国务院 * * 温 * * 在十届全国人大三次会议上作政府工作报告时说，进一步加强对政府及其部门的监督。
（1）加强对政府权力的制约和监督的主要依据和意义是什么？
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（2）我国已初步建立了行政监督体系，其中包括哪些监督形式？（至少四种）
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