A:i
B:wa
C:has bee
D:were
在△ABC中,∠A=90°,对应三条边分别为a、b、c,则a、b、c满足的关系为( )
当m=8时,执行如图所示的程序框图,输出S的值为____
— _____ Dasan is from Canada, he can speak Chinese very well. — I know he studies Chinese hard.