[单项选择]The map shows the ______ of this species across the world.


A. balance
B. distribution
C. combination
D. spread

[单项选择]The ethnographer shows great interest in all of the following EXCEPT ______.


A. current conditions that exist with a culture
B. individual behavior as shaped by a custom
C. behavior patterns common among members of a culture
D. differences existing within a culture

[单项选择]The passage shows us when Americans need advice they often get it from ______.


A. women
B. books
C. letters
D. strangers

[单项选择]Practically all species of animals communicate either through sounds or through a large repertory of soundless codes.
A. Simultaneously
B. Almost
C. Absolutely
D. Basically

[单项选择]According to the selection some species that live where there is no light have ______.
A. long, sensitive feelers
B. luminous fins
C. enormous owl-like eye
D. no actual eyes

[单项选择]Many rare species of plants and animals are threatened with______ with the worsening of environment and mass hunting.


A. extinction
B. migration
C. destruction
D. extraction

[单项选择]The species of black spiders discovered on Mount Everest is ______.
A. the smallest species of spiders
B. the highest altitude dweller among creatures of that size or larger
C. the only creature that lives at that altitude
D. capable of surviving in any environment

[单项选择]Most of the marine species living in the darkest depths have ______.
A. learned to live without light
B. evolved ingenious devices to help them
C. found ways to supply their own light
D. developed extremely sensitive eyes

[单项选择]The enclosures of the 17th and 18th centuries meant that ______.


A. people were no longer legally entitled to own land
B. people were forced to look elsewhere for mean of supporting themselves
C. people were not adequately compensated for the loss of their land
D. people were badly paid for the work they managed to find

[单项选择]

D
Sharks are fish. There are about 350 species of sharks. The smallest sharks are only 12. 5 cm long. The largest, the whale shark, is the world’s largest fish. It grows to about 1Sm long.
Sharks are different from other fish. For example, other fish have skeletons made of hard bones. Sharks have skeletons made of cartilage. In addition, most fish have a special organ called a swim bladder to stop them from sinking but sharks do not. If a shark does not swim constantly, it sinks. Shark babies grow inside eggs. The baby sharks are called pups.
Most sharks eat fish. Some also eat seals and other sharks. Many people are afraid of sharks be cause of their reputation as’ man-eaters’. However, there are fewer than one hundred shark attacks on humans in the world each year.
Humans are the sharks’ worst enemies. Fishermen kill them because of their valuable dorsal fins. Often, they catch a shark, cut off its fin and throw it
A. humans' friends
B. man's enemies
C. the world's largest fish
D. not the same as other fish

[单项选择]

Man finds living together with his own species(物种) difficult enough and living together with other species almost impossible. Our usual solution is to kill off anything that get in our way. Even on those rare occasions when we do enter into a relationship with another species, it is heavily biased(带有倾向)in our favor. The other species benefits only when it suits our own interests. Our attempts to communicate with another species are concerned mainly with giving orders in our own language and having them obeyed. Probably our best attempt has been the whistle language that is used in the shepherd-sheepdog relationship. This is a system that is natural to neither species, but one that both can understand. Its only fault lies in fact that the bias is still there-- the dog cannot whistle for the man.
But now comes news of a piece of research that promises, for the first time, to open up two-way communication between man and another species.
At the University of
A. in the future the chimpanzee can learn language like human beings
B. in the past researchers taught a chimpanzee words of our natural language
C. man and animals can get along well if they can communicate with each other
D. the chimpanzee can communicate well with us human beings