按发行债券时规定的还本时间，在债券到期时一次全部偿还本金的偿债方式，被称为 （)A．展期偿

The sun is bigger than ______.

A．all the stars

B．any other star

C．the moon

The sun is a star.(46)That is because it is near us; but the other stars are far away. The sun shines because it is very hot, but the moon shines because it reflects the sun&39;s light. It is like a big mirror. If we visited the moon, we should see the earth.(47).

Sometimes the earth moves between the sun and the moon. Then the earth&39;s shadow falls on the moon; no light from the sun can then reach the moon. The moon gets dark because it cannot reflect the sun&39;s light. (48).

Does the sun ever get dark during the say？ It does so when the moon hides it. Sometimes the moon goes in front of the sun. We can watch its edge when it slowly crosses the sun&39;s disc. Everything gets darker and darker; then, at last, we cannot see any part of the sun&39; s disc. The moon is hiding it completely. That is a total eclipse of the sun; sometimes only part of the sun&39;s disc is hidden; that is not a total eclipse.(49).

(50)There was a total eclipse of the moon on January 9, 2001. That event was visible from Europe, Africa and Asia. There were about 20 total eclipses of the sun between 1970 and 1999. The latest was seen on June 21 this year in Angola, Zambia, Zimbabwe, Mozambique and Madagascar.

(46)

A. Eclipses are not seen in every part of the world.

B. The earth&39;s shadow was beginning to move away.

C. We call this an eclipse of the moon.

D. It appears to be bigger than any other star.

E. It is also like a mirror and it reflects the light of the sun.

F. It is a partial eclipse of the sun.

(47)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(48)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(49)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(50)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

The sun is a star.(46)That is because it is near us; but the other stars are far away. The sun shines because it is very hot, but the moon shines because it reflects the sun&39;s light. It is like a big mirror. If we visited the moon, we should see the earth.(47).

Sometimes the earth moves between the sun and the moon. Then the earth&39;s shadow falls on the moon; no light from the sun can then reach the moon. The moon gets dark because it cannot reflect the sun&39;s light. (48).

Does the sun ever get dark during the say？ It does so when the moon hides it. Sometimes the moon goes in front of the sun. We can watch its edge when it slowly crosses the sun&39;s disc. Everything gets darker and darker; then, at last, we cannot see any part of the sun&39; s disc. The moon is hiding it completely. That is a total eclipse of the sun; sometimes only part of the sun&39;s disc is hidden; that is not a total eclipse.(49).

(50)There was a total eclipse of the moon on January 9, 2001. That event was visible from Europe, Africa and Asia. There were about 20 total eclipses of the sun between 1970 and 1999. The latest was seen on June 21 this year in Angola, Zambia, Zimbabwe, Mozambique and Madagascar.

(46)

A. Eclipses are not seen in every part of the world.

B. The earth&39;s shadow was beginning to move away.

C. We call this an eclipse of the moon.

D. It appears to be bigger than any other star.

E. It is also like a mirror and it reflects the light of the sun.

F. It is a partial eclipse of the sun.

(47)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(48)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(49)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

(50)

A. Eclipses are not seen in every part of the world. B. The earth&39;s shadow was beginning to move away. C. We call this an eclipse of the moon. D. It appears to be bigger than any other star. E. It is also like a mirror and it reflects the light of the sun. F. It is a partial eclipse of the sun.

请帮忙给出每个问题的正确答案和分析，谢谢！

e said that the sun was a god(神). They thought that he drove across the sky each day on a golden (金色的) horse.

But now we know the earth goes around the sun. Today men know how far it is for the earth to go around the sun. They tell us that the earth travels over 1000miles (英里)a minute on its way around the sun.

The sun is really a star. It is much bigger than the earth and it is very hot. Some people have been to the moon, but we know that no one can ever get to the sun. It is too hot for people to live anywhere near it. The sun is 300, 000 times heavier than the earth and more than a million(百万) times larger.

In some countries, people ______ the sun to be a god, riding a golden horse.

A．took

B．gave

C．thought

Full moons occur when ______.

A．the moon is between the sun and the Earth

B．the Earth is between the moon and the sun

C．the sun is between the Earth and the moon

D．the side of the moon facing the Earth is dark

Have you ever seen a moon that looks unbelievably big？ It hangs over the horizon like a huge？ pale hot-air balloon. Many people think of the bright full moon of autumn or the harvest moon that way—like a huge？ pale hot-air balloon. But can you always trust your eyes？

The harvest moon is the full moon on a day nearest the first day of autumn. Full or nearly full, it rises early in the evening for several nights in a row. It brings farmers well-lit evenings to harvest their crops.

The harvest moon can look huge. But does it really fill more of the sky than an ordinary full moon？

Why does the moon look bigger when it is near the horizon？ Our brains compare the size of the moon with the size of the objects we see on the horizon. We know that the distant mountains？ homes？ or skyscrapers are really very large. And？ since the moon is much farther away than is the distant landscape？ we “see the moon as being larger than it would otherwise look.”

1.To what do we compare the size of the harvest moon？

A.Mountains

B.Buildings

C.Homes

D.All of these

2.The main purpose of the article is to() .

A.inform

B.persuade

C.praise

D.convince

3.The author knew most people find the moon() .

A.mysterious

B.interesting

C.boring

D.so ordinary

4.The moon looks bigger if ().

A.it is autumn

B.it is near the horizon

C.homes are near

D.it is a clear night

5.The autumn moon______.

A.is more beautiful than it really looks

B.is the brightest object in the sky

C.rises slowly at dawn

D.helps farmers see as they harvest their crops

Spring tides occur______．

A.when the moon is new or full

B.when the moon and sun have declination of the same name

C.only when the moon and sun are on the same sides of the earth

D.at the beginning of spring when the sun is over the equator

The moon's light is from______.

A．itself

B．the cloud

C．the sun