若m2+2m+n2-6n+10=0,则m=______n=______.
原式可化为(m+1)2+(n-3)2=0,∴m+1=0,n-3=0,即m=-1,n=3.
—What is the matter with Alice?
—She failed the English test. You'd better go and ______. [ ]
A. cheer up her
B. to cheer up her
C. cheer her up
D. to cheer her up
儿童感染华支睾吸虫的严重后果是()
A.肝脾肿大
B.侏儒症
C.消化不良症
D.精神发育迟滞
E.营养不良