A.on a weekend night in summer B.on a weekend afternoon in summer C.on a weekend night in winter D.on a weekday afternoon in spring
单项选择题If the first high tide takes place at 1:00A.M., the next high tide will probably take place at ()
A. 7:20 A.M. B.8:00 A.M. C.1:45 P.M. D.high noon
单项选择题Which of the following factors will not affect the time of the tide()
A.The position of the sun and the moon. B.The mass of the moon. C.The wind. D.All of the above mentioned factors.