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题目：
选择题
17世纪后的国际贸易和金融中心是：
- A. 英国的伦敦
- B. 荷兰的阿姆斯特丹
- C. 美国的纽约
- D. 意大利的罗马
答案：
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By about A. D. 500 the Mound Builder culture was declining, perhaps because of attacks from other tribes or perhaps because of severe climatic changes that undermined agriculture. To the west another culture, based on intensive agriculture, was beginning to flourish. Its center was beneath present day St. Louis, and it radiated out to enclose most of the Mississippi watershed, from Wisconsin to Louisiana and Oklahoma to Tennessee. Thousands of villages were included in its orbit. By about A. D. 700 this Mississippian culture, as it is known to archaeologists, began to send its influence eastward to transform. the life or most of the less technologically advanced woodland tribes. Like the Mound Builders of the Ohio region, these tribes, probably influenced by Meso-American cultures through trade and commerce, built gigantic mounds as burial and ceremonial places. The largest of them, rising in four terraces to a height of one hundred feet, has a rectangular base of nearly fifteen acres, larger than that of the Great Pyramid of Egypt. Built between A. D. 900 and 1100, this huge earthwork faces the site of a palisaded(用栅栏围起的)Indian city which contained more than one hundred small artificial mounds marking burial sites. Spread among them was a vast settlement containing some 30,000 people by current estimations. The finely crafted ornaments and tools recovered at Ca-hokia, as this center of Mississippi culture is called, include elaborate ceramics(陶瓷制品), finely sculpted stonework, carefully embossed and engraved copper and mica(云母)sheets, and one funeral blanket fashioned from 12,000 shell beads. They indicate that Cahokia, was a true urban center, with clustered housing, markets, and specialists in tool-making, hide-dressing patting, jewelry-making, weaving, and salt-making.What is the main topic of the passage? ______A．The Mississippian culture.B．The decline of Mound Builder culture.C．The architecture of Meso-American Indians.D．The eastern woodlands tribes.
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乡镇工业劳动卫生特点是（）
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监理的任务是（）
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关于卢梭，下列说法错误的是（）
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农业生产力渗透性要素
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善能清热泻火，滋阴润燥的药物组是（）。
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食品安全风险隐患排查工作应按照（）的闭环管理工作程序开展。
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减压机构的功用是在柴油机（）、（）或进行技术保养时，使部分或全部（）打开，降低气缸内压力，以便转动曲轴。
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具体一份公文使用哪个文种，应当根据（）来确定。
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低压聚乙烯(单位体积的重量比为0.95)（ ）