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[主观题]二、简答每题 6 分共 30 分

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1. 27．大量研究认为，作为人生不可避免的一种状态，过强过久的会影响人的学习、工作和生活，会威胁人的身心健康，甚至造成疾病。
2. Passage Three When you stretch out in the sun you can do one of the three things: you can use no sun tan oil, an ordinary sun tan oil; or Bergasol. If you don't use any sun tan oil when you're in the sun, you will burn surprisingly quickly. If you use an ordinary sun tan oil, you will protect your skin to a lesser or greater degree.How much protection depends on the "protection-factor number" on the bottle. Some oils block out so many of the sun's rays and you can stay in the sun all day without burning but you won't go very brown,either. Bergasol will protect your skin like an ordinary sun tan oil. It also has a tan accelerator that speeds up the rate at which the sun activates the skin cells that produce melanin(黑色素). It is melanin that gives the skin its brown colour. Bergasol enables you to go brown faster,am as the days pass the difference will become more obvious.Unfortunately, this special formulation isn't Cheap to prepare.So Bergasol is rather more expensive than ordinary sun tan oil. However, the price looks more attractive as you do. Bergasoi It makes you go brown faster Protection Many people imagine that "cover-up" means you don't get a tan. Nothing to show for your holiday. Not so. With "cover-up", you can get brown if you want to. The point of "cover-up" is to protect your skin from the harmful rays of the sun which, according to the experts ,make your skin look older. That's what Solex Cover-up is all about--protection for your skin. It has a Sun Protection Factor 8, which makes it suitable for anyone. Find out how it works for you by consulting the Solex Sun Chart. On sale wherever Solex is. With Solex Cover-up, you can tan as slowly as you like. As gently as you like. And with much less chance of peeling. Your tan will look better. Your skin will stay young longer. Solex Gentle tan.., full protection
3. 可持续发展包括两层含义，一是人类要发展，要满足人类的发展要求，二是不能损害自然界支持__________的生存能力。
4. 21. The sun sends out huge amounts of energy, not only to Earth, but to all other planets in the solar system and directly into space. The source of all that energy is nuclear fusion (核聚变) occurring at the sun’s core. The Large Helical Device being developed at the Ministry of Educational Institute for Fusion Science (NIFS) is essentially an “artificial sun” that aims to reproduce this nuclear fusion on Earth. “Nuclear fusion is a reaction in which nuclei of light atoms such as hydrogen combine to form nuclei of heavier atoms such as helium (氦). If we can utilize the huge amounts of energy released by this reaction, nuclear fusion will then constitute a completely new, clean and never ending source of energy,” says NIFS Director Atsui Iiyoshl. In many respects, fusion is far superior to the various conventional energy sources currently in use. Fusion seems to have tremendous potential as a new source of energy. But to produce fusion reactions on Earth, it is necessary to meet a set of critical plasmatic (等离子区) conditions, including ultra-high temperatures of 100 million degrees or so centigrade - a state that refuses to imagine. To meet this challenge, Japanese scientists have come up with their own unique helical device that is particularly safe and is suitable for continuous operation. The large Helical Device now being developed is expected to be completed by the end of next year, with experiments scheduled to start at the beginning of 1998.(10分)21.1 The phrase “artificial sun” in the first paragraph probably means “________”.(2分)A. a man-made sun B. NIFSC. the sun’s energyD. fusion science
5. 当待排序序列中记录的关键字基本有序或记录个数较少时，则最好的排序方法是( )

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