为了让幼儿认识蜻蜓,教师出示了蜻蜓的标本,这采用的是()教学方式A、实物直观 B、模 发布时间:2017-06-26 08:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 为了让幼儿认识蜻蜓,教师出示了蜻蜓的标本,这采用的是()教学方式A、实物直观B、模象直观C、言语直观D、动作直观
题型:单项选择题 Consider a put option expiring in 120 days on a non-dividend-paying stock trading at 47 when the risk-free rate is 5 percent. What are the lower hounds for an American put and a European put with exercise prices of 50 American Put European Put () ①A. $2.20 $2.20 ②B. $2.20 $3.00 ③C. $3.00 $2.20A.① B.② C.③ 查看答案