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  3. The passage gives a general description of the benefits and potential problems of a hydrogen economy. If the storage problem is

The passage gives a general description of the benefits and potential problems of a hydrogen economy. If the storage problem is

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问题 The passage gives a general description of the benefits and potential problems of a hydrogen economy.
If the storage problem is ______ and ______, a network of hydrogen stations and the transportation infrastructure will have to develop around it.
选项
答案solved; standardized
解析 根据题干将查找内容定位在How do you store and transport the hydrogen?部分，
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大学英语四级

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