题目内容
The socio-ecological view of health recognizes that lifestyle. habits and the provision of
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Which of the following best describes the structure of the passage？
Conventional wisdom has it that concern for the environment is a luxury only the rich world can afford; that only people whose basic needs for food and shelter have been met can start worrying about the health of the planet. This survey will argue that developing countries, too, should be thinking about the environment. True, in the rich countries a strong environmental movement did not emerge until long after they had become industrialized, a stage that many developing countries have yet to reach. And true, many of the developed world's environmental concerns have little to do with immediate threats to its inhabitants' wall-being. People worry about whether carbon-dioxide emissions might lead to a warmer climate next century, or whether genetically engineered crops might have unforeseen consequences for the ecosystem. That is why, when rich world environmentalists' campaign against pollution in poor countries, they are often accused of naivety. Such countries, the critics say, have more pressing concerns, such as getting their people out of poverty.
But the environmental problems that developing countries should worry about are different from those that western pundits have fashionable arguments over. They are not about potential problems in the next century, but about indisputable harm being caused to conventional wisdom, solving such problems need not hurt economic growth; indeed dealing with them now will generally be cheaper than leaving them to cause further harm.
In most developing countries pollution seems to be getting worse, not better. Most big cities in Latin America, for example, are suffering rising levels of air pollution. Populations in these countries are growing so fast that improvements in water supply have failed to keep up with the number of extra people. Worldwide, about a billion people still have no access to clean water, and water contaminated by sewage is estimated to kill some 2 million children every year. Throughout Latin America, Asia, Africa, forests are disappearing, causing not just long-term concern about climate change but also immediate economic damage. Forest fires in Indonesia in 1997 produced a huge blanket of smog that enveloped much of South-East Asia and kept the tourists away. It could happen again, and probably will.
Recent research suggests that pollution in developing countries is far more than a minor irritation: it imposes a heavy economic cost. A Word Bank study put the cost of air and water pollution in China at ＄ 54 billion a year, equivalent to an astonishing 8% of the country's GDP. Another study estimated the health costs of air pollution in Jakarta and Bangkok in the early 1990s at around 10% of these cities' income. These are no more than educated guesses, but whichever way the sums are done, the cost is not negligible.
It is conventionally thought that ______.
What do students do when they are "test obsessed"？
Passage Two
Eye contact is a nonverbal (非语言的) technique that helps the speakers "sell" thier ideas to an audience. Besides its persuasive powers, eye contact helps hold listeners' interest. A successful speaker must maintain eye contact with an audience. To have good relation with listeners, a speaker should maintain direct eye contact for at least 75 percent of the time. Some speakers focus only on their notes. Others look over the heads of their listeners. Both are likely to lose audience's interest and respect. People who maintain eye contact while speaking, whether from a podium or from across the table, are regarded not only as exceptionally friendly by their target but also as more believable and earnest.
To show the power of eye contact in daily life, we have only to consider how passers-by behave when their glances happen to meet on the street. At one extreme are those people who feel obliged to smile when they make eye contact. At the other extreme are those who feel uncomfortable and immediately look away. To make eye contact, it seems, is to make a certain link with someone.
Eye contact with an audience also lets a speaker know and monitor (观察) his listeners. It is, in fact, essential to analyze an audience during a speech. Visual feedback (视觉反馈) from the audience can indicate that a speech is boring, that the speaker is talking too much about a particular point, or that a particular point requires further explanation. As we have pointed out, visual feedback from listeners should play an important role in shaping a speech as it is delivered.
What does the writer believe about a speaker's eye contact？
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