inquiry into what population levels Australia could reach without risking serious pollution and degradation problems. Many of the opinions to the inquiry suggested a population limit of 17-23 million. The government was expected to respond to the Jones report by July, but did not. CSIRO research scientist Dr.Dong Cocks agreed the government needed to develop a population policy. "With population size(in Australia)doubling every 40 to 50 years, we would need another couple of Melboumes and Sydneys by 2050,"Dr.Cocks said. Notes: ABS 澳大利亚统计局 PNG 巴布亚新几内亚 ALP 澳大利亚工党 CSIRO 联邦科学-- 工业研究组织 31.As population grows, environment experts may be concerned about all the following except______. a.water resources b.food supplying c.housing d.radioactive pollution 32.From the passage we may infer that______.
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