下列哪项是慢性肾炎的临床特点()
A.间断反复水肿
B.常年蛋白尿,但多数可自愈
C.双侧肾大小不一致
D.肾功能具有缓慢恶化的趋势
E.没有高血压
参考答案:D
试比较x2+y2与xy+x+y-1的大小.
It's raining now. Don't ______ close the window! [ ]
A. forget
B. remember
C. remember to
D. forget to