【文章內(nèi)容簡介】 , by Kimberley Hockings of Oxford Brookes University, was a 14month study of Bossou chimpanzees cropraiding, a situation in which they have to pete for rare and unpredictable , 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one ：第三篇 Giant StructuresIt is an impossible task to select the most amazing wonders of the modem world since every year more __1__ constructions are three giant structures which are worthy of our __2__ although they may have been surpassed by some more recent Petronas Twin TowersThe Petronas Towers were the tallest buildings in the world when they were pleted in a __3__ of 452 metres, the tall twin towers, like two thin pencils, dominate the city of Kuala the 41st floor, the towers are linked by a bridge, symbolizing a gateway to the American __4__ Cesar Pelli designed the of highstrength concrete, the building provides around 1，800 square metres of office space __5__ every it has a shopping centre and a concert hall at the __6__ of this impressive building include doubledecker lifts, and glass and steel MiUau BridgeThe Millau Bridge was opened in 2004 in the Tam Valley，in southern the time it was built，it was the world’s highest bridge, __8__ over 340m at the highest bridge is described as one of the most amazingly beautiful bridges in the worl was built to __9__ Millau39。s congestion congestion was then caused by traffic passing from Paris to Barcelona in bridge was built to withstand the __10__ extreme seismic and climatic , it is guaranteed for 120 years!The Itaipu DamThe Itaipu hydroelectric power plant is one of the largest constructions of its kind in the worl consists of a series of dams across the River Parana, __11__ forms a natural border between Brazil and in 1975 and taking 16 years to plete, the construction was carried out as a joint project between the two dam is wellknown for both its electricity output and its 1995 it produced 78% of Paraguay’s and 25% of Brazil’s __13__ its construction, the __14__ of iron and steel used was equivalent to over 300 Eiffel is a __15__ amazing wonder of Why India Needs Its Dying VulturesThe vultures in question may look ugly and threatening, but the sudden sharp __1__ in three species of India’s vultures is producing alarm rather than celebration, and it presents the world with a new kind of environmental __2__ The dramatic decline in vulture numbers is causing widespread disruption to people living in the same areas as the is also causing serious public health problems __4__ the Indian their reputation and appearance may be unpleasant to many Indians，vultures have __5__played a very important role in keeping towns and villages all over India is __6__they feed on dead India, cows are sacred animals and are __7__ left in the open when they die in their thousands upon thousands every disappearance of the vultures has __8__ an explosion in the numbers of wild dogs feeding on the remains of these dead are fears that rabies may __9__ as a this terrifying disease may ultimately affect humans in the region, since wild dogs are its main could also spread to other animal species, causing an even greater problem in the need for action is __11__, so an emergency project has been launched to __12__ a solution to this serious vulture are trying to identify the disease causing the birds，deaths and, if possible, develop a vulture __13__ were first noticed at the end of the 1980s in population survey at that time showed that the three species of vultures had declined __14__ over 90 per three species are now listed as “critically endangered”.As most vultures lay only single eggs and __15__ about five years to reach maturity, reversing their population decline will be a long and difficult Better Solar Energy Systems: More Heat, More Light Solar photovoltaic thermal energy systems, or PVTs, generate both heat and electricity, but __1__ now they haven’t been very good at the heatgenerating part pared to a standalone solar thermal ’s because they operate at low temperatures to cool crystalline silicon solar cells, which lets the silicon generate more __2__ but isn’t a very efficient way to gather ’s a problem of solar hotwater systems can harvest much more energy than a solarelectric system at a substantially lower it，s also a space problem：photovoltaic cells can take up all the space on the roof, leaving little room for thermal a pair of studies, Joshua Pearce, an associate professor of materials science and engineering, has devised a __5__ in the form of a better PVT made with a different kind of research collaborators are Kunal Girotra from ThinSilicon in California and Michael Pathak and Stephen Harrison from Queen’s University, Canada.”Most solar panels are made with crystalline silicon，but you can also make solar cells out of amorphous silicon, __6__ known as thinfilm don’t create as much electricity, but they are lighter, flexible, and , because they __7__ much less silicon, they have a greener ，thinfilm silicon solar cells are __8__ to some badnews physics in the form of the StaeblerWronski effect.“That means that their efficiency __9__ when you expose them to light — pretty much the worst possible effect for a solar cell,” Pearce explains，which is one of the __10__ thinfilm solar panels make up only a small fraction of the , Pearce and his team found a way to engineer around the StaeblerWronski effect by incorporating thinfilm silicon in a new __11__ of don’t have to cool down thinfilm silicon to make it fact，Pearce’s group discovered that by heating it to solarthermal operating temperatures，near the boiling __12__ of water, they could make thicker cells that largely __13__ the StaeblerWronski they applied the thinfilm silicon directly to a solar thermal energy __14__ , they also found that by baking the cell once a day，the