电子商务业务系统包括支付型业务和______两类。
参考答案：非支付型业务
下列体现了对生命正确的认识是（ ）
①人生苦短，及时行乐
②生命，那是自然给人类去雕琢的宝石
③生命在于过程，而不是终点
④应该笑着面对生活，不管一切如何
A．①②③
B．②③④
C．①③④
D．①②④
William Sidney Porter, known as O. Henry, is most famous for ______.
A. his poems B. his playsC. his short stories D. his novels
