根据右图所示的溶解度曲线,回答下列问题. (1)若A代表的是熟石灰、氯化钠、硝酸

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问题:

根据右图所示的溶解度曲线,回答下列问题.

(1)若A代表的是熟石灰、氯化钠、硝酸钾三种物质中的一种,则A物质是______.

(2)在t2℃时,A、B、C三种物质饱和溶液的溶质质量分数由大到小的顺序是______.

(3)若保持原溶液溶质质量分数不变,把t3℃时C物质的饱和溶液变成不饱和溶液,应采用______的方法.

考点:关于溶液的计算固体溶解度
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下列反应的离子方程式书写正确的是

A.小苏打溶液与氢氧化钠溶液反应:HCO3+OH=CO32+H2O

B.NaHSO4溶液与Ba(OH)2溶液混合后显酸性:Ba2+OH+H+SO42=BaSO4↓+H2O

C.氧化亚铁溶液中滴加稀硝酸:Fe2+NO3+2H=Fe3+NO↑+H2O

D.偏铝酸钠水解:AlO2+2H2OAl(OH)3↓+OH

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在括号中填上恰当的关联词语。    

①北京(        )是城市,(        )它也跟着农村一齐过年,而且过得分外热闹。    

②种树人认为,(        )每天定时浇水,树苗的根(        ) 无法深入地下。     

③(        )我们是为人民服务的,(        )我们如果有缺点,就不怕别人批评指出。

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消毒的种类分为

A.疫源地消毒、预防性消毒

B.终末消毒、随时消毒

C.预防性消毒、随时消毒

D.随时消毒、疫源地消毒

E.疫源地消毒、终末消毒

题型:填空题

阅读下面两则材料,回答问题。(6分)

材料一:3 月 16 日,据《北京青年报》报道,针对两会上引起热议的“明星代言虚假食 品广告要担连带责任”,全国人大常委会法工委行政法室主任、 《食品安全法》起草负责人李 援日前在接受采访时首次明确回应,“按照新规定,明星代言虚假食品广告,可能因此赔得 倾家荡产”。

材料二:所谓“连带责任”,就是指消费者若购买了不符合安全标准的食品,合法权益受 到了损害, 他可选择向食品生产经营者要求承担赔偿责任, 也可以对广告中向消费者推荐过 这个食品的社会团体或者其他组织、个人要求全部或者部分赔偿。“面对消费者,形象代言 人的连带责任和食品经营者是同等责任, 同等责任意味着以你所有的财产作为赔偿, 这个责 任是很重的。比如三鹿奶粉事件,三鹿企业把全部家当赔完了,涉及的广告公司、电视台等 媒体、加上明星等责任人应根据事先合同约定分担余下的责任。 当然,新制定的《食品安 全法》今年 6 月 1 日才实施,并不溯及既往。”

(1)用一句话概括以上材料的内容。(2分)

(2)谈谈你对“明星代言虚假食品广告要担连带责任”这一事件的看法。(4分)

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Once upon a time, there lived many doves in the jungle. One day they went out in search of food. They flew long distances   41  did not get anything to eat. All of them were now completely   42.
A young dove asked the King Dove, “Your Majesty, please   43  us to take some rest.” The king replied, “Be  44 , my dear young fellow. We shall   45  get something to eat very soon.”
The young dove started flapping his wings with   46  and soon left everyone else behind. After some time, he   47  and spoke to others,  “Hey, I see lots of   48 down there.”
Hearing this, all the doves started   49  the scattered grains under a banyan tree.  50   the King Dove said, “It is too good to be true. There is something wrong. Don’t rush towards the grains. It may be a 51 .Some hunter must have laid a trap.”
But the doves were extremely hungry. The   52  of the grains was too tempting (诱惑人的). Without giving a(n)   53  to the king’s advice, they swooped down and started eating the grains. After having a big   54  , they tried to fly away only to   55  that they were caught in a net.
The King Dove said, “I told you before that it is a trick of some hunter.”
All of them felt ashamed and   56  . One of them said to the King Dove, “Oh, Your Majesty, please save us.”
So the King Dove said, “All of you must try to fly with the   57  at the same time and in the same   58, all of you.”
Just then they saw a(n)   59  show up. The King Dove said, “Now all of you, fly together.”
So all the doves flapped their wings together and flew with the net. The hunter stood dazed. He couldn’t   60  what he had just seen.
小题1:
A.butB.andC.soD.however
小题2:
A.excitedB.surprisedC.tiredD.embarrassed
小题3:
A.permitB.leaveC.letD.accept
小题4:
A.happyB.tough C.ashamed D.cool
小题5:
A.slowlyB.perhapsC.possiblyD.surely
小题6:
A.surpriseB.pleasureC.forceD.anger
小题7:
A.turned downB.turned backC.held back D.held down
小题8:
A.personsB.huntersC.grainsD.plants
小题9:
A.rushing towardsB.looking forC.picking up D.dropping down
小题10:
A.GladlyB.Amazedly C.HardlyD.Suddenly
小题11:
A.magicB.trickC.dreamD.mistake
小题12:
A.colorB.smellC.viewD.sight
小题13:
A.soundB.thoughtC.ideaD.care
小题14:
A.meetingB.discussionC.mealD.break
小题15:
A.appreciateB.realizeC.understandD.concern
小题16:
A.pleasedB.scaredC.fullD.sick
小题17:
A.foodB.kingC.netD.wing
小题18:
A.way B.placeC.directionD.circle
小题19:
A.hunter B.guideC.adultD.child
小题20:
A.believeB.rememberC.tellD.catch
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