\middle of the century, this century, the impact will be very obvious. And by the end of the century, in many areas, 100 percent of this bamboo will be gone. And that's really a dramatic impact that people have not realized\the long-term solution and creating new panda habitats is another. It may also be possible to introduce new species of bamboo that are heat-resistant. But unfortunately, pandas are notoriously picky eaters and may reject even a slight change to their diet. Audioscript:
There are roughly 1 600 pandas living in the wild, mainly in the mountain forests of western China. Bamboo is their staple food. And they eat up to 38 kg a day. But some species of the plant take many years to grow, which means they don't adapt to climate change. Scientists are now predicting that an increasing temperature of even 2°C will kill off the species the pandas need to survive. One of the study's authors is Professor Jack Lu of Michigan State University. \very obvious. And by the end of the century, in many areas, 100 percent of this bamboo will be gone. And that's really a dramatic impact that people haven not realized\the long-term solution and creating new panda habitats is another. It
may also be possible to introduce new species of bamboo that are heat-resistant. But unfortunately, pandas are notoriously picky eaters and may reject even a slight change to their diet.
B The following report is about shrinking fish found in the sea as a consequence of global warming. While listening for the first time, note down as many key words as you can in the left-hand column. After the second listening, fill in the gaps in the summary in the right-hand column with the help of the notes.
Notes Summary 参考答案：projections The global temperature rises have fish global temperature rises unexpectedly large impacts on fish body size metabolic rates oxygen 2050 shrink in size by between 14 and 24% body size . As ocean temperatures increase, the body temperature and metabolic rates of the fish also increase. As a result, fish use more oxygen to stay alive. It is predicted that up to 2050, fish will shrink in size by between 14 and 24 percent, with the the Indian and Atlantic Indian and Atlantic Oceans worst Oceans the Poles the North Sea underestimate affected. The warming waters are likely to drive fish more towards the Poles. The case studies on North Atlantic cod and haddock show that North Atlantic cod and these fish displayed greater decreases haddock in actual body size than the models predicted. Audioscript:
Although projections of global temperature rises show relatively small changes at the bottom of the oceans, the resulting impacts on fish body size are \research. As ocean temperatures increase, so do the body temperatures and metabolic rates of the fish. This means they use more oxygen to stay alive and, according to the researchers, they have less avalilable for growth.
They've calculated that up to 2050, fish will shrink in size by between 14 and 24 percent, with the Indian and Atlantic Oceans worst affected. The warming waters are also likely to drive fish more towards the poles, leading to smaller species living in areas like the North Sea.
According to the scientists, their models may underestimate the potential impacts. When they looked at case studies involving North Atlantic cod and haddock, they found that recorded data on these fish showed greater decreases in actual body size than the models predicted.
Part V Do you know ...?
catalog：目录，目录册，目录簿 inhabit v.：居住
the planet：这个行星（地球） estimate：估计，预测;报价， exceeding：胜过
in the form of parks：在公园的形式下 wildlife refuge：野生动物保护区 reserve：保护区，保存，储备 aquatic animal：水生动物 crayfish：淡水螯虾（肉）;龙虾 mussel：贻贝，蚌类;淡菜
In general, an endangered species is one that's in immediate danger of becoming extinct. Its numbers are usually low, and it needs protection in order to survive.
Listen to some facts about endangered species. Pay special attention to the numbers. Audioscript:
● Scientists have cataloged more than one and one-half million of
the species that exist on Earth today. By some recent estimates, at least 20 times that many species inhabit the planet. ● Up to 100 species become extinct every day. Scientists estimate
that the total number of species lost each year may climb to 40,000 by the year 2000, a rate far exceeding any in the last 65 million years.
● Around the world more than 3 500 protected areas exist in the
form of parks, wildlife refuges and other reserves. These areas cover a total of about 2 million square miles (5 million square km, or 3% of our total land area).
● Today, more than 200 animal species in the United States are
classified as endangered. More than 1,000 animal species are endangered worldwide.
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