[单项选择]The unique human habit of taking in and employing animals--even competitors like wolves--spurred on human tool-making and language, which have both driven humanity’s success, Pat Shipman says, paleoanthropologist of Penn State University. "Wherever you go in the world, whatever ecosystem (生态系统), whatever culture, people live with animals," Shipman said.
For early humans, taking in and caring for animals would seem like a poor strategy for survival. "On the face of it, you are wasting your resources. So this is a very weird behavior." Shipman said. But it’s not so weird in the context something else humans were doing about 2.6 million years ago: switching from a mostly vegetarian diet to one rich in meat. This happened because humans invented stone hunting tools that enabled them to compete with other top predators. Quite a rapid and bizarre switch for any animal. So we invented the equipment, learned how to track and kill, and eventually took in animals who also knew how to hunt--
A. Early humans were poor in survival resources.
B. Taking in animal was a very weird behavior.
C. Early humans didn’t know how to track and kill.
D. Early humans switched from a vegetarian diet to meat.

[单项选择]The unique human habit of taking in and employing animals--even competitors like wolves--spurred on human tool-making and language, which have both driven humanity’s success, Pat Shipman says, paleoanthropologist of Penn State University. "Wherever you go in the world, whatever ecosystem (生态系统), whatever culture, people live with animals," Shipman said.
For early humans, taking in and caring for animals would seem like a poor strategy for survival. "On the face of it, you are wasting your resources. So this is a very weird behavior." Shipman said. But it’s not so weird in the context something else humans were doing about 2.6 million years ago: switching from a mostly vegetarian diet to one rich in meat. This happened because humans invented stone hunting tools that enabled them to compete with other top predators. Quite a rapid and bizarre switch for any animal. So we invented the equipment, learned how to track and kill, and eventually took in animals who also knew how to hunt--
A. Animals have driven humanity’s success.
B. Tool-making and language are uniquely human habits.
C. Employing wolves is uniquely human habit.
D. People live with animals everywhere.

[填空题]Asymmetry is a unique feature of the human body.

[单项选择]

Every human has a very unique arrangement of the skin on his finger and this arrangement is unchangeable. Scientists and experts have proved the uniqueness (独特性) of fingerprints and discovered that no exactly similar pattern (式样) is passed on from parents to children, though nobody knows why this is the case.
The ridge (脊状) structure on a person’s lingers does not change with the growth and is not affected by superficial (表面的) injuries. Burns, cuts and other damage to tile outer part of the skin will be replaced in time by the new one which bears a reproduction (再现) of the original pattern. It is when the inner skin is injured that tile arrangement will be destroyed. Stone criminals make use of tilts fact to remove their own fingerprints but this is a dangerous and rare step to take.
Fingerprints call be made very easily with printer’s ink. They can be recorded easily. With special methods, identification can be achieved successfully within a short tim
A. a person’s fingerprints are similar to his father’s
B. a criminal can change his fingerprints by injuring the outer skin
C. a person’s fingerprints are passed on from his parents
D. a criminal can change his fingerprints by damaging the inner skin

[填空题]human

[单项选择]The main problem faced when employing is
A. deciding which person is suitable for the job.
B. hiring people who can’t pass the test.
C. the fact that the managers are too busy to choose the proper people.

[单项选择]

Prolonging Human Life

Prolonging human life has increased the size of the human population. Many people alive today would have died of childhood diseases if they had been born 100 years ago. Because more people live longer, there are more people around at any given time. In fact, it is a decrease in death rates, not an increase in birthrates, that has led to the population explosion.
Prolonging human life has also increased the dependency load. In all societies, people who are disabled or too young or too old to work are dependent on the rest of society to provide for them. In hunting and gathering cultures, old people who could not keep up might be left behind to die. In times of famine, infants might be allowed to die because they could not survive if their parents starved, whereas if the parents survived they could have another child. In most contemporary societies, people feel a moral obligation to keep people alive whether t
A. infants could be left dead in times of starvation
B. it was a moral responsibility to keep old-aged people alive
C. death was considered to be freedom from hardships
D. parents had to impart the cultural wisdom of the tribe to their children

[单项选择]
Prolonging human life has increased the size of the human population. Many people alive today would have died of childhood diseases if they had been born 100 years ago. Because more people live longer, there are more people around at any given time. In fact, it is a decrease in death rates, not an increase in birthrates, that has led to the population explosion.
Prolonging human life has also increased the dependency load. In all societies, people who are disabled or too young or too old to work are dependent on the rest of society to provide for them. In hunting and gathering cultures, old people who could not keep up might be left behind to die. In times of famine, infants might be allowed to die because they could not survive if their parents starved, whereas if the parents survived they could have another child. In most contemporary societies, people feel a moral obligation to keep people alive whether they
A. an increase in birthrates
B. the industrial development
C. a decrease in death rates
D. cultural advances

[单项选择]Human Ingenuity
Since the dawn of human ingenuity, people have devised ever more cunning tools to cope with work that is dangerous, boring, burdensome, or just plain nasty. That compulsion has resulted in robotics—the science of conferring various human capabilities on machines. And if scientists have yet to create the mechanical version of science fiction, they have begun to come Close.
As a result, the modern world is increasingly populated by intelligent gizmos whose presence we barely notice but whose universal existence has removed much human labor. Our factories hum to the rhythm of robot assembly arms. Our banking is done at automated teller terminals that thank us with mechanical politeness for the transaction. Our subway trains are controlled by tireless robo-drivers. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with submillimeter accuracy—f
A. expected to copy human brain in internal structure
B. able to perceive abnormalities immediately
C. far less able than human brain in focusing on relevant information
D. best used in a controlled environment