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.

A. shop
B. live
C. come
D. study

A. concerned
B. ignored
C. expected
D. noticed

A. 它指国家司法机关和国家授权的专门机关对违法者依其所应当承担的法律责任而采取的惩罚措施
B. 法律制裁是以确定违法行为为前提的
C. 法律责任是追究法律责任的实际结果
D. 法律制裁不是基于违法行为而产生的

A. 恢复权利性措施
B. 对构成违法、犯罪者实施的惩罚性措施
C. A和B
D. 刑事制裁措施