I. Read the passage and decide which of the following statements are True (T) or False (F) Air pollution is a serious problem in many cities. Motor vehicles, factories, and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulties in disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up. Citizens, governments, industries, scientists, and business people must work together in different ways to gradually reduce pollution. For example, most cities have introduced recycling programs. 1. Motor vehicles and factories are among the sources of air pollution. ……… 2. Air pollution doesn’t endanger people’s health in some cities. ……… 3. Air pollution is the only problem of the environment mentioned in this passage. ……… 4. Garbage disposal is a problem in many large cities. ……… 5. Everyone must cooperate to reduce pollution. ……… 6. We can reduce pollution by recycling programs only ………