Point
2.00
Question Text
Biro’s first commercially-produced pen
Quiz Section
Position
4.00
Question Type
Multiple Choice
Master uuid
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Keywords: Biro’s first commercially-produced
Information: “since the pen needed to be held in a vertical position for the ink to come out.”
“Cây bút phải được cầm dọc thẳng đứng thì mực mới có thể chảy ra” = “only worked if used in a certain way”