A uniformed maid, whom Nicole estimated to be ______ the same age as herself, emerged from the house and crossed the porch to greet her warmly in Spanish.

A．Many people don’t think they have a good memory.
B．People cannot understand foreign speeches.
C．Humans lay emphasis on writing for communication.
D．Humans are different from dogs in having sense of history.

A．get the message when the owner is trying to say something
B．make gestures which both dogs and humans can perform
C．often go up to their owner and sit down in front of him
D．develop both skills of reading and writing very well