It is said that sixty percent of all energy ________ in the world today is bein
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It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.A.produced | B.producing | C.to produce | D.having produced |
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答案
A |
解析
A 考察非谓语动词。据说现在世界上生成的所有能源的百分之60都是以废热的形式浪费掉了,produce和句子谓语is之间满意连词,故使用非谓语形式。Produce和逻辑主语energy之间逻辑上构成被动关系。用过去分词做后置定语。故A正确。 |
举一反三
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