题目

阅读下列短文，从下面每小题所给的A、B、C、D四个选项中选出最佳选项 Don't throw away your old phone. You are actually throwing away real gold! Smartphones contain many useful things such as gold, silver and copper（铜）. People can recycle them to make new electronics（电子器件）. But many people may not know this. In Australia alone there are more than 25 million unused mobile phone lying around, Sydney Morning Herald reported. The gold in these phones can add up to a value of more than $80 million (542 million yuan). There are about 6 billion（十亿）smartphone users around the world, who change their phones once every 25 months on average. In China, people generate（产生）1 billion old phones every year, according to New Express Daily. However, it's not easy to get the useful things out of the phones. Smartphones have not only useful things, but also harmful materials. Guiyu, a small town in Shantou, Guangdong, is one of the world's biggest dumping grounds（垃圾倾倒场）for electronic waste, reported by Reuters. Many recycling centres in Guiyu simply break the old electronics by hand and don't think about the pollution it causes. According to a local government report, 81 percent of children in Guiyu are harmed by lead（铅）poisoning. Veena Sahajwalla, a professor at Australia's University of New South Wales, has made a mini factory. It makes smartphone recycling cleaner and easier. The mini factory is very small and easy to move around. It breaks the phones and automatically（自动地）removes the useful parts. That way, humans do not get poisoned. （1） What can people do with old phones? A . Clean the city's roads. B . Put them away. C . Make gold rings. D . Make new electronics. （2） How many old phones do people generate in China every year? A . 25 million. B . 80 million. C . 1 billion D . 6 billion. （3） On average, how often do smartphone users change their phones? A . Twice every 18 months. B . Once every 25 months. C . Twice a month. D . Once a month. （4） The kids in Guiyu get lead poisoning because______. A . Guiyu has the world's biggest lead factory B . Guiyu uses machines to recycle electronics C . Guiyu is polluted by electronic waste D . Guiyu people like to throw away old phones （5） What would be the best title for the text? A . Smart phones in different countries. B . Find gold in your old phone. C . Prevent being harmed by environmental pollution. D . New electronics made from old ones. 答案： D C B C C

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