Read the passage.
excerpt from "Marie Curie and the Discovery of Radioactivity" by Mara Rockliff
To the Austrian mine owners who had sent the pitchblende ore, it was just dirt. After all, they had already taken out the valuable part—the metallic element called uranium—and dumped what was left over in a nearby pine forest. If a pair of eccentric French scientists wanted them to scoop up the worthless stuff and ship it, the mine owners were happy to oblige.
It could be inferred that the word pitchblende in the paragraph means "a black mineral deposit."
Which context clue best helps confirm this meaning of the word pitchblende?
"and dumped what was left over in a nearby pine forest"
"ore, it was just dirt"
"the mine owners were happy to oblige"
"they had already taken out the valuable part—the metallic element"
Answers: 2
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Do you know the correct answer?
Read the passage.
excerpt from "Marie Curie and the Discovery of Radioactivity" by Mara Rockliff
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