题目

________ did the United States launch the war against Iraq? A.For what purpose B.For which purpose C.For the purpose of                   D.On purpose   答案:A  for what purpose“为了……目的”,表疑问;for the purpose of“为了……的目的”;on purpose“故意地”。题意:美国为了什么目的发动了伊拉克战争?  利用人工合成的昆虫性外激素可以诱捕相应的农业害虫.(判断对错)
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