Lethe was a gentle and silent stream whose waters could eliminate care and help the shades forget all the past events.

The three rivers that must be crossed by the spirits of dead people in the realms of Hades were（ ）， Cocytus and Styx。 A: Lethe B: Acheron C: Elysium D: Phlegethon

诸神若发不可反悔的誓言，必须在冥界的_____河边发誓。（ ） A: Lethe 忘川 B: Acheron 怨川 C: Styx 怒川 D: Phlegethon 火河