若a2+b2-2ab+|b-1|=0,则a=______,b=______.
原方程可变形为:(a-b)2+|b-1|=0,
即a-b=0,b-1=0,
∴a=b=1.
Please give the book ________ him. [ ]
A. for
B. to
C. at
天竺黄的功效是()
A.清热化痰,定惊利窍
B.清热化痰,除烦止呕
C.清热化痰,宽胸散结
D.清热化痰,清心定惊
E.清热化痰,开郁散结