[单项选择]

Passage Four
The atmosphere and oceans are not the only parts of the environment being damaged. Rain forests are being quickly destroyed as well, and their survival is questionable. E. O. Wilson, a biologist at Harvard, calls the depletion(枯竭、耗尽)of rain forest areas "the greatest extinction since the end of the age of dinosaurs(恐龙)".
Unlike some environmental issues, ram forest depletion has fortunately received significant public and media attention. Despite the opposition to the cutting down of rain forests, the problem continues. Every year, Brazil chops down on area of forest the size of the state of Nebraska. In addition to the Amazon’s rain forests, many other forests are being cut down as well. In Indonesia, Zaire, Papua New Guinea, Malaysia, Burme, the Philippines peru, Colombia, Bolivia, and Venezuela, rain forests that were once great have been lost.
According to some estimates, 50 million acres of rain forest are cu
A. The United Nations says about 50 million acres of rain forests are cut down every year.
B. Luckily people and mass media all paid special attention to the depletion of rain forests.
C. The author thought the oceans' survival is questionable.
D. People have stopped cutting down rain forests because of the opposition of most peopl

Passage Four
The atmosphere and oceans are not the only parts of the environment being damaged. Rain forests are being quickly destroyed as well, and their survival is questionable. E. O. Wilson, a biologist at Harvard, calls the depletion(枯竭、耗尽)of rain forest areas "the greatest extinction since the end of the age of dinosaurs(恐龙)".
Unlike some environmental issues, ram forest depletion has fortunately received significant public and media attention. Despite the opposition to the cutting down of rain forests, the problem continues. Every year, Brazil chops down on area of forest the size of the state of Nebraska. In addition to the Amazon’s rain forests, many other forests are being cut down as well. In Indonesia, Zaire, Papua New Guinea, Malaysia, Burme, the Philippines peru, Colombia, Bolivia, and Venezuela, rain forests that were once great have been lost.
According to some estimates, 50 million acres of rain forest are cu
A. clear
B. make rooms for
C. destroy
D. cut down

Passage Four
Sometimes teens need to have some time away from their families. They may want’ to move out of the family home for a while.
Many parents will say no to this demand. But experts say it might be a good idea to let your teens live with a friend or relative.
"It was the break I needed at the time," said Richard Lerner. He is talking about the time he spent living with his grandmother when he was 15.
"It allowed me to be a different person than I was with my parents." Lerner said. He now heads the Institute for Children, Youth and Families at Michigan State University.
Experts say teens living away from their families can test new ways of thinking and getting along with people. They may see new solutions (解答) to problems.
This is different from running away, the experts stress. Runaways are often fleeing serious problems.
Some teens who want some time away from family attend a structu
A. built
B. stuck
C. organized
D. drunk