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Clobal Cancer Rates to Rise 50% by 2020 The number of new cancer cases worldwide is expected to increase by 50% by the year 2020
Clobal Cancer Rates to Rise 50% by 2020 The number of new cancer cases worldwide is expected to increase by 50% by the year 2020
admin
2009-06-15
84
问题
Clobal Cancer Rates to Rise 50% by 2020
The number of new cancer cases worldwide is expected to increase by 50% by the year 2020. But a new report suggests that as many as a third of new cancers could be avoided by adopting healthier lifestyles and through public health action.
The World Cancer Report, released by the International Agency for Research on Cancer (IARC, part of the World Health Organization), shows that cancer has now emerged as a major public health threat in developing countries as well as affluent ones.
Overall, cancer was responsible for 12% of all heaths in 2000. But in many countries more than a quarter of all deaths are caused by cancer.
The report shows that 10 million new cancers were diagnosed globally in 2000, and that number is expected to rise to 15 million by 2020. Researchers say most of that increase will mainly be due to steadily aging populations in both developed and developing countries and current trends in smoking and other unhealthy habits.
"Cancer has emerged as a major public health problem in developing countries for the first time, matching its effect in industrialized countries," says researcher Paul Kleihues, MD, director of IARA, in a news release. "Once considered a ’Western’ disease, the Report highlights that more than 50 percent of the world’s cancer burden, in terms of both numbers of cases and deaths, already occurs in developing countries."
The risk of being diagnosed with cancer in developed countries is double that in less-developed ones. However, the risk of dying from cancer is much higher in developing countries, where 80% of cancer patients already have late-stage incurable tumors at the time of diagnosis.
Researchers say cancer rates have traditionally been higher in developed countries due to greater exposure to tobacco, occupational carcinogens, and an unhealthy Western diet and lifestyle. As less-developed countries become industrialized and more prosperous, they tend to adopt the high-fat diet and low physical activity levels typically seen in the West, which increase cancer rates.
选项
A、50% of new cancers
B、33% of new cancers
C、12% of new cancers
D、80% of new cancers
答案
B
解析
注意利用备选项的特点:都是百分数,这样从文章开头往下找(注意包含百分数的句子),这样发现文章第1段说,一份新的报告显示,通过采用更健康的生活方式和开展公共卫生活动,1/3的新发癌症(约33%)是可以避免的。
转载请注明原文地址:https://kaotiyun.com/show/2NQd777K
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