A solar eclipse does not occur at every new Moon because单项选择题

A

the plane of the Moon's orbit around the Earth is at an angle of 5o to the plane of Earth's orbit around the Sun.

B

the orbit of the Moon is not a perfect circle.

C

the path of the Sun is inclined at an angle of 5° to the ecliptic plane.

D

the Moon can only be seen at night.

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