单项选择题
Neap tides occur when the（）.
A.Moon is in its first quarter and third quarter phases B.Sun and Moon are on opposite sides of the Earth C.Moon's declination is maximum and opposite to that of the Sun D.Sun and Moon are in conjunction
单项选择题 Neap tides occur only（）.
单项选择题 Neap tides occur（）.
单项选择题 A wave entering（）is likely to produce bores．
