2. 职称英语
  3. What proportion of the world’s electricity supply is provided by hydroelectric p

What proportion of the world’s electricity supply is provided by hydroelectric p

游客2023-09-15  58
问题 What proportion of the world’s electricity supply is provided by hydroelectric power? [br] Exploiting hydroelectric power resource can cost billions of dollars, for hydroelectric plants normally have ______ .
选项
答案 (very)high building costs
解析 本题考查开发水力发电花费巨资的原因，是对水力发电未来的展望，故将答案出处定位到末段。该段第三句提到Exploiting this resource would involve an investment of billions of dollars, since hydroelectric plants normally have very high building costs. 明确指出通常是因为修建成本很高，其中题干中的for=since，故答案为(very)high building costs。
转载请注明原文地址:http://tihaiku.com/zcyy/3016262.html
相关试题推荐
随机试题
最新回复(0)