The longest total solar eclipse (日全食) of the 21st century took place in China and some other countries in Asia on July 22, 2009.
Total solar eclipses of such a long time are very rare (稀罕的).
Think about what happened, one Shanghai resident (居民) said, “It’s like magic,
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使短文意思通顺，内容完整。
| A．so it’s a very special opportunity |
| B．When it took place |
| C．different people had different feelings |
| D．The solar eclipse could be seen in more than 40 cities in China |
| E．We can experience but once in a life time |
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It can be hard to believe that it is just an illusion (错觉) when the moon has a “changing” size, but it is true. You can actually test it yourself and even catch it with a camera.
People mainly notice the moon looking bigger when it is full and near the horizon (地平线).
There are several explanations that sounds reasonable but wrong for the moon illusion.
It’s easy to test the moon, illusion, and you can do it yourself. Next time you see the moon looking bigger than usual, bold out your hand with a straight arm.
| A．The moon is always changing its shape. |
| B．Such as the idea that on some nights the moon really is closer. |
| C．Then close one eye and see which finger just covers the moon. |
| D．So when the moon rises next to a far house or a mountain, the moon looks huge. |
| E．This is because your mind senses the size of an object by comparing it with other things. |
| F．Actually, the moon is so far away that no matter where you are on the earth, it always looks the same size. |
【推荐2】How many things can you see in the night sky? A lot! On a clear night you can see the moon, some planets, and thousands of sparking（闪烁的）stars.
You can see even more with a telescope. You might see that many stars look larger than others. You might see that some stars that look white are really red or blue. With bigger and bigger telescopes you can see more and more objects in the sky. And you can see those objects in more and more detail.
But scientists believe there are some things in the sky that we will never see. We won’t see them with the biggest telescope（望远镜）in the world on the clearest night of the year. That’s because they’re invisible. They’re the mysterious dead stars called black holes.
You might find it hard to imagine that stars die. After all, our sun is a star. Year after year we see it up in the sky, burning brightly and giving us heat and light. The Sun certainly doesn’t seem to be getting old or weak. But stars do burn out and die after billions of years.
As a star’s gases（气体）burn, they give off light and heat. But when the gases run out, the star stops burning and begins to die.
So next time you look up at the night sky, remember: there’s more in the sky than we can see!
根据短文内容选择最佳答案
1. The underlined word “invisible” in the passage means“________”in Chinese.
| A．听不见的 | B．看不见的 | C．摸不着的 |
| A．a planet | B．a sky | C．a star |
| A．give off heat | B．get weak | C．run out |
| A．The sun certainly seems to be getting old and weak. |
| B．We might see that some stars that look white are really red and blue with a telescope. |
| C．We might see that many stars look larger than others with a telescope |
| A．How stars burn out | B．What dead stars are | C．How we can see more stars |
| Amazing Space | |
 | Curiosity, NASA’s Mars rover (探测器), recently took the world by surprise. It took a picture of a small “flower” while it was exploring the surface of Mars. Clearly, it’s not an actual flower. But it could be a rock that had been created a long time ago. Back then, the Red Planet possibly had water on its surface. The effort of the rover could help answer the question of whether life ever existed on Mars and understand when Mars might have been most suitable to host life. |
 | Saturn’s (土星) beautiful rings which are made of ice and rocks won’t last forever. Scientists say that they are slowly breaking apart and will totally disappear in about 300 million years. The rings now may be 10 — 100 million years old. According to The Atlantic, 10 tons of “ring matter” fall into Saturn every second. They all get pulled by Saturn’s gravity. Jupiter (木星), Uranus (天王星) and Neptune (海王星) also have ring systems. Saturn has the largest rings, though — the others’ rings aren’t as easy to see, they may have had bigger rings in the past. |
| A．Three. | B．Four. | C．Five. | D．Six. |
| A．The two pictures were both taken by NASA’s Mars rover. |
| B．The ring systems of Jupiter, Uranus and Neptune are easy to see. |
| C．There is no doubt that Mars had water on its surface long ago. |
| D．The beautiful rings of Saturn will disappear because of the gravity. |
| A．There is a real flower in the picture. |
| B．The picture was taken by accident. |
| C．The “flower” proves that there were lives existing on Mars. |
| D．The picture will help us have a better understanding of Mars. |
| A．By offering numbers. | B．By asking questions. |
| C．By giving examples. | D．By making comparisons. |
| A．compare Mars with Saturn | B．show the new discoveries of space |
| C．introduce the changes of the two planets | D．encourage us to protect the planet we live |
