12.In the diurnal type of tidal oscillation, the alternate rise and fall of
sea level, a single high water and a single low water occur __ tidal day.
(A)each
(B)each of the
為啥要選A不能選B
是因為選B的話,day要加s嗎?
tkx
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 219.81.163.85