[单项选择]Physicians working in the field of public health are mainly concerned with the environmental causes of ill and how to eliminate them.

[单项选择]Passage Four Public health experts have long been skeptical about the beneficial effect of pets on the health of their owners. After all, dogs bite and pass on parasites, and pigeons and parrots cause lung disease. However, in 1991, researchers at the University of Cambridge in Britain discovered that a short time after acquiring a cat or a dog, some people suffer less from health problems such as headache, backache and flu. It was also announced recently that Australians who keep pets tend to have less cholesterol in their blood than non-pet owners with comparable lifestyles, making them less likely to develop heart disease. For the time being, the findings are little more than puzzling correlations. Why should owning a pet make you less likely to suffer from backache Why should it reduce your cholesterol level Many researchers suspect that answers will be found in the subtle links between mental and physical well-being. If the newly discovered correlations between human hea
A. animals make good pets
B. pets help spread diseases
C. pets have good effects on their owners’ health
D. happy pets rarely suffer from heart disease

[简答题]Topic: Epidemic Diseases and Public Health Crises

[填空题]One of the reasons why public health officials are concerned about avian flu is that it is deadly and can kill previously healthy ______.

[单项选择]There is no risk to public health.（　）
A. point
B. danger
C. chance
D. hope

[填空题]Public health experts say that (the) money one spends (avoiding) illness is (less) than the cost (to be) sick. A. the B. avoiding C. less D. to be

[单项选择]There is no{{U}} risk to{{/U}} public health.
A. point
B. danger
C. chance
D. hope

[填空题]American Health officials believe that public education is the best way to limit______.

[单项选择]Many of us would think those working in a public relations firm is the same with those working in advertising. This notion is understandable since these two industries are closely related to each other. They are both primarily concerned about the promotion of a company’s sales of products or services. The biggest difference may lie in the fact that advertising aims at selling more, while the point of public relations is to make the public think favorably about the company and its offerings.
Aside from the means of advertising, public relation can also use news releases, press conferences, speaking engagements, and community service programs to reach its goal. All this is done so that the public would view the organization in a way that it wants to be perceived.
Another difference is that public relation is more of a two-way communication. It not only communicates to the public, collecting the views from the public is also one important part in the PR’s agenda. By doing so
A. To increase.
B. To decrease.
C. To instruct.
D. To understand.