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C Why Black Friday Shoppers Still Crowd Stores To many of us, the ideas of rushing out to a superstore the day after Thanksgiving is appealing. Why would anyone race to crowded stores when they could stay in with family, or watch college football? We can’t say we know the answer for sure. But we do feel amazed at those who pour into stores looking for Black Friday bargains. Seemingly, nothing can stop them. Not the weather. Not the crowds. And not the fact that hurrying to a store in the age of instant e-commerce seems so...last century. To be sure, holiday shopping habits do appear to be shifting. The National Retail ( 零售 ) Federation has stopped breaking up its holiday sales numbers by whether they come from e-tail purchases or from physical stores. It’s a pretty good sign that retailers don’t want to bring further attention to the declining fortunes of brick-and-mortar stores. But there is no denying that people still love going to stores. Actual shopping in actual places remains an important part of the holiday ceremony for millions of Americans. To many, it’s the difference between playing a sport and playing a video game. As commercial as stores may be, they are still places where actual human beings interact. In a store, the “courageous” shopper performs the approving act of finding a present. That item might be heavily promoted by the store, but it doesn’t drop into one’s cart. It is picked up and examined before a decision is made. Maybe it gets put back on the shelf when the shopper changes his or her mind. Maybe there is a conversation with a sales clerk. The process is not that different than it would have been decades ago. Online, the shopper has barely logged in before being faced with disturbing algorithmic ( 大数据的 ) suggestions based on earlier purchases. This hardly qualifies as shopping. This hardly qualifies as thinking. Perhaps we are reading too much into the Black Friday phenomenon. But we suspect one reason Black Friday remains is that it involves an act of resistance against the Internet age. That would hardly be unreasonable. There aren’t many studies showing that time spent in stores is bad for one’s health, while there are quite a few drawing a link between time spent online and depression. Perhaps the people crowding into stores aren’t the crazy ones after all.
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【单选题】在每天或每次拣选之前,计算所需货品的总拣选量,再查看拣货区现存货品量,计算差额并在拣货作业开始前补足货品的方法是()。
A.
批次补货
B.
定时补货
C.
随机补货
D.
定量补货
【判断题】动脉和静脉出血可采取相同止血方法。
A.
正确
B.
错误
【判断题】若作用在物体上的主动力的合力的作用线落在摩擦锥内,则无论主动力的合力有多大,物体总能保持平衡。
A.
正确
B.
错误
【简答题】为探究光照强度对不同植物幼苗光合作用能力的影响,某研究小组将生长状况相同的不同植物的幼苗分成A、B两组,分别栽种在温度适宜,其他条件均相同的环境中,测定结果如图所示。 (1) 光照强度为150 lx时,B组幼苗光合作用强度 (填“大于”“等于”或“小于”)呼吸作用强度,此时叶绿体中的ADP的移动方向是 。 (2) 如果在光照强度为300 lx的条件下培养这两组幼苗,则这两组幼苗的生长速度理论上 (...
【单选题】女,32岁。咳嗽、间断咯血3周伴低热、乏力、纳差、进行性消瘦。胸部X线片示右肺上叶虫蚀样空洞。患者最可能的诊断是
A.
浸润性肺结核
B.
干酪性肺炎
C.
肺脓肿
D.
肺癌
E.
支气管扩张
【简答题】对于作用于物体上的主动力,若其合力的作用线在摩擦角以内,则不论这个力有多大,物体一定保持平衡,这种现象称为 。
【单选题】女,32岁。咳嗽,间断咯血3周伴低热、乏力、食欲缺乏、进行性消瘦,胸部X线片示右肺上叶虫蚀样空洞,该患者最可能的诊断是
A.
浸润性肺结核
B.
肺癌
C.
肺脓肿
D.
肺囊肿合并感染
E.
支气管扩张
【判断题】观众在不同舞蹈场中欣赏同一舞蹈得到不同的思想和感受。()
A.
正确
B.
错误
【判断题】若作用在物体上的主动力的合力的作用线落在摩擦锥以内,则无论主动力的合力有多大,物体始终保持平衡。
A.
正确
B.
错误
【简答题】患者术前出现右下腹疼痛和肠梗阻的可能原因是什么?
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