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【简答题】
现代宇宙学认为,在宇宙的大量活动星系的中心普遍存在着 ,这些黑洞中质量较小的只相当于太阳质量的100万倍左右,而较大的其质量可达太阳质量的十亿倍以上。
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参考解析：
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【单选题】Compared with their cosmologist(宇宙学家) colleagues, cosmogonists(星源学家) can sound a little old-fashioned. Edgar Allen Poe turned to the mysteries of cosmogony in an 1848 public lecture, just reprinted by...
A.
the Sun’s equator lies in the planetary plane
B.
the Sun leans over because of loss of mass
C.
the Sun and the planets have different origins
D.
the Sun took shape somewhere in the Galaxy
【单选题】Compared with their cosmologist(宇宙学家) colleagues, cosmogonists(星源学家) can sound a little old-fashioned. Edgar Allen Poe turned to the mysteries of cosmogony in an 1848 public lecture, just reprinted by...
A.
he sounds a bit old-fashioned
B.
he learns from Edgar Allen Poe
C.
he studies the origin of the whole Universe
D.
he tries to explain how the Solar System formed
【单选题】Compared with their cosmologist(宇宙学家) colleagues, cosmogonists(星源学家) can sound a little old-fashioned. Edgar Allen Poe turned to the mysteries of cosmogony in an 1848 public lecture, just reprinted by...
A.
cosmogonists have more disagreements about the distant outer space
B.
astronomers have already obtained full knowledge about Uranus and Neptune
C.
there exist a lot of mysteries for cosmogonists in inner space
D.
cosmogonists are often reluctant to go home for the existence of deeper family mysteries
【单选题】Compared with their cosmologist(宇宙学家) colleagues, cosmogonists(星源学家) can sound a little old-fashioned. Edgar Allen Poe turned to the mysteries of cosmogony in an 1848 public lecture, just reprinted by...
A.
The Solar System is completely flat.
B.
Mercury and Pluto are not in the same plane with other planets.
C.
The planets formed from a nebular disc orbiting the Sun.
D.
The Sun formed out of the same nebular disc with its planets.
【单选题】Passage Four Compared with their cosmologist(宇宙学家) colleagues, cosmogonists(星源学家) can sound a little old-fashioned. Edgar Allen Poe turned to the mysteries of cosmogony in an 1848 public...
A.
the Sun’s equator lies in the planetary plane
B.
the Sun leans over because of loss of mass
C.
the Sun and the planets have different origins
D.
the Sun took shape somewhere in the Galaxy