The government must be very ______ about setting a policy, making no decision until they are quite sure it is the right one.A.particularB.concernedC.cautiousD.certain
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C解析试题分析：句意：政府在制定政策时一定要谨慎，直到完全确定是正确的才能做出决定。be particular about对……挑剔；be concerned about关心；be cautious about对某事谨慎；be certainabout有把握。根据句意故选C。考点：考查动词短语辨析。
点评：本题难度适中。动词短语辨析是近几年高考常考的内容，需要考生平时加强背诵短语的意义及用法，命题者还考查学生对语境的理解。即学即练：It's ______that every effect must have a cause.A. particular B. concerned C. cautious D. certain解析：D。句意：无疑，每个结果必定有其原因。