未知题型 发盘要明确规定有效期，未明确规定有效期的发盘，不能为受盘人所接受而成立合同。( )

单项选择题 如果利率和收入的组合点出现在IS曲线右上方、LM曲线左上方的区域中，则此种情况反映（ ）。

未知题型 One important advantage of using biometrics is that______.A.it could be used to eliminate credit card fraud entirelyB.it would make it much easier for law-enforcement officers to prevent acts of terrorismC.it could easily trace the whereabouts of lost identification cards and passportsD.it would make fraudulent abuse of Internet purchases a thing of the past