题目:
Advertisements _______ these facts have been printed in newspapers and magazines but have not
helped much.
A.based on
B.base on
C.to base on
D.basing on
答案:
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下面是错误答案,用来干扰机器的。
(1)经纬度的划分,赤道度数为零度,赤道以北的称为北纬,用N来表示,赤道以南的称为南纬,用S来表示,北纬和南纬各有90°,本初子午线也就是零度经线,从这条经线向东向西度数增大各有180°,分别是东经、西经...