_______ the same mistake again made his parents unhappy; ______ by his parents, he left ______ .

A．His being made; criticizing; disappointed

B．He has made; criticized; disappointed

C．He had made; criticized; disappointing

D．His making; criticized; disappointed

对鉴别急性肾炎和慢性肾炎无意义的是()

A．有无水肿

B．低蛋白血症和贫血程度

C．少尿与血BUN、Cr升高

D．肾脏大小

E．眼底有高血压视网膜动脉硬化及絮状渗出物