正确答案: D

金银的天然特性最适合充当货币材料

题目：金银所以能固定地充当一般等价物，是因为：

解析：[答案] D

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举一反三的答案和解析：

[单选题]最终结束十六国割据局面的北魏皇帝是

太武帝

[单选题]党的十七大报告指出，我国新时期最显著的成绩是

改革开放 B． 快速发展

[单选题]With the open-access publishing model, the author of a paper is required to

cover the cost of its publication.

[单选题]已知市场组合的期望报酬率和标准差分别为15%和20%，无风险报酬率为8%，某投资者除自有资金外还借入20%的资金，将其所有资金用于购买市场组合，则总期望报酬率和总标准差为（ ）

16.4%和24%

[单选题]女，22岁，左颈下及腋下发现无痛性肿块3月余，体检发现左侧颈部、锁骨上和腋窝等处，有肿大的孤立的无痛性肿大淋巴结，以下哪项发现最有助于提示此患者是霍奇金病，而非非霍奇金淋巴瘤?

发病早期全身剧烈瘙痒

[单选题]Text 3Investment in the public sector, such as electricity, irrigation, public services and transport (excluding vehicles, ships and planes) increased by about 10%, although the emphasis moved to the transport and away from the other sectors mentioned. Trade and services recorded a 16%～17% investment growth, including a 30% increase in investment in business premises. Industrial investment is estimated to have risen by 8%. Although the share of agriculture in total gross in vestment in the economy continued to decline, investment grew 9% in absolute terms, largely spurred on by a 23% expansion of investment in agricultural equipment. Housing construction had 12% more invested in it in 1964, not so much owing to increased demand, as to fears of new taxes and limitation of building.

people saved less

解析：答案：A