单选题 There is little reason to believe that the United States will ______ from its stated goal of regime change in Iraq.
A. back down B. blow off C. pop up D. step up

【正确答案】 A

【答案解析】[解析] A项“back down放弃，让步”符合题意，如：He has backed down from the position he took last week．(他已放弃他上星期所采取的立场。)其他三项“B项blow off吹掉，放出；C项pop up突然出现；D项step up提升”都不正确。本题空格处是说放弃制定的目标。因此A项为正确答案。