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卫生类英语阅读理解（二十一）

发布时间：2006-06-23 18:02 点击：

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Ulcers

　Even though ulcers appear to run in families, lifestyle plays more of a role than genetic factors in causing the illness, according to a report in the April 13th Journal of Internal Medicine. In particular, smoking and stress in men and the regular use of pain-releasing medicines in women were linked with an increased risk of developing an ulcer.

　　Overall, 61% of ulcer risk appears to be due to environmental factors, such as smoking, and the remaining 39% is due to genes according to Dr. Ismo Raiha of the University of Turky and colleagues at the University of Helsinki, Finland. Some researchers had suggested that families may spread Helicobacteria pylori, the bacteria that can cause ulcers. However, the new study suggests this is unlikely, according to the report.

1. According to the passage, which of the following is a very likely cause of ulcer in men?

A) Smoking and stress.

B) Drinking and smoking.

C) Genes and children.

D) Use of a certain medicine.

2. What factors contribute to over half the ulcers?

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