2021年最新职称英语学习资料(阅读理解讲义)7

最新职称英语学习资料(阅读理解讲义)7 PASSAGE 51 Ul ___rs

Even though ul ___rs appear to run in families,

lifestyle plays more of a role than geic factors in causing the illness, aording to a report in the April 13th Journal of Internal Medicine. In particular, ___oking and stress in men and the regular use of pain-releasing medicines in women were linked with an increased risk of developing an

ul ___r. Overall, 61% of ul ___r risk appears to be due to enviro ___ental factors, such as ___oking, and the re

___ining 39% is due to genes aording to Dr. I ___o Raiha of the University of Turky and colleagues at the University of Helsinki, Finland. Some researchers had suggested that families ___y spread Helicobacteria pylori, the bacteria that can cause ul ___rs. However, the new study suggests this is unlikely, aording to the report. Raiha and colleagues stu ___d data from more than 13,000 pairs of twins "to examine the roles of geic and enviro ___ental factors in the origin of peptic ul ___r disease," they explain. Both twins were more likely to develop an ul ___r if the pair were geically the same as pared with a pair of

fraternal twins, suggesting that there must be some geic sus ___ptibility to ul ___r development. However, the

risk was no greater in twins living together pared with twins living apart, suggesting that shared exposure to H. pylori was not to blame. "Enviro ___ent effects were not due to factors shared by family members, and they were related to ___oking and stress in men and the use of

___gesics in women," the authors wrote. "The minor effects of shared enviro ___ent to disease liability do not support the con ___pt that the grouping of risk factors, such as H. pylori infection, would explain the geic factor of peptic

ul ___r disease," they concluded.

1. Aording to the passage, which of the following is a very likely cause of ul ___r in men? A) Smoking and stress. B) Drinking and ___oking. C) Genes and children. D) Use of a ___rtain medicine.

2. What factors contribute to over half the ul ___rs? A) Hereditary factors. B) Economic factors. C) Enviro ___ental factors. D) Geic factors.

3. In relation to ul ___rs, experts study twins in order to examine A) the roles of geic factors. B) the roles of enviro ___ental factors. C) the roles of both factors. D) the roles of brotherhood.

4. What does "enviro ___ental effects" in the fifth paragraph refer to? A) A clean enviro ___ent with no ___oke and dust surrounding the living area. B) Smoking and stress in men and use of pain-killing medicine in Women. C) Factors shared by family members such as genes and the food they eat. D) Shared exposure to H. pylori infection in the unclean enviro ___ent.

5. The passage argues that A) ul ___rs are related to genes. B) ul ___rs are related to lifestyle. C) ul ___rs appear in men and women. D) ul ___rs are caused by pylori infection.

KEY:ACCBB

PASSAGE 52