【導(dǎo)讀】Whatcastingoffhis. Asaconsequence,heeventuallydidit!himtoadvance.

　　

【正文】 ainthe two strands of the double helix are antiparallel, which means that they run in opposite directions. This was indeed a breakthrough in the study of how geic material passes from generation to generation. [26] Once the model was established, its mere structure hinted that DNA was indeed the carrier of the geic code and thus the key molecule of heredity, developmental biology and evolution. Then, human became curious about the code. So scientists spare no efforts in determining the sequence of chemical base pairs which make up DNA and identifying the map approximately 20,000–25,000 genes of the human genome from both a physical and functional standpoint. The Human Genome Project was an international group working on that. It was a 13year project coordinated by the . Department of Energy and the National Institutes of Health. Such a big project couldn’t be finished by only one country, even the USA. During the early years of the HGP, the Welle Trust (.) became a major partner。 additional contributions came from Japan, France, Germany, China, and others. In other words, the project was finished by a group of countries. Hardly can individuals finished the whole project. 其他例子： Assignment: Are there benefits to be gained from avoiding the use of modern technology, even when using it would make life easier? [27] Dry cleaning is any cleaning process for clothing and textiles using an anic solvent rather than water. Drycleaning saves time and labor。 items that may be damaged by water and soap or detergent are safe. It seems that drycleaning will be so popular that people won’t use hands or ordinary washing machine to clean clothing and textiles any more. However, the fact is that most people choose to use hands and ordinary washing machines. That is because Perchloroethylene (―perc‖), the solvent used by most dry cleaning establishments, which is known to disrupt the central nervous system and contaminate human breast milk. Released into the air, perc can harm the health of dry cleaning workers and of people who live near dry cleaners. A small amount of the chemical also remains in drycleaned clothing and can contaminate consumers’ homes. Besides, when released into the air, perc can contribute to smog when it reacts with other volatile anic carbon substances. As a result, more and more people avoid using drycleaning to ensure the health of the Earth and human beings. After all, paring with damaging some textiles, the loss of health of both the Earth and human is much more terrible. [28] Here is another convincing example: human cloning. After the cloned sheep Dolly, cloning technology is developing. Having tried so many creatures, some scientists begin to think about human. Human cloning is a controversial topic, for there are so many benefits and uncertainties. Human cloning may save one’s life and create passedaway celebrities. However, most people oppose human cloning for following reasons. Human cloning will bring moral problems and raise many ethical questions。 those who want to clone passedaway celebrities can only clone their bodies, not their souls and spirits。 creating life is the duty of nature, and we must not interfere with that task because we can not understand the extremely sophisticated relationships among lives that are defined by nature。 saving one life by cloning while thousands of varied, lovable children are dying of starvation every day makes no sense. Comparing advantages and disadvantages, most people realize that being away from human cloning means safety, respect to life and saving time, labor and money. Assignment: Should heroes be defined as people who say what they think when we ourselves lack the courage to say it? [29] Bai Yansong, an ethnic mongol, is a prominent Chinese news anchor and journalist affiliated with China Central Television, China39。s national television work, and is known for his articulate and confident style. He is as renowned and influential in China as Dan Rather and Larry King in the US. Bai request his remark to ―be true, be of courage, value, and impetus‖. He is famous for his strident but rational remark. In recognition of his contribution, he got ―Best presenter award Commentary‖, and his ―News 1+1‖ got ―Best TV show of the year‖, ―Best Commentary Award program‖ in ―New Weekly‖ 2020 China TV List awards ceremony. When awarded the prizes, Bai said true word again: ―中國電視的發(fā)展取決于現(xiàn)在的既得利益者 ,當(dāng)他作為改革者推動的時候，一腔熱血，一轉(zhuǎn)身他成了既得利益者了，有權(quán)了有名了有錢了，開始保護自己的利益了。我非?？床粦T有的昨天還是一個改革者，今天一轉(zhuǎn)身就在阻攔著改革。 ‖ Words like that haven’t been said before Bai, though nearly everybody knows it. [30] Tsien Hsueshen was a scientist who made important contributions to the missile and space programs of both the United States and People39。s Republic of China. As a Chinese, he had great emotion to China. In 2020, when Premier Wen Jiabao meet Tsien, Tsien pitied that there was no tiptop talent ever since the period of the Republic of China. ―Reason why China hasn’t been well developed, you may find out that the basic problem is about China’s higher education system. None of the universities in China is set up for training scientific and technical personnel. No innovation, no great talent.‖ Tsien’s words above shocked the whole society. Everyone knows that China’s examinationoriented education system should be cancelled, however nobody said. Ever since Tisen pointed out the serious problem, more and more people have joined the discussing of the reform of China’s education. Assignment: Should people take more responsibility for solving problems that affect munities or the nation in general? [31] Here’s an example from ancient China. Yu the Great, the legendary founder of the Xia Dynasty, is best remembered for teaching the people flood control techniques to tame China’s rivers and lakes. ―Passing his own door three t