在以下逻辑覆盖中测试用例设计难度最大的是（）
A.语句覆盖
B.判定覆盖
C.条件组合覆盖
D.条件覆盖
参考答案：C
I hesitated for a moment before choosing, otherwise, I the mistake. [ ]
A. had made
B. made
C. would make
D. would have made
心力衰竭患者水肿通常首先出现在（）
A.眼睑
B.双手
C.颜面
D.身体最低部位
E.腹部
