梅毒螺旋体雅司亚种可引起与梅毒类似的临床表现,但不是性病。()
参考答案:对
决策支持系统(DSS)的理论核心是决策模式理论,提出决策模式理论的是著名科学家
A.N,Goodman
B.James Martin
C.F Codd
D.Simon
—Did you lend him some money?
—No. It ________ that I didn’t have any extra money with me.
A.turned
B.looked
C.happened
D.appeared