“Early to bed, early to rise makes a man healthy, wealthy and wise.” This is an old English saying. Do you know what it means? It means that we must go to bed early at night and get up early in the morning. If we do, we shall be healthy, rich and clever.
Is this true? Perhaps it is. We know the body must have enough sleep. Boys and girls need eight or nine hours’ sleep every day.
Some people go to bed late at night and get up late in the morning. This is a very bad habit. Then you will not think or do your work well. Of course, you can’t be healthy, wealthy or wise.
When we get up early in the morning, we can go out and do morning exercises. Exercise means doing things with the body. Walking, running jumping, swimming, and playing ball games are all exercise. If we don’t exercise, our body will become weak.
Exercise helps the blood (血液) to move around inside our body. Blood takes food to all parts of our body.
Our body also needs air to breathe. Without air, we will die. We must have lots of clean fresh air if we want to be healthy. That is why many people like to go out to do morning exercise.
1. From the passage we know that it is good for our health to ____ .
| A．eat a lot | B．go to bed early | C．get up late | D．go to bed late |
| A．More than ten hours | B．Over eleven hours. |
| C．Less than seven hours. | D．Eight hours or so. |
| A．eat more food | B．sleep more | C．get up late | D．take enough exercise |
| A．Don’t go to bed until twelve o'clock.. |
| B．Take a walk after supper. |
| C．Run in the open air early in the morning. |
| D．Climb hills for half an hour early in the morning. |
| A．Jumping. | B．Swimming. | C．Riding. | D．Running. |
2 . Astronomy (天文学) is the oldest science known to man. Thousands of years ago man looked at the stars and wondered about heavens (天堂). But the six planets that he could see with his eyes alone limited man.
The Greeks studied astronomy over 2,000 years ago. They could see the size, color, and brightness of a star. They could see its place in the sky. They watched the stars move as the seasons changed. But the Greeks had no tools to help themselves study the heavens.
Each new tool added to the field of astronomy helped man reach out into space. Until there were telescopes (望远镜), man did not know much about the moon. He did not know that the planet called Saturn (土星) had rings around it. His sight was so limited that he could not see all the planets. In the early 1700s, people thought there were only six planets. Pluto (冥王星), the last of the nine planets to be discovered was seen until 1930.
Before the spectroscopes (分光镜), man didn’t know what kind of gas was in the sun or other stars, without radio telescopes (射电望远镜), we did not know that radio noise came from far in space.
Today, astronomy is a growing science. We have learned more in the past fifty years than in the whole history of astronomy.
1. Thousands of years ago, man watched ____ with his eyes.| A．the moon | B．the stars | C．the universe | D．all the planets |
| A．know what the stars were made of | B．not see their places in the sky |
| C．help themselves study the heavens | D．watch the stars move as the seasons changed |
| A．telescopes | B．spectroscopes | C．radio telescopes | D．spaceships |
| A．the 1700s | B．2,000 years ago | C．1930 | D．thousands of years ago |
| A．50 years ago | B．90 years ago | C．In the early 1700s | D．Over 2,000 years ago |
