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题型:单选题 题类:常考题 难易度:普通

江苏省靖江市2015-2016学年八年级下学期期末测试

People are starting to use energy from the sun, wind and water because they cost very ________ and will never ________.       

A、few; run out B、low; be run out C、much; be run out D、little; run out
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