网上银行的其他风险有：（）
A.流动性风险
B.利率风险
C.市场风险
D.以上全是
参考答案：D
用反证法证明“垂直于同一条直线的两条直线平行”时，第一个步骤是______．
With his work _________, he went home happily.[ ]
A. finishing
B. to finish
C. finished
D. had finished
