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  3. Natural history fans will probably be familiar with the nine seasons of the

Natural history fans will probably be familiar with the nine seasons of the

游客2023-10-15  61
问题     Natural history fans will probably be familiar with the nine seasons of the Life series made by British broadcaster and naturalist David Attenborough. Famous for his hushed, yet enthusiastic delivery and his ability to find any sort of plant or animal interesting, he is one of the most enduring presences on UK television. In a career spanning more than sixty years, Attenborough has been a key witness to the development of the wildlife documentary.

    When Attenborough’s career began in 1952, people’s attitude towards nature was very different. Everybody thought that animals were to be tracked, captured, tied up and brought back home to be gawped at. As a typical naturalist of the age, Attenborough admits to being no different from the rest. He is known to have done a sequence with an undersized crocodile, filming it up close so that it appeared to be bigger, and jumping on it to give the false impression of a fight. But Attenborough is by no means proud of his actions.
    In addition to this change of attitude towards nature, Attenborough has also seen a leap in the technology used to film wildlife documentaries. He started his career in broadcasting when those people lucky enough to own a television possessed a very basic black and white set. The images were captured with a lightweight, wind-up camera, which was positively primitive compared to the technology used to film his latest series. New cutting-edge 3D technology has been used to capture mesmerizing images. The pictures more than compensate for the difficulty of transporting the equipment—it takes two or three men to carry each 3D camera.
    However, improvements in technology have not been the most important development in the last six decades. During this period, a number of scientific revolutions have changed our perspective on the natural world. One of the new concepts is continental drift, an idea which helps explain the variation in the plants and animals on different continents. Another is the discovery of the structure of DNA, which has completely changed the way we see the world. David Attenborough has responded to these new theories by traveling to every conceivable part of the planet to find evidence to support them. He has also interviewed many of the scientists behind them in his documentaries.
    Unfortunately, there is also a negative side to the changes that Attenborough has witnessed over the years. Today, wildlife documentaries are more about the importance of conserving nature rather than purely showing the wonders of the living world. This is because these marvels are being destroyed at an alarming rate. In their films, naturalists like Attenborough want to inform people about the state of the world in the hope that a worldwide protest will slowly grow, with younger people wanting something to be done to protect the planet. "The truth is: the natural world is changing.
    And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it. "
Questions 66 to 70
Answer the following questions with the information given in the passage. [br] What does the word "them" in the last sentence of Paragraph 4 refer to?
选项
答案 New theories of continental drift and the discovery of the structure of DNA．
解析 (“Them”代指上文提到的两种我们对自然世界的两种新观点。文中提到“One of the newconcepts is continental drift”，“Another is the discovery of the structure of DNA”，所以“them”代指的就是这两种观点。)
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