[简答题]Questions 30-39 The response of most animals when suddenly faced with a predator is to flee. Natural selection has acted in a variety of ways in different species to enhance the efficacy of the behaviors, known as “ flight behaviors” or escape behaviors, that are used by prey in fleeing predators. Perhaps the most direct adaptation is enhanced flight speed and agility. Adaptations for speed, however, are likely to require sacrifices in other attributes, so we might expect only some species to adopt a simple fast flight strategy. Another way of enhancing the effectiveness of flight is to move in an erratic and unpredictable way. Many species, like ptarmigans, snipes, and various antelopes and gazelles, flee from predators in a characteristic zigzag fashion. Rapid unexpected changes in flight direction make it difficult for a predator to track prey. In some species, like the European hare, erratic zigzag flight might be more effective in the presence of predators that are faster than t
A. A．moving
B．selected
C．frightened
D．exhausted

[简答题]Questions 30-39 The response of most animals when suddenly faced with a predator is to flee. Natural selection has acted in a variety of ways in different species to enhance the efficacy of the behaviors, known as “ flight behaviors” or escape behaviors, that are used by prey in fleeing predators. Perhaps the most direct adaptation is enhanced flight speed and agility. Adaptations for speed, however, are likely to require sacrifices in other attributes, so we might expect only some species to adopt a simple fast flight strategy. Another way of enhancing the effectiveness of flight is to move in an erratic and unpredictable way. Many species, like ptarmigans, snipes, and various antelopes and gazelles, flee from predators in a characteristic zigzag fashion. Rapid unexpected changes in flight direction make it difficult for a predator to track prey. In some species, like the European hare, erratic zigzag flight might be more effective in the presence of predators that are faster than t
A. A．encourage
B．resist
C．increase
D．reveal

[简答题]Questions 7～10
When the automated player-piano was invented in the mid-19th century, companies that sold sheet music groused. When commercial radio took off, musicians bellyached that it would destroy them. So too, with the introduction of gramophones and tape recorders, did established businesses of the day try to block the inventions to protect their commercial interests.
In each case, public interest defeated the private, and the technologies flourished (often, ironically, to the benefit of the party that originally objected). For instance, movie studios tried to outlaw Sony’s Betamax because it could be used to infringe film copyright. In 1984, America’s Supreme Court ruled the devices legal because they were "capable of substantial non-infringing uses." Today, the home-video market is almost three times larger than Hollywood box-office receipts.
On March 29th, the Supreme Court heard oral arguments regarding peer-to-peer (P2P) file-sharing

[单项选择]

Questions 1-4

When was the Endangered Species Act passed？（）
A. In the f9th century.
B. In 1973.
C. In 1998.
D. In the 21st century.

[单项选择]Questions 53-56 When did sport begin If sport is, in essence, play, the claim might be made that sprot is much older than humankind for, as we all have observed, the beasts play. Dogs and cats wrestle and play ball games. Fished and birds dance. The apes have simple, pleasurable games. Frolicking infants, school children playing tag, and adult arm wrestlers are demonstrating strong, trans-generational and trans-species bonds with the universe of animals past present and future. Young animals, particularly, tumble, chase, run wrestle, mock, imitate, and laugh( or so it seems) to the point of delighted exhaust. Their play, and ours, appears to serve no other purpose than to give pleasure to the players, and apparently to remove us temporarily form the anguish of life in earnest. Some philosophers have claimed that our playfulness is the most noble part of our basic nature. In their generous conception, play harmlessly and experimentally permits us to put our creative forces, fanta
A. Games for Animals
B. The Origins and Meaning of Play
C. A Playful View of Modern Philosophy
D. The Role of Sport in Child Development

[多项选择]Questions 7～10
When the automated player-piano was invented in the mid-19th century, companies that sold sheet music groused. When commercial radio took off, musicians bellyached that it would destroy them. So too, with the introduction of gramophones and tape recorders, did established businesses of the day try to block the inventions to protect their commercial interests.
In each case, public interest defeated the private, and the technologies flourished (often, ironically, to the benefit of the party that originally objected). For instance, movie studios tried to outlaw Sony’s Betamax because it could be used to infringe film copyright. In 1984, America’s Supreme Court ruled the devices legal because they were "capable of substantial non-infringing uses." Today, the home-video market is almost three times larger than Hollywood box-office receipts.
On March 29th, the Supreme Court heard oral arguments regarding peer-to-peer (P2P) file-sharing softwa

[单项选择]

Questions 1-4

When some ads imply that you are one of a kind, what does that mean？（）
A. You are special.
B. You are natural.
C. You are stupid.
D. You are dumb.