【阅读理解】On a September day in 1991, two Germans were climbing the mountains between Austria and Italy．High up on a mountain pass，they found the body of a man lying on the ice. At that height(10,499 feet，or 3,200 meters)，the ice is usually permanent，but 1991 had been an especially warm year．The mountain ice had melted more than usual and so the body had come to the surface．It was lying face downward. The skeleton(骨架)was in perfect condition, except for a wound in the head. There was still skin on the bones and the remains of some clothes．The hands were still holding the wooden handle of an ax and on the feet there were very simple leather and cloth boots． Nearby was a pair of gloves made of tree bark(树皮)and a holder for arrows.What can be inferred from paragraph 2?

【阅读理解】We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted. Because we can feel that things are heavy, we think of "weight" as being a fixed quality in an object, but it is not really fixed at all. If you could take a one-pound packet of butter 4, 000 miles out from the earth, it would weigh only a quarter of a pound.We find it hard to break free from ideas connected with living on the earth because ______.

【阅读理解】Mobile phones should carry a label if they proved to be a dangerous source of radiation, according to Robert Bell, a scientist. And no more mobile phone transmitter towers(发射塔) should be built until the long-term health effects of the radiation they emit(放射) is scientifically evaluated, he said. "Nobody’s going to drop dead overnight but we should be asking for more scientific information," Robert Bell said at a conference on the health effects of low-level radiation. "If mobile phones are found to be dangerous, they should carry a warning label until proper shields can be devised," he said.According to Robert Bell, if mobile phones prove to be dangerous to people's health ______.

【阅读理解】In the digital realm, the next big advance will be voice recognition. The rudiments are already here but in primitive form. Ask a computer to “recognize speech,” and it is likely to think you want it to “wreck a nice beach.” But in a decade or so we’ll be able to chat away and machines will soak it all in. Microchips will be truly embedded in our lives when we can talk to them. Not only to our computers, we’ll also be able to chat with our automobile navigation systems, telephone consoles, browsers, thermostats. VCRs, microwaves and any other devices we want to boss around.The techniques of voice recognition ______.

【阅读理解】The ISU won’t finally approve the new system until it meets in June but already UK Sport, the British Government’s sports body, has expressed reservations. "I remain to be convinced that the random selection system would offer the guarantees that everyone concerned with ethical sport is looking for", says Jerry Bingham, UK Sport’s head of ethics(伦理).What does Jerry Bingham express by saying "I remain to be convinced"?

【阅读理解】As well, there are 2,000 transmitter towers around Australia, many in high density(密度) residential areas. For example, Telstra, Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community. The radiation emitted from these towers may have already produced some harmful effects on the health of the residents nearby.Many transmitter towers were built ______.

【阅读理解】We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted. Because we can feel that things are heavy, we think of "weight" as being a fixed quality in an object, but it is not really fixed at all. If you could take a one-pound packet of butter 4, 000 miles out from the earth, it would weigh only a quarter of a pound.How much would four pounds of tea weigh if it was taken 4,000 miles out from the surface of the earth?

【阅读理解】The value of childhood is easily blurred(变得模糊不清) in today's world. Consider some recent developments: The child-murderers in the Jonesboro, Ark. schoolyard shooting case were convicted and sentenced. Two boys, 7 and 8, were charged in the murder of an 11-year-old girl in Chicago.The two boys in Chicago were _____.

【阅读理解】Redemption (拯救) is a practical necessity. How can value be restored to young lives distorted (扭曲) by acts of violence? The boys in Jonesboro and in Chicago will be confined in institutions for a relatively short time. Despite horror at what was done, children cannot be —— dealt with as adults, not if a people wants to consider itself civilized. That's why politicians' cries for adult treatment of youthful criminals ultimately miss the point.According to politicians, when children commit crimes, they should be treated in the same way as _____.

【阅读理解】Two thousand years ago the Chinese had already developed a working compass. A piece of lodestone (天然磁石) would be cut into the shape of a ladle (长柄勺). Placed on a stone board with a smooth surface, the lodestone would move round until the "handle" of the ladle pointed south while the bulk (主体) of the ladle was attracted to magnetic north. This interestingly shaped device is mentioned in a book from about 80. Other ancient books may have dated it as far back as the fourth century Jade (玉石) finders played an important role in the invention of the "ladle". They travelled great distances to look for jade. In order not to lose directions, they would take a "ladle" with them.Which of the following about the ladle-shaped compass is true?