(1)下面所列的是中学化学实验室中几种常见的仪器:容量瓶、酸式滴定管、碱式滴定管

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问题:

(1)下面所列的是中学化学实验室中几种常见的仪器:容量瓶、酸式滴定管、碱式滴定管、温度计、量筒、托盘天平、普通漏斗、玻璃棒、烧杯.

①若要进行中和滴定实验,还缺少的玻璃仪器是______.

②若要用碳酸钠固体配制一定物质的量浓度的碳酸钠溶液,还缺少的玻璃仪器是______.

(2)某学生往一支试管中按一定的顺序分别加入下列几种溶液(一种溶液只加一次):

A.KI溶液  B.淀粉溶液  C.NaOH溶液  D.稀H2SO4  E.氯水.

发现溶液颜色按如下顺序变化:无色→棕黄色→蓝色→无色→蓝色.

依据溶液颜色的变化,判断加入以上药品的顺序是(填写序号)______.

(3)众所周知,氢气燃烧生成水.然而,资料表明,氢气燃烧时除生成水外,还生成另一产物.某同学用如图所示的实验装置,验证该产物的存在.实验步骤及现象如下:制H2、验纯,将火焰对着冰块.

①在小烧杯内加入用硫酸酸化的稀KI淀粉溶液,将小烧杯放在冰块下方,

观察到烧杯中溶液由无色变成了蓝色.

②在另一个小烧杯内加入用硫酸酸化的稀KMn04溶液,将小烧杯放在冰块下方,观察到烧杯中溶液变成了无色.请你写出另一产物的结构式:______;

由上述实验中可以归纳出该产物的化学性质有______.

考点:酸碱中和滴定配制一定物质的量浓度的溶液测定物质组成、成分含量
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       海拔每升高1000米,气温约降低6℃。南极洲海平面为一5℃时,南极点(海拔2800米)的气温是      

          ℃,文森峰顶(海拔5140 米)的气温是               ℃。

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掷硬币两次,事件“全是正面或全是反面”的概率是( )。

A.1/4

B.1/2

C.3/4

D.1

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关于盆腔炎症,正确的是()

A.病原体为一般化脓菌,可经胎盘剥离面及手术创面进入体内

B.少数病人因邻近器官炎症直接蔓延

C.急性输卵管卵巢炎是化脓性炎症经宫旁结缔组织蔓延到输卵管周围而形成的

D.输卵管炎病变以间质炎为主,内膜层可不受累或受累极轻

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In War Made Easy Norman Solomon demolishes the myth of all independent American press zealously guarding sacred values of free expression. Although strictly focusing on the shameless history of media cheerleading for the principal post World War’ Ⅱ American wars, invasions, and interventions, he calls into question the entire concept of the press as some kind of institutional counterforce to government and corporate power.

Many of the examples compiled in this impeccably documented historical review will be familiar to readers who follow the news on the Internet. But such examples achieve flesh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single warhawk argument ( " America Is a Fair and Noble Superpower, " " Opposing the War Means Siding with the Enemy, " "Our Soldiers Are Heroes, Theirs Are Inhuman " ), illustrated with historical examples from conflicts in the Dominican Republic, E1 Salvador, Vietnam, Grenada, Panama, Kosovo, both Iraq wars, and others in which the media were almost universally enthusiastic accomplices.

The book should really be subtitled " War reporting doesn’t just suck, it kills. " It makes you feel like demanding a special war crimes tribunal for corporate media executives and owners who joined the roll-up to " shock and awe " as non-uniformed psywar ops. To be sure, this would raise the issue of whether or not following orders might suffice for the defense of obedient slaves such as Mary McGrory and Richard Cohen, who performed above and beyond the call of duty. " He persuaded me, " McGrory gushed the morning after Colin Powell addressed a plenary session of the United Nations on February 5,2003, declaring that Iraq had weapons of mass destruction. " The cumulative effect was stunning." In the same Washington Post edition, Cohen wrote.

The evidence he presented to the United Nations—some of it circumstantial, some of it absolutely bone-chilling in its detail—had to prove to anyone that Iraq not only hasn’t accounted for its weapons of mass destruction but without a doubt still retains them. Only a fool could conclude otherwise.

Solomon demonstrates how this kind of peppy prewar warm-up degenerates into drooling and heavy breathing once the killing begins. As if observing a heavy metal computer game, the pornographers of death concentrate on the exquisite craftsmanship and visual design of the murder machines, and the magnificence of the fiery explosions they produce.

The author of this passage thinks War Made Easy is()

A. questionable

B. controversial

C. well-proven

D. finely-polished

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从市场营销的角度来说,市场是指()

A.买卖的场所

B.商品交换关系的总和

C.交换过程本身

D.某种潜在或有支付能力的需求

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