海船船员考试
单选题A large group of stars revolving around a center is known as a（）.A clusterB showerC constellationD galaxy
题目
cluster
shower
constellation
galaxy
相似问题和答案
第1题：
There might be a massive black hole at the center of our galaxy______(swallow)up stars at a very rapid rate.
swallowing[解析] 存在be动词，又非被动，所以用-ing形式There be+v-ing。
第2题：
I’m glad ____________ to look around your research center.
A、to allow
B、having allowed
C、to be allowed
D、being allowed
第3题：
Text 2 To understand how astrology works, we should first take a quick look at the sky. Although the stars are at enormous distances, they do indeed give the impression of being affixed to the inner surface of a great hollow sphere surrounding the earth. Ancient people, in fact, literally believed in the existence of such a celestial sphere. As the earth spins on its axis, the celestial sphere appears to turn about us each day, pivoting at points on a line with the earth's axis of rotation. This daily turning of the sphere carries the stars around the sky, causing most of them to rise and set, but they, and constellations they define, maintains fixed patterns on the sphere, just as the continent of Australian maintains its shape on a spinning globe of the earth. Thus the stars were called fixed stars.
The motion of the sun along the ecliptic is, of course, merely a reflection of the revolution of the earth around the sun, but the ancients believed the earth was fixed and the sun had an independent motion of its own, eastward among the stars. The glare of sunlight hides the stars in daytime, but the ancients were aware that the stars were up there even at night, and the slow eastward motion of the sun around the sky, at the rate of about thirty degrees each month, caused different stars to be visible at night at different times of the year.
The moon, revolving around the earth each month, also has an independent motion in the sky. The moon, however, changes its position relatively rapidly. Although it appears to rise and set each day, as does nearly everything else in the sky, we can see the moon changing position during as short an interval as an hour or so. The moon's path around the earth lies nearly in the same plane as the earth's path around the sun, so the moon is never seen very far from the ecliptic in the sky. There are five other objects visible to the naked eye that also appear to move in respect to the fixed background of stars on the celestial sphere. These are the planets Mercury, Venus, Mars, Jupiter, and the Saturn. All of them revolve around the sun in nearly the same plane as the earth does, so they, like the moon, always appear near the ecliptic. Because we see the planets from the moving earth, however, they behave in a complicated way, with their apparent motions on the celestial sphere reflection both their own independent motions around the sun and our motion as well.
第26题：The ancient people believed that ________.
[A] the earth was spinning on the axis of the sky
[B] the sky was a hollow sphere spinning around the earth
[C] the patterns of stars on the sky would never change
[D] the stars around the sky were not stationary
根据第一段最后两句话，我们可以看出古人认为是地球的转动带动了群星的转动，而事实上群星在天空中是恒定的。于是，正确答案应为C。
第4题：
Laying out a line in successive circles flat on deck with the bitter end in the center is known as ______.
A.coiling
B.faking
C.flemishing
D.Lining
第5题：
When the________is large, the ship is stiff;and when it is small,she is tender.
A.GM
B.Free surface
C.Longitudinal center of gravity
D.transverse center of gravity
第6题：
The circulation around a low pressure center in the Northern Hemisphere is ______.
A.counterclockwise
B.variable
C.clockwise
D.Anticyclonic
北半球低压中心周围气旋方向是逆时针的旋转的。
第7题：
When hosts place dishes on the table, they will arrange the main course at the center with the other dishes______ placed around them.
A、evenly
B、even
C、odd
D、oddly
第8题：
According to the passage which of the following is true?
[A] A fixed star refers a star that is always stationary on the sky.
[B] Scientists can tell the motion of the earth from the motions of other five planets.
[C] Ancient people had scanty knowledge about the movement of the stars.
[D] All the stars on the sky can be seen all the year around.
第9题：
A slow and easy motion of a vessel in a seaway is an indication of a ______．
A.Small GM
B.Low center of gravity
C.Stiff vessel
D.Large GZ
第10题：
Early Ideas about the Universe
1 Early man got his ideas about the universe by looking at the stars as you do.He
observed carefully,and learned many things about the sun,the moon,and the stars.
2 Suppose you were asked to collect evidence about the sun as early man did.You might
go out morning after morning and see it come up in the east.Even on cloudy mornings,you
would observe that the darkness goes away and the world becomes light.You might not see
the sun but would be sure it is there,because you notice that the earth warms up.As you
continued,the sun climbs higher in the sky each day during part of the year. It stays in the
sky longer. The earth gets warmer. Things begin to grow. It is spring and then summer.
3 After a while the sun stays in the sky for shorter and shorter periods.Many plants begin
to die.Leaves fall.Winter comes.Year after year this is repeated and you cannot tell
exactly why it happens.But you realize that the sun seems to make the difference.
Primitive（原始的）man felt that since the sun was so powerful it must be a god. It may
seem silly to us now to worship（崇拜）a sun-god, but primitive man was right about the
importance of the sun to life on earth.
4 You have been told that the world is round.But suppose no one had ever taught you
that the world was like a huge ball.Would you have ever thought of it yourself?You cannot
see the curve（曲线）of the earth at once. You would have no idea of how big it was.
That's why early man believed that the earth was small and flat.Such ideas appeared from
the evidence they had.
5 If you watch the stars night after night,you will see them rise and set.As you look at
the sky,it is not difficult to imagine that you are in the center of a vast collection of twinkling
（闪烁）lights. Some early astronomers（天文学家）believed the sky was a crystal shell or
series of crystal shells,one inside the other. They believed this because that is what the
night sky looked like.For many centuries,men believed that the earth was the center of
the universe and that the sun,the moon,and the stars circled around it.
A:he did not observe the sun carefully enough
B:he could not see its curve
C:the sun,the moon and the stars seemed to move around it
D:the earth circles around the sun
E:it looked like that at night
F:it has power over life on earth