题目

下列有关实验操作和现象、结论都正确的是（） 选项 实验操作和现象 实验结论 A 常温下，将大小、形状形态的锌和铝分别加入到等体积 的浓硫酸中，观察到前者反应速率快 锌比铝活泼 B 向某溶液中加入盐酸酸化的氯化钡溶液，产生白色沉淀 该溶液中一定含有 C 将盐酸滴入碳酸钠溶液中，产生气泡 非金属性：Cl大于C D 向某溶液中加入氢氧化钠溶液丙加热，产生的气体能使湿润的红色石蕊试纸变蓝 该溶液中一定含有 A . A B . B C . C D . DCA new commodity brings about a highly profitable, fast-growing industry,urging antitrust（反垄断）regulators to step in to check those who control its flow. A century ago, the resource in question was oil. Now similar concerns ares being raised by the giants（巨头）that deal in data, the oil of the digital age. The most valuable firms are Google, Amazon, Facebook and Microsoft. All look unstoppable.Such situations have led to calls for the tech giants to be broken up. But size alone is not a crime. The giants’ success has benefited consumers. Few want to live without search engines or a quick delivery. Far from charging consumers high prices, many of these services are free (users pay, in effect, by handing over yet more data). And the appearance of new-born giants suggests that newcomers can make waves, too. But there is cause for concern. The internet has made data abundant, all-present and far more valuable, changing the nature of data and competition. Google initially used the data collected from users to target advertising better. But recently it has discovered that data can be turned into new services: translation and visual recognition, to be sold to other companies. Internet companies’ control of data gives them enormous power. So they have a “God’s eye view” of activities in their own markets and beyond.This nature of data makes the antitrust measures of the past less useful. Breaking up firms like Google into five small ones would not stop remaking themselves: in time, one of them would become great again. A rethink is required—and as a new approach starts to become apparent, two ideas stand out.The first is that antitrust authorities need to move form the industrial age into the 21st century. When considering a merger(兼并), for example, they have traditionally used size to determine when to step in. They now need to take into account the extent of firms'data assets(资产) when assessing the impact of deals. The purchase price could also be a signal that an established company is buying a new-born threat. When this takes place, especially when a new-born company has no revenue to speak of, the regulators should raise red flags.The second principle is to loosen the control that providers of on-line services have over data and give more to those who supply them. Companies could be forced to consumers what information they hold and how many money they make form it. Govemments could order the sharing of certain kinds of data, with users' consent.Restarting antitrust for the information age will not be easy But if govemments don't wants a data oconomy by a few giants, they must act soon. 1.Why is there a call to break up giants?A. They have controlled the data marketB. They collect enormous private dataC. They no longer provide free servicesD. They dismissed some new-born giants2.What does the technological innovation in Paragraph 3 indicate?A. Data giants’ technology is very expensiveB. Google’s idea is popular among data firmsC. Data can strengthen giants’ controlling positionD. Data can be turned into new services or products 3.By paying attention to firms’ data assets, antitrust regulators could .A. kill a new threat B. avoid the size trapC. favour bigger firms D. charge higher prices4.What is the purpose of loosening the giants’ control of data?A. Big companies could relieve data security pressure.B. Governments could relieve their financial pressure.C. Consumers could better protect their privacy.D. Small companies could get more opportunities.