The Solar System
Estimated Level: A1 Based on CEFR distribution
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CEFR B1 Words (20)
giant
B1
comets
B1
Lemma: comet
debris
B1
exploration
B1
fascinating
B1
Lemma: fascinate
flows
B1
Lemma: flow
mars
B1
Lemma: mar
medium
B1
neighborhood
B1
orbiting
B1
Lemma: orbit
origins
B1
Lemma: origin
outer
B1
possibility
B1
raged
B1
Lemma: rage
relatively
B1
spectacular
B1
unique
B1
volcanic
B1
warmth
B1