初始余额录入后，其数据是否正确由（）。 A.系统自动检验B.手工进行检验C.不必

The title "Light Night, Dark Stars" means______

A．the night sky is brightly lit up and stars are black.

B．lights appear at night and stars are seen in the dark.

C．city lights at night illuminate stars in the sky.

D．city lights illuminate the night sky, making stars invisible.

35 The title "Light Night, Dark Stars" means

A the night sky is brightly lit up and stars are black.

B lights appear at night and stars are seen in the dark.

C city lights at night illuminate stars in the sky.

D city lights illuminate the night sky, making stars invisible

The title "Light Night, Dark Stars" means______

A．the night sky is brightly lit up and stars are black.

B．lights appear at night and stars are seen in the dark.

C．city lights at night illuminate stars in the sky.

D．city lights illuminate the night sky, making stars invisible.

quot;？

A.The night sky is light colored and stars are black

B.Lights appear at night and stars are seen in the dark

C.City lights illuminate the night sky and make stars invisible

D.City lights at night illuminate stars in the sky

Which of the following is closest in meaning to the title "Light Night, Dark Stars" ？

A．The night sky is light colored and stars are black.

B．Lights appear at night and stars are seen in the dark.

C．City lights illuminate the night sky and make stars invisible.

D．City lights at night illuminate stars in the sky.

e sky from the bottom of a switching pool. Even on the clearest night the earth's dense atmosphere【C2】______ 30 percent of the light from any star. Air turbulence may cause stars to twinkle.【C3】______ a telescope the stars seem to jump around dizzily.

Because the moon has no atmosphere, astronomers are looking forward to【C4】______ an observatory there. On the moon, there will be no clouds to【C5】______ the view. The sky will appear dark【C6】______ , so astronomers can work twenty-four hours a day. Because there is no air turbulence, the stars will appear【C7】______ through a telescope.

【C8】______ the moon is relatively near the earth, moon-based astronomers will see the stars in the familiar patterns known on【C9】______ . They will not need new star maps of the sky. Stars【C10】______ the moon will appear to move very slowly. Because the earth【C11】______ on its axis once every twenty-four hours earth based astronomers see the stars hurry 【C12】______ the sky each night. The moon rotates on its axis only once a month. To astronomers on the moon, the stars will appear to stand【C13】______ still. Moon-based astronomers will have much more time【C14】______ their telescopes and take time-exposure photographs.

On the earth, mechanical radio noises【C15】______ the airwaves and interfere with the【C16】______ of radio signals from certain stars. A radio telescope【C17】______ on the far side of the moon will be permanently protected from such 【C18】______ .

It won't be easy to put telescopes on the moon. However, astronomers are【C19】______ the job can be done. They are convinced that the moon is an【C20】______ place to set up an observatory.

【C1】

A．something like

B．something else

C．something more

D．something of

32 Light pollution occurs when

A artificial lights illuminate the night sky.

B the moon lights up the night sky.

C too many stars are visible in the night sky

D streetlights are turned off.

further supported by observations of beetles rolling under a completely overcast sky in the same arena. Under these conditions, when neither moonlight nor the stars were visible in the sky, the beetles took 117.4 ± 28.0 s (n = 6) to exit the arena. …These findings further support our hypothesis that dung beetles can use the starry sky to orientate.

A、Scarabaeus satyrus fails to orient without celestial clues

B、Scarabaeus satyrus uses stars of night sky for orientation

C、Scarabaeus satyrus uses milky way for orientation

D、Future experiments

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 reflecting both their own independent motions around the sun and our motion as well.

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

file 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, maintain fixed patterns on the sphere, just as the continent of Australia 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 and 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 it 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 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 reflecting both their own independent motions around the sun and our motion as well.

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