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【题目】The energy program ______ at reducing our dependence on fossil fuels has made considerable breakthroughs in the past decades.

A.aimB.aimedC.being aimingD.to aim

【答案】B

【解析】

考查过去分词作后置定语。句意:旨在减少我们对化石燃料依赖的能源计划在过去几十年取得了重大突破。固定搭配:be aimed at旨在,为了。此处是过去分词作后置定语,故选B

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