A:①②③
B:①②④
C:①③④
D:②③④
下列有关日本的叙述,正确的是( )
在△ABC中,角A,B,C的对边分别为a,b,c,若a=1,∠B=45o,△ABC的面积S=2,则c边长为____ ,b边长为____ .
— He is such a kind and generous man that we all him very much.