Mahatma Gandhi once said, “The greatness of a nation can be judged by the way its animals are treated.”

    There is no doubt that China is a country with high moral values. It has never attacked another country, has one of the lowest rates of violent crimes and is deeply concerned with the social and economic welfare of its people.

    But when it comes to animal rights, China may well fail Gandhi test. There are no laws against the killing of dogs and the sale of dog meat in China. In fact the serving of dog meat in Chinese restaurants has increased in recent years.

    People who eat dog meat argue that dogs have been eaten in China for thousand of years and dog meat has “health benefits”.

    There is, however, a strong argument against waiting dogs .Recently, some Chinese animal rights activists stopped a truck carrying about 500 dogs and saved the poor animals from being sold and served as food in restaurants. These people that dogs are not meant to be eaten but loved.

根据短文内容，判断以下句子的正误。

    The American literature is from the Romanticism to the Realism.

    The American Romanticism began from the end of 18th century to the outbreak of the Civil War, which is also called the American Renaissance. The period is as well as the time of American Westward Expansion. During the period, there were lots of workforces crowding to the cities, which promoted the industry.  The people found that they need their-own literature to record their experiences. So the Romanticism flourished(繁荣）.

    The Romanticism in American literature focuses on imagination and emotional factors. The American writers paid more attentions to the free expression of feelings and the characters' inner world. During the romantic period, there were many writers: Philip Freneau, William Cullen Bryant and so on.

    The Realism in American literature was from 1865 to 1914, and it takes on the American spirit, especially in American stories. The Realism against the Romanticism, advocates the people to come down to the earth and get rid of daydreams.

    During the 50 years from the Civil War to the WWI, the America had experienced a great change on many aspects, such as the politics, economy, culture and religion. It had changed the nature and the idea of the American society. The writers of new age didn't agree with the Romanticism of the old age.They were interested in real life and wanted to explain everything relating to the real life, which is to claim the objective reality, to get rid of idealism and Romanticism.

    There were 3 main writers at that time: William Peanoweils, Henry James and Mark Twain. Their writings represented the American native customs with their deep rural styles, which uncovered the people's inner life.

    Our summer vacation begins on July 15th and lasts nearly two months. Considering that my brain needs rest after a period of hard work, I, together with my family, went to our countryside, a very small farmhouse in which my grandparents used to live, to spend the summer. Obviously, life in the country is very different from that in the city.

    Early in the morning I took a walk along the field side. The air was fresh and pure. With a dog following, sometimes I ran a race in the meadows covered with tall grass. Sometimes I climbed up the hill to see the sun slowly yet steadily rise from the eastern horizon. The birds also sang restlessly among the bushes. In order to appreciate the quietness of the country, I gave myself entirely to nature, with a light heart and a happy mind.

    Sometimes in the afternoon I, together with my cousins, took a rod and went to the river to fish. It made the family happy when they saw me returning with a basketful of large fresh fish. When night came, I would sit at the door and tell the most wonderful and interesting stories to my cousins, who listened to the tale of wonder with open eyes and mouth.

    I wish I could enjoy such calm, pure and beautiful rural life forever.

    There are two main things that make aircraft engineering difficult: the need to make every component as reliable as possible and the need to build everything as light as possible. The fact that an airplane is up in the air and can't stop if anything goes wrong, makes it perhaps a matter of life or death that its performance is completely dependable.

    Given a certain power of engine, and consequently a certain fuel consumption, there is a practical limit to the total weight of aircraft that can be made to fly. Out of that weight as much as possible is wanted for fuel, radio navigational instruments, passenger seats, or freight room, and of course, the passengers or freight themselves. So the structure of the aircraft has to be as small and light as safety and efficiency will allow. The designer must calculate the normal load that each part will bear. This specialist is called the "stress man." He takes notice of any unusual stress that may be put on the part as a precaution against errors in manufacture, accidental damage etc.

    The stress man's calculations go to the designer of the part, and he must make it as strong as the stress man says is necessary. One or two small parts are always tested to prove that they are as strong as the designer intended. Each separate part is tested, then a whole assembly—for example, a complete wing, and finally the whole aeroplane. When a new type of aeroplane is being made, normally only one of the first three made will be flown. Two will be destroyed on the ground in strict tests. The third one will be tested in the air.

    When a plane has passed all the tests it can get a government certificate of airworthiness, without which it is illegal to fly, except for test flying.

    Making the working parts reliable is as difficult as making the structure strong enough. The flying controls, the electronic equipment, the fire precautions, etc. must not only be light in weight, but must work both at high altitudes where the temperature may be below freezing point and in the hot air of an airfield in the tropics.

    To solve all these problems the aircraft industry has a large number of research workers, with elaborate laboratories and test houses, and new materials to give the best strength in relation to weight are constantly being tested.

    The full moon climbs over the eastern horizon (地平线) and hangs like a huge orange globe in the sky. A few hours later, the moon is overhead but seems to have changed. The huge orange globe has become a small silver disk. What has happened? Why has the orange color disappeared? Why does the moon seem so much smaller and farther away now that it is overhead?

    The moon appears orange on the horizon because we view it through the dust of the atmosphere. The overhead moon does not really shrink (缩小) as it moves away from the horizon. Our eyes inform us that the overhead moon is farther away. But in this position the moon is actually closer to our eyes than when it is near the horizon.

    The change in size is a trick our eyes and minds play on us. When the moon is low in the sky, we can compare its size with familiar objects. It is easy to see that the moon is much larger than trees or buildings, for example. When the moon is high in the sky, however, it is hard to compare it with objects on earth. Compared to the vastness of the sky, the moon seems small.

    There is another reason why the moon seems to shrink. We are used to staring at objects straight ahead of us. When an object is difficult to see, our eyes have to try to focus on it. When we move our heads back to look up, we will try hard again. Looking at something from an unaccustomed position can fool you into believing an object is smaller or farther away than it is. However, scientists do not yet understand completely why the moon seems to shrink as it rises in the sky.

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