__________ (常言道), the more haste, less speed.

A．he was unkind to the nurses
B．he ignored the importance of mothering to the infant
C．he wanted to prove that children are born with the ability to speak
D．he wanted to see if the children would die before they reached the age of one

A．they were not made from vegetables
B．there was not much oxygen in them
C．nowhere could they be treated except in the treatment plants at sewage works
D．their elements could not be broken down into various substances of which they were made