A.give up
B.take over .
C.bring back
D.pass down
第1题
It can beinferred from the last paragraph that brown dwarfs.
Agive off infrared radiation.
B are power stars like the sun.
Cbecome massive and active
D are invisible to the WISE telescope.
第5题
A.resorted to
B.succeeded to
C.took over
D.left over
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