A-A+
According to the new theory where did ocean w
问题详情
According to the new theory, where did ocean water come from？
A．Disintegrating comets.
B．Gases in the atmosphere.
C．Underground water that rose to the surface.
D．Water vapor.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：本题考查事实。根据原文“Cometscontainwater.”及后面提到的“Whentheycollidewiththeatmosphere,theybreakup.Andthewatertheycontainrainsdowntoearth.Oceanwatercamefromthatrain.”可知当彗星与地球外气层相碰撞时，彗星中包含的水分会落到地球上来。因此选项A为正确答案。
