题目内容

The phrase set up in paragraph 6 is closest in meaning to

A. forbid
B. establish
C. increase
D. conceal

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Which sentence below best expresses the essential information in the highlighted sentence

Any species of life can be studied in population ecology.
B. Population ecologists care about the future of humanity.
C. The growth of the human population is a major concern.
D. Population ecology does not consider humans worthy of study.

The word one in paragraph 2 refers to

A. clay tablet
B. scroll
C. book
D. printing press

Why does the author mention immigration and emigration in paragraph 8?

A. To identify factors affecting population dispersion
B. To give examples of territorial behavior. in animals
C. To show that populations balance themselves over time
D. To explain why animal populations are uniformly dispersed

Look at the four squares,A ,B ,C , and D, which indicate where the following sentence could be added to the passage.Where would the sentence best fit?
The power of electronic technologies came from their ability to convey a sense of reality.
A The invention of electronic media changed communication more than any other technological event since the development of writing.B The spread of electronic media occurred with a speed never seen before, thus intensifying commercial and social interaction. There was a tremendous shift in how people received the information that contributed to their understanding of the world.C Voices or pictures could create ideas that appeared authentic—more so than ideas conveyed by the printed word.The graphic,intensely human nature of electronic media enhanced the belief that if it was on the air, it had to be true.D

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