练习：
1. Which of the following is NOT true of chronic diseases in the US？
A)They account for 70% of all deaths.
B)They are responsible for most of the health care costs.
C)They often result in unhealthy lifestyles.
D)They are largely preventable.
2.The author mentions all the following as ways of disease prevention EXCEPT
A)better diet.
B)increased exercise.
C)reduction on smoking.
D)higher survival rate for cancer.
3.The article indicates that more money spent on disease prevention will mean
A)greater responsibility of the government.
B)much less money needed for disease treatment.
C)higher costs of health care.
D)more 1ifestyle choices for people.
4.The $15 million program is aimed at
A)promoting disease prevention.
B)building more sidewalks.
C)helping needy communities.
D)wiping out chronic diseases.
1. Early cancer screening can help reduce significantly
A)the death rates for all chronic diseases.
B)the kinds of cancer attacking people.
C)the cancer incidence rate.
D)cancer death rate.
答案与题解：
1. C 从文章的第三、六段分别可以看出，在美国，70%的死亡时由慢性病造成的，绝大多数医疗费用也花在慢性病的治疗上，而不健康的生活方式会引发慢性病，而不是慢性病引发不健康的生活方式。慢性病很大程度上是可以预防的。
2. D 从文章的第二、四段可以排除A、B和C三个选项。
3. B 从文章的第三、六、七段可以看出，慢性病的治疗花费极高。适当投资于疾病的预防可以大大减少这种花费。
4. A 从文章第一段可以看出，该项目的主要目的是促进疾病的预防。
5. D 从文章的最后一段可以看出，早期癌症检查有助于大大提高癌症存活率，即大大降低癌症死亡率。