商、周时代的铜器多为礼器，形制精美，花纹繁密而厚重，多用细密的花纹为底，衬托高浮雕的

PCR-SSCP用于细胞粘附分子基因的多态性测定的主要缺点是什么?

经产妇，26岁，足月妊娠，因规律宫缩3小时入院。胎动及宫缩后胎心突然变慢。肛查：胎头高浮，宫颈展平，开大2cm，胎膜未破，估计胎儿体重3400～3500g，孕妇左侧卧位及抬高臀部时胎心迅速恢复正常，骨盆测量正常。

出现不能用仰卧位低血压解释的延长减速 （）

A.脐带缠绕

B.脐带脱垂

C.脐带先露

D.脐带打结

E.脐带扭转

1998年7月12日17时10分，深圳市宝安区沙井镇上星村第三工业区的深圳市智茂电器制品厂发生重大火灾事故，造成17名员工死亡(4男，13女)，重伤18名，轻伤40名，烧损4450m²的四层厂房一栋，烧毁电风扇半成品、原材料一批，直接经济损失约 200万元。
6月12日17时10分左右，智茂电器制品厂搬运组组长杜干与员工农历成、刘三毛从二楼拉拖车下楼，在一楼大门左侧楼梯口搬运纸箱装货，员工冯福林从三楼下到一楼门口等待下班打卡，杜平等人听到有人呼叫“着火了”，发现仓库东南角堆放纸皮处有较大浓烟和火光冒起，相继跑出大门处。此时正在一楼仓库内工作的仓管员彭乐江、彭维佳及来料质量控制部丁继红、王福超四人也听到“着火了”，彭乐江并听到灯管被烧得噼里啪啦的作响，认为是电线着火，随即拉下电闸，切断电源。因见到火势很大，彭等四人都向大门外跑去，在二、三楼工作的十余名员工也正陆续下楼准本下班打卡，发现烟火之后争相往外跑。此时，火已烧到大门处，由于烟囱效应，浓烟迅速沿楼梯涌上，夹杂浓烈的塑胶气味，楼上的员工已无法下楼。由于四楼楼面通道被防盗门锁住，大部分员工无法上到楼顶，只有7名员工撬开防盗门的门板到楼顶。
17时30分51秒，才接到火警报告(报警不及时)的宝安区消防大队迅速调派6台消防车(1台云梯登高车、1台照明抢险车、4台水罐消防车)和300名指战员，与17时38分到达火灾现场，随后展开援救和灭火工作，消防人员利用云梯登高车从天台和四楼抢救被困人员46名。其中24人在指挥员的引导下跳楼逃生，另有3人沿水管爬下。宝安区消防大队随后增派一台云梯车、一台照明抢险车、7台水罐车，赶赴现场，于18时46分终于将大火扑灭，有效地阻止了火势向周边建筑物蔓延(东面为该厂写字楼，西北面为另外两家工厂)。
智茂电器制品厂由于日光灯松脱，镇流器发热，使堆放在他较近的纸皮引燃发生火灾，虽是偶然事件，却造成巨大的人员伤亡，厂方有不可推卸的责任。
问题：

（）中国物品编码中心启动了“中国条码推进工程”。

A、2003年7月

B、2003年8月

C、2003年4月

D、2003年5月

Halfway through " The Rebel Sell," the authors pause to make fun of" free-range" chicken. Paying over the odds to ensure that dinner was not, in a previous life, confined to tiny cages is all well and good. But"a free-range chicken is about as plausible as a sun-loving earthworm" : given a choice, chickens prefer to curl up in a nice dark corner of the barn. Only about 15% of "free-range" chickens actually use the space available to them.

This is just one case in which Joseph Heath, who teaches philosophy at the University of Toronto, and Andrew Potter, a journalist and researcher based in Montreal, find fault with well-meaning but, in their view, ultimately naive consumers who hope to distance themselves from consumerism by buying their shoes from Mother Jones magazine instead of Nike. Mr Heath and Mr Potter argue that" the counterculture, "in all its attempts to be subversive, has done nothing more than create new segments of the market, and thus ends up feeding the very monster of consumerism and conformity it hopes to destroy. In the process ,they cover Marx, Freud, the experiments on obedience of Stanley Milgram, the films "Pleasantville"," The Matrix" and "American Beauty", 15th-century table manners, Norman Mailer, the Unabomber, real-estate prices in central Toronto (more than once), the voluntary-simplicity movement and the world’s funniest joke.

Why range so widely The authors’ beef is with a very small group: left-wing activists who eschew smaller, potentially useful campaigns in favor of grand statements about the hopelessness of consumer culture and the dangers of "selling out". Instead of encouraging useful activities, such as pushing for new legislation, would-be leftists are left to participate in unstructured, pointless demonstrations against "globalization," or buy fair-trade coffee and free-range chicken, which only substitutes snobbery for activism. Two authors of books that railed against brands, Naomi Klein ( "No Logo") and Alissa Quart ("Branded"), come in for special derision for diagnosing the problems of consumerism but refusing to offer practical solutions.

Anticipating criticism, perhaps, Messrs Heath and Potter make sure to put forth a few of their own solutions, such as the 35-hour working week and school uniforms (to keep teenagers from competing with each other to wear ever-more-expensive clothes). Increasing consumption, they argue throughout, is not imposed upon stupid workers by overbearing companies, but arises as a result of a cultural "arms race": each person buys more to keep his standard of living high relative to his neighbors’. Imposing some restrictions, such as a shorter working week, might not stop the arms race, but it would at least curb its most offensive excesses. (This assumes one finds excess consumption offensive; even the authors do not seem entirely sure. )

But on the way to such modest suggestions, the authors want to criticise every aspect of the counterculture, from its disdain for homogenisation, franchises and brands to its political offshoots. As a result, the book wanders: chapters on uniforms and on the search for "cool" could have been cut. Moreover, the authors make the mistake of assuming that the consumers they sympathise with--the ones who buy brands and live in tract houses--know enough to separate themselves from their purchases, whereas the free-trade-coffee buyers swallow the brand messages whole, as it were.

Still, it would be a shame if the book’s ramblings kept it from getting read. When it focuses on explaining how the counterculture grew out of post-World War Ⅱ critiques of modern society, "The Rebel Sell" is a lively read, with enough humour to keep the more theoretical stretches of its argument interesting. At the very least, it puts its finger on a trend: there will be plenty of future critics of capitalism lining up for their free-range chicken.

The word "eschew" (paragraph 3)is closest in meaning to（）

A. organize

B. favor

C. shun

D. encourage