—What do you think of the blind man?

—I’ve never seen a man with         sense of touch.

A．the better

B．a better

C．a good

D．the best

锅炉的灰渣经（）进行破碎后，掉入（）被水冲至灰渣池中，然后由渣浆泵经压力输灰管送往灰场。答：