wonder what kind of a mother she would be to our daughter．"11．A．happyB．simpleC．differentD．basic12．A．weakB．aloneC．illD．cruel13．A．magicB．excitingC．unexpectedD．sad14．A．trueB．strangeC．rudeD．useful15．A．comfortableB．specialC．safeD．conscious16．A．marriedB．stayedC．metD．worked17．A．impressionB．expressionC．discussionD．attention18．A．dangerB．troubleC．surpriseD．silence19．A．dashedB．rushedC．pushedD．carried20．A．AngryB．ConfidentC．AnxiousD．Proud21．A．daughterB．friendC．neighborD．wife22．A．slow downB．go downC．look downD．burn down23．A．readyB．eagerC．unwillingD．unable24．A．revealedB．repeatedC．agreedD．admitted25．A．evenB．insteadC．stillD．again26．A．thoughB．afterC．sinceD．when27．A．attitudeB．examinationC．conditionD．pain28．A．cleanB．removeC．touchD．move29．A．wonderfulB．difficultC．ridiculousD．important30．A．positionB．powerC．confidenceD．health．