1     Beijing Opera is our national play, You can learn the music, dance and art when you enjoy Beijing Opera.     2     它拥有着悠久的历史并且全世界闻名。

In order to make Beijing Opera wider and make the middle school students love and develop(发展) our Chinese culture, our country makes a project. That is to take Beijing Opera into students’ music classes.     3     现在很多的学生可以在课堂上欣赏京剧。

    4     However, only a few people think it important and useful for middle school students. Most people think that students are very busy with their lessons and it's a waste of time to learn Beijing Opera. Most people are afraid that some music teachers know little about Beijing Opera and its history. Most parents always ask “Is it useful for children's future to lean Beijing Opera?"

    5     We need a long way to go to make Beijing Opera come into classes.

4 . The job of a scientist is to find out the truth in the field of science.     1    . It is a challenging profession. Scientists usually have to do thousands of experiments in order to prove something. Although they are often disappointed if they fail,     2    .但是他们大多数人绝不放弃.

My next door neighbour is a scientist. He studies radiation.     3    .他总是在实验室里工作，trying to figure out all the mysteries that make him puzzled. When I met him the other day, he had just come back from work, looking excited.     4    . He told me he had had a breakthrough. He sounded so thrilled. Then I noticed that he was wearing shoes that did not match.     5    . He must have been working too hard to notice! I think it’s good to do a job that you are interested in. Otherwise you will get bored easily.

5 . The Chinese language differs from Western languages     1    in that, instead of an alphabet, it uses characters which stand for ideas, objects or deeds. Chinese words are formed by putting together different characters. In many cases, a single character can also make up a word. The history of the Chinese language can be examined by looking at     2     这些汉字是如何发展的．

Chinese writing began thousands of years ago. According to an ancient story, a man named Cang Jie invented Chinese writing. After seeing the tracks of animals in the snow and observing that the appearance of each one was different,     3     he had the idea that he could use different shapes to represent different objects. The first Chinese characters were drawings of physical objects. Some characters have been simplified and others have been made more difficult over time. However, as a whole, the characters have developed from drawings into standard forms.     4     并非所有的汉字都从物体的图画演变而来.     5     Sometimes to express ideas, some characters were made by combining two or more characters together．