genetic/adj. 基因的, 遗传(性)的
stress/n. 压力, 紧张, 造成紧张的因素
overall/adv. 总的说来, 大体上
environmental/adj. 环境的, 有关环境(保护)的
gene/n. 基因
colleague/n. 同事, 同僚
bacteria/n. 「bacterium的复数」细菌
peptic/adj. 消化性的 .
fraternal/adj. 异卵双生的, 两合子的
susceptibility/n. 敏感性, 过敏性
analgesic/n. 止痛剂, 镇痛药
liability/n. 倾向
练习:
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?
A)Hereditary factors.
B)Economic factors.
C)Environmental factors.
D)Genetic factors.
3. In relation to ulcers, experts study twins in order to examine
A)the roles of genetic factors.
B)the roles of environmental factors.
C)the roles of both genetic and environmental factors.
D)the roles of brotherhood.
4. “Environmental effects” in the fourth paragraph refers to effects brought about by
A)a clean environment.
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.
5. The passage argues that
A)ulcers are related to genes.
B)ulcers are chiefly related to lifestyle.
C)ulcers appear in men and women.