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听力原文： Two tragedies at coal mines on opposite sides of the world remind us all how dangerous some jobs Can De.
In China last week, floodwaters from a river trapped one hundred and eighty-one miners in two mines. An official in Shandong province said Thursday that there was no hope of finding them alive.
The Crandall Canyon mine in the American state of Utah collapsed on August sixth, trapping six miners. Last week, another collapse at the mine killed three rescuers and injured six others.
Coal mining deaths have been decreasing in the United States. But last year there were forty-seven, more than double the number the year before. Twelve of the deaths resulted from an explosion at the Sago mine in West Virginia.
The Labor Department has a newly published report on work-related deaths last year in the United States. (28)The construction industry had the largest number. But the single deadliest job in the United States is commercial fisherman.
What does it mean by mentioning "opposite sides of the world" ？
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According to this news, how many people died last year in the coal mining accident in the
听力原文： (25) The world's largest drug company is embroiled in a global controversy over whether it tested an unapproved drug on sick children in Nigeria without their full understanding. The case involving Pfizer raises questions about how to protect human subjects as American companies conduct more and more drug trials around the world. VOA's Leta Hong Fincher has this report.
In 1996, a meningitis epidemic hit the Nigerian state of Kano. Researchers from the American company, Pfizer, treated 100 Nigerian children with the experimental drug, Trovan. The Nigerian government and the Kano state government are suing Pfizer over the drug trial. (26) They say it caused the deaths of 11 children and seriously disabled others.
Why is the world's largest drug company embroiled in a global controversy？
According to this news, why did so many people from all over the world travel to New York？
听力原文： Two economists did the study: Andrew Oswald of the University of Warwick and David Blanchflower at Dartmouth College. They used information collected earlier on two million people from eighty nations.
They found that people around the world seem to share an emotional design in life. That design is shaped like the letter U. Levels of happiness are highest when people are young and when they are old. (23) In the middle, most people's happiness and life satisfaction levels drop.
Professor Oswald says some people suffer from midlife depression more than others. (24) But it happens to men and women, to single and married people, to rich and poor and to those with and without children.
According to the expert's study, the level of happiness in which period of life is the lowest？
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