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單項選擇題

A plane that cuts the Earth’s surface and passes through the poles will always form（）.

A.the equator
B.a loxodromic curve
C.a small circle
D.a meridian

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單項選擇題

A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）

A.Great circle
B.Equator
C.Small circle
D.Meridian

單項選擇題

A parallel of latitude other than the equator is a（）.

A.great circle
B.loxodromic curve
C.small circle
D.gnomonic curve

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