问题详情

Which of the following may be concluded from the information presented in the passage？
A．Some coast lines do not have two tides each day.
B．Tides usually rise to the same level day after day.
C．Tides are not affected by the shape of a coast line.
D．The sun has as much effect on tides as does the moon.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！