As a_______ of fact, this can cause all kinds of health problems
                    举一反三
- “To persuade my audience that long-term exposure to electromagnetic fields can cause serious health problems” is a specific purpose statement for a persuasive speech on a question of_____________.
 - Exposure to higher levels of smog can cause health problems , which one is not included? A: appendicitis B: asthma C: heart disease D: lung cancer
 - Stress can cause emotional problems and can lead to ______________ (depress).
 - People of different kinds of clans all begin to form a that the disabled person's cause is the cause of humanitarianism.
 - What kind of problems can modern communication cause?
 
