英文閱讀測驗轉學考題 - 社會議題

A mountain of garbage looks awful. And it is worse than it looks -- and smells. Those tons of decomposing trash are producing methane gas. If allowed to seep out into the environment, methane contributes significantly to global warming. Yet it is not all bad. If captured correctly, methane can generate electricity.
　　The Environmental Protection Agency says about 400 landfills in the United States have methane power plants. One of them is the Frey Farm Landfill, run by a local government authority in Lancaster County, Pennsylvania. The E.P.A. considers it a model landfill for the way it pipes methane to a private plant that generates enough electricity for about 4,000 homes.
　　Gary Platt is the plant's operator. " They bring the garbage in and after the garbage is compacted into the landfill, we draw wells, " he explains. "Wells go down, we put perforated pipe down the center of it, which collects all the methane from the garbage. "
　　The gas plant also produces steam that a local dairy uses to pasteurize its milk and clean its equipment. The dairy's executive vice president, John Cox, points to the old diesel-fueled boilers the dairy used to use. " We estimate that we're going to save 220,000 gallons [ 833,000 liters ] of diesel fuel a year, by purchasing steam from this methodology. "
1. What does this passage mainly talk about?
A. A new way to recycle wastes
B. The importance of disposed garbage
C. The survival history of a gas plant
D. The efforts made by the E.P.A. to protect the environment
2. What is a landfill?
A. A space to store energy
B. A wildlife conservation
C. An open space to dump garbage
D. A factory that generates energy
Update:
3. According to the passage, how can garbage damage the environment?
A. By emitting poisonous gas
B. By destroying the living cells of germs
C. By occupying the human living space
D. By polluting the underground water
Update 2:
4. How can be inferred about Gary Platt's gas plant?
A. They produce milk.
B. They used to use diesel-fueled boilers to produce steam.
C. They sell steam to dairies.
D. They were once the biggest landfill in the neighborhood.
Update 3:
GOOGLE後更看不懂=__=
Update 4:
第四題可以解釋嘛?
Update 5:
小欣：所以妳的答案是?