Please give me a difficult 100 sentence modification! !

1. Thanks to the successful return of Shenzhou-1 and Shenzhou-4 unmanned spacecraft, China has joined the ranks of space development powers, which is also a sign that China's national defense forces are becoming stronger and stronger.

2. The high-speed maglev train is completely off track. It has no wheels and transmission mechanism, and uses electromagnetic force to realize the suspension, guidance, driving and braking of the train.

3. According to the data, the tail feathers of long-tailed chickens growing in the wild can grow about one meter each year, while the life span of long-tailed chickens can be eight to ten years, so the longest tail feathers can exceed seven meters.

4? Building a hydropower station in Nvshan, a very special mountain canyon, will cause far less environmental problems, ecological problems and immigration problems than building a hydropower station in other densely populated river areas.

In this coal mine accident, he was the only survivor of all the miners who died. He told reporters and the miners' families about the shocking scene at that time.

Kunming in March is the best season of the year, and a large number of Chinese and foreign tourists will come here at this time.

7. Although the lineup of this China women's volleyball team has changed several times in eight years, as a group, it has moved the Chinese people as strongly as in the period of "five consecutive championships".

8. China Telecom, China Mobile and China Unicom will jointly build 10 long-distance transmission optical cable in Sichuan earthquake-stricken area. This is the first time that the Ministry of Industry and Information Technology and the State-owned Assets Supervision and Administration Commission have jointly issued relevant emergency notices to realize the co-construction and sharing of infrastructure.

9. Our school's fund-raising activities for Sichuan earthquake-stricken areas have received positive responses from many school teachers and classmates, and raised more than 30,000 yuan in less than one day.

10. Experts attending the Urban Development Forum generally believe that the research on urbanization in China mainly focuses on the prediction of the speed and trend of urbanization, while the negative impact on public policies in the process of urbanization is obviously ignored.

1 1. This high platform is smooth and steep, which is very dangerous. According to the old people, no pedestrian has ever been on this high platform, and those who have been on it have never come back alive.

12. If the report submitted by Annan can be adopted, Japan is expected to gain a permanent seat. In this regard, China, South Korea and other neighboring countries, which once suffered greatly from Japanese militarism, have deep doubts.

13. The core of the image is a sentimental bird. It sings tirelessly for the wind and the land, the river and the dawn, and even dedicated its feathers to the land after death.

14. The poet wrote an old horse that was overwhelmed, but what the poet wanted to say in his heart was sympathy for the working people living under the whip and slavery and praise for their perseverance.

15. Mencius is sometimes called a "revolutionary" because of the turmoil in the Warring States period, which made him know that it is useless to restore the old country without thorough changes.

16. The 7th Organizing Committee of Chinese Writers Association held its first plenary meeting on the afternoon of June 1 12, and elected 49-year-old Tie Ning as the chairman of Chinese Writers Association, becoming the first female writer to hold this position.

17. the rover opportunity analyzed a Martian rock, and scientists found some minerals that must be formed in the presence of liquid water, such as sulfate.

18. the reform path and orientation we choose now must depend on which road can make the economy grow rapidly and alleviate various social problems at the same time.

19. Thanks to the successful return of Shenzhou-1 and Shenzhou-4 unmanned spacecraft, China has joined the ranks of space development powers, which is also a sign that China's national defense forces are becoming stronger and stronger.

20. The high-speed maglev train is completely off track during operation. It has no wheels and transmission mechanism, and uses electromagnetic force to realize the suspension, guidance, driving and braking of the train.

2 1. The data show that the tail feathers of long-tailed chickens grown in the wild can grow about one meter a year, while the life span of long-tailed chickens can be eight to ten years, so the longest tail feathers can exceed seven meters.

22. The environmental, ecological and immigration problems caused by the construction of hydropower stations in Nvshan, a very special high mountain canyon, are far less than those caused by the construction of hydropower stations in other densely populated river areas.

In this coal mine accident, he was the only survivor of all the miners who died. He told reporters and the miners' families about the shocking scene at that time.

Although the lineup of this China women's volleyball team has changed several times in eight years, as a group, it has moved the Chinese people as strongly as the "five consecutive championships" period.

25. China Telecom, China Mobile and China Unicom will jointly build 10 long-distance transmission optical cable in Sichuan earthquake-stricken area. This is the first time that the Ministry of Industry and Information Technology and the State-owned Assets Supervision and Administration Commission have jointly issued relevant emergency notices to realize the co-construction and sharing of infrastructure.

26. Our school's fund-raising activities for Sichuan earthquake-stricken areas have received positive responses from many school teachers and classmates, and raised more than 30,000 yuan in less than one day.

27. Artists can freely express their spiritual trauma and painful feelings about the current social situation and rely on art to express directly.

28. Children's enthusiasm for "animation" has promoted the development of "animation" industry in the direction of high quality, high speed and high profit, especially for businesses with keen sense of smell.

29. The protection of painted pottery cultural relics with raw lacquer as the bottom layer is a world problem, and there is no experience and technology to learn from. How to preserve the painting of Qin figurines has become a top priority.

That's all for now. You can call me for an answer.