If the first high tide takes place at 1:00 A.M., the next high tide will probably take place at ______.

A．age and birth
B．family and neighbourhood
C．training and practice
D．personality and character

A．The police records were collected from a large number of cities and towns.
B．The pattern of crime varies from year to year.
C．Our cycles of learning are different from those of wrong action.
D．The police are not sure that humidity and murder are related.