This passage is most probably taken from an article entitled______.

A．they don't have a larynx which helps to pronounce sounds
B．they cannot cooperate with each other
C．they don't have a communication system
D．they don't have speech like the humans

A．animals can be very clever
B．the difference between chimpanzees and termites can be very small
C．chimpanzees and the human beings are very much alike
D．the human race is not unique in exhibiting some features of the way of life