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(24), B(41), C(153), D(29), E(0) #659796

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#2556380
They have tried to f...
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#5155644
A brown dwarf is a d...
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