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Those companies knew they had a captive audience, so they bought up as many journals as they could. Journal articles aren’t interchangeable commodities like corn or soybeans—if your science supplier starts gouging you, you can’t just switch to a new one. Adding to this lock-in effect, publishing in “high-impact” journals became the key to success in science, which meant if you wanted to move up, your university had to pay up. So, even as the internet made it much cheaper to produce a journal, publishers made it much more expensive to subscribe to one.。下载安装汽水音乐对此有专业解读
熏豆腐、孔府菜一字排开，百余米的长街宴座无虚席。“人多吃着香。”来自辽宁的张丽英说，“这热闹劲儿，像我们小时候过年。”