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lunar


having to do with the moon

Very few humans have walked on the lunar surface.

lunar

proposed


suggested a plan or an idea

Vanessa’s teacher proposed an easier way to solve the math problem.

proposed

credible


believable or trustworthy

Abby had to make sure she used credible sources in her report.

credible

skeptical


not easily convinced; having doubts about something

David’s teacher was skeptical when he told her that his dog had eaten his homework.

skeptical

barrier


something that blocks progress or movement

After Jackie Robinson broke baseball’s color barrier, many more African-Americans were given the opportunity to play in the major leagues.

barrier
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