下列有关实验的说法正确的是 A.除去铁粉中的铜粉,加入足量浓硫酸加热反应后进行过

题型:选择题

问题:

下列有关实验的说法正确的是

A.除去铁粉中的铜粉,加入足量浓硫酸加热反应后进行过滤

B.不用任何其他试剂就可以鉴别NaOH溶液和Al2(SO4)3溶液

C.制备Fe(OH)3胶体,通常是将Fe(OH)3固体溶于热水中

D.某溶液中加入盐酸能产生使澄清石灰水变浑浊的气体,则该溶液中一定含有CO32

考点:化学实验的基本操作化学实验安全危险化学品的标志化学药品的变质
题型:选择题

In WAR MADE EASY Norman Solomon demolishes the myth of an 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 fresh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single war hawk 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, " ncGrory gushed(热情洋溢地表达) 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—or possibly a Frenchman—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

题型:选择题

下列词语中,没有错别字的一项是[ ]

A.震慑 金箍咒 无暇顾及 城门失火,殃及池鱼

B.谜团 掉书袋 皇天厚土 为渊驱鱼,为丛驱鹊

C.祥和 绵里针 改弦更张 仰之弥高,钻之弥艰

D.赝品 莫须有 冥顽不化 前事不忘,后事之师

题型:选择题

有关良性阵发性位置性眩晕的描述,不恰当的是()。

A.是临床上最常见的眩晕性疾病

B.典型表现为头位改变诱发的短暂旋转性眩晕发作和眼震

C.体位试验有助于判断受累的半规管

D.药物治疗是目前控制眩晕最有效的方法

E.本病有一定的自限性

题型:选择题

有关Ⅲ型高脂血症代谢性改变的叙述错误的是

A.β-VLDL经肝的ApoE受体清除受阻

B.肝从CM残粒获得的外源性胆固醇减少,自身合成胆固醇并分泌VLDL增多

C.VLDL过度生成而堆积在血浆中

D.LPL活性升高

E.VLDL不能转变成LDL

题型:选择题

阅读下面两个材料并回答问题:【材料一】2011年10月3日,诺贝尔奖委员会宣布,美国科学家布鲁斯·巴特勒、卢森堡科学家朱尔斯·霍夫曼和加拿大科学家拉尔夫·斯坦曼获得2011年诺贝尔医学生理学奖。在长期进化过程中人体具备两种免疫机能:一是“固有免疫”,二是“获得性免疫”。布鲁斯·巴特勒、朱尔斯·霍夫曼的获奖领域在前者;而拉尔夫·斯坦曼的工作主要在后者。布鲁斯·巴特勒、朱尔斯·霍夫曼发现了由“Toll”基因编码的关键受体蛋白,该受体蛋白能识别病原微生物,并激活“固有免疫”,打开免疫反应的第一步;拉尔夫·斯坦曼发现的树突状细胞在免疫应答中作用,树突状细胞在体内游弋,发现并摄取病原体的特异性抗原,并报告给T淋巴细胞,T细胞将调动其他免疫细胞发生级联反应,最终消灭病原体。

材料中所描述的“固有免疫”就是()免疫,这种免疫对所有的病原体都有防御作用。

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