46 According to the passage, what does a brown dwarf refer to?
(A)A bright star
(B)A star eight times larger than the sun
(C)A dim mass with no internal reactor
(D)A star with fusion reactions going
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統計: A(21), B(40), C(145), D(28), E(0) #659796
統計: A(21), B(40), C(145), D(28), E(0) #659796