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Which of the following is palatal affricate？
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听力原文：Foreign laborers, especially Asian ones earning low wages, are pictured as working willingly for American capitalists abroad who pay slightly better than average wages; while the former learn otherwise inaccessible technology arid produce sophisticated goods that compete with domestic American goods, even allowing for shipping charges and import duties.
Imports from Asian countries are more competitive than U.S. home-made products because of lower wages in Asia and the exemption of duties for imported goods shipped to the United States.
听力原文：Bioinformatics is the name given to the computer software technologies that are being devised to manage information overload.The field includes everything from storage to classification, analysis and distribution of gene and protein sequence data.Bioinformatics tools have moved genetic research out of the laboratory and transferred it to computer databases for use by anyone with access to the Internet.
Bioinformatics is a new computer software technology that makes research findings on genetic engineering publicly available to the public.
听力原文：As a super hero in her own right, Xena is a female piglet cloned from fetal-pig skin cells. She may prove to be more than the latest addition to the biotech clone farm. Because of similarities between porcine and human organs, the techniques that made Xena may eventually create a supply of genetically modified pig livers that would be acceptable to the human immune system.
The author believes that, given the similarities between pig and human organs, future technology will allow pig livers to be transplanted to humans.
听力原文：Japanese electronics maker Toshiba said Monday that it was buying nuclear plant builder Westinghouse Electric, the US-based unit of the British government's British Nuclear Fuels, for US ＄5.4 billion.
Toshiba Chief Executive Atsutoshi Nishida said that while the price might seem quite high, Toshiba had a lot of competition for the company and that the future growth and profit potential of the business made it the correct price.
By 2020 the market for nuclear power generation is expected to grow 50 percent compared to 2005, Nishida said at a London news conference. "Toshiba is responding to this challenge by acquiring Westinghouse."
Upon completion of the acquisition, Toshiba expects its nuclear power business to expand to three times the current level by 2015 as a result of operational and technological synergies, Toshiba said in a statement.
Toshiba expects to close the deal within six months and is not expecting regulatory troubles, Nishida said.Westinghouse will keep its headquarters in Pennsylvania, as well as its equipment, employees and trademarks, he said.
Toshiba, which makes electronic goods including DVD players, semiconductors, electric motors and power systems, is preparing for an expected surge of new investment in power plants in China, India and the US.
Westinghouse, which has built most of the nuclear reactors in the United States, is likely to design the plant and service them when they come online.
What does the passage mainly discuss？
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