A:terrifying; terrified
B:terrifying; terrifying
C:terrified; terrified
D:terrified; terrifying
—yes, I'm afraid I really_____.
在平面直角坐标系中,点A、B的坐标分别为(a,0),(0,b),其中a,b满足 a−2b−18 +|2a﹣5b﹣30|=0.将点B向右平移26个单位长度得到点C,如图①所示.