消化性溃疡（）
A.呕血伴规律性腹痛
B.强烈呕吐后继而呕血
C.呕血伴腹痛、黄疸、寒战与高热
D.呕血伴全身皮肤出血
E.鲜血样大便
参考答案：A
In my opinion, what matters is not how much a present costs, _____what it means to you. [ ]
A. however
B. nor
C. either
D. but
中国证监会派出机构可根据（）原则，要求期货公司按周或按日编制并报送风险监管报表。
A．保守性
B．审慎监管
C．可靠性
D．实质重于形式
