[单项选择]According to the passage, the author would agree with which of the following statements concerning the geographic segregation of black Americans
Ⅰ. Black Americans segregation tends to be more intense than among other minorities, such as Hispanics and Asian-Americans.
Ⅱ. The poorest black Americans tend to live dispersed among more affluent blacks.
Ⅲ. Black segregation has taken the form of a vicious circle, perpetuating its own causes.
A. Ⅰ only
B. Ⅱ only
C. Ⅰ and Ⅱ only
D. Ⅰ and Ⅲ only
E. Ⅰ,Ⅱ, and Ⅲ

[单项选择]According to the passage, the author would agree with which of the following statements concerning the geographic segregation of black Americans Ⅰ. Black Americans segregation tends to be more intense than among other minorities, such as Hispanics and Asian-Americans.Ⅱ. The poorest black Americans tend to live dispersed among more affluent blacks.Ⅲ. Black segregation has taken the form of a vicious circle, perpetuating its own causes.
A. (A) Ⅰ only
B. (B) Ⅱ only
C. (C) Ⅰ and Ⅱ only
D. (D) Ⅰ and Ⅲ only
E. (E) Ⅰ, Ⅱ, and Ⅲ

[单项选择]The author would most likely agree with which of the following descriptions of the conflict between Darwinists and cultural anthropologists over the nature of animal emotions
A. The concept of animal emotions suggests that human emotions are based on instinctual biology.
B. Cultural relativists dispute the notion that animal emotions are innate and not be learned.
C. Darwinists view the events of the twentieth-century as a triumph of animal instinct over rational human behavior.
D. Darwinists wish to draw a line between emotional behavior and culturally acquired behavior.
E. Cultural relativists support the idea of an animal behavior dictated by behavioral rules.

[单项选择]According to the passage, why would the landowners respond to environmental concerns
A. They wish to stimulate economic growth.
B. They wish to improve their public image.
C. They have a tradition of cooperating with the government.
D. They are afraid of federal legislation.

[填空题]According to the passage, the author had a predisposition for panic.

[填空题]According to the passage, the Harvard University was named after a young minister John Harvard who, upon his death, left his library and half his estate to the institution two years after its establishment.

[判断题]

According to the passage, inland waterway travel was most popular in the early 1800s.

[单项选择] Regeneration of Limbs Most people would agree that it would be wonderful if humans could regenerate limbs. Those who have lost their arms or legs would be complete again. The day is still far off when this might happen. But in the last 10 years, doctors have reported regeneration in smaller parts of the body, most often fingers. Regeneration is not a newly-discovered process. For centuries, scientists have seen it work in some kinds of animals. Break off a lizards (蜥蜴的) tail, for example, and it will grow a new tail. Scientists now are looking for a way to turn on this exciting ability in more highly-developed animals, including humans. Their experiments show that nerves, cell chemistry and the natural electric currents in the body all seem to have a part in this process. The body of every animal contains general purpose cells that change into whatever kind of cells the body needs. Animals such as the lizard or salamander (蝾螈) use these cells
A. humans can never regenerate limbs
B. human limbs may be regenerated on some animals first
C. humans might be able to regenerate limbs in the future
D. regeneration of human limbs will soon become a reality

[单项选择]Passage Four