单项选择题
"I saw Mary in the library yesterday" "You()her, she is still in hospital."
A. can't have seen B. mustn't have seen C. could not see D. must not see
单项选择题 () you have finished your work, you are free to do what you like.
单项选择题 男性，32岁。右侧肾结核无功能伴左肾严重积水，膀胱挛缩，查：血Cr800μmol/L，血红蛋白82g/L，应选择哪项处理最好（）
单项选择题 科学发展观的本质和核心是（）
