21. According to the passage, the population argument is focused on_______.

　　A. whether more people are a property or a cost

　　B. whether Mexico should control its population growth or not

　　C. whether the density of population in Mexico is large or small

　　D. what the standard international sustainability limit is

　　22. Which of the following is TRUE according to the first paragraph?

　　A. Mexico has stepped into an aging society.

　　B. It is not necessary for Mexico to control its population.

　　C. Mexico population is younger than that of developed countries.

　　D. It is not necessary for Mexico to develop its infrastructure.

　　23. By "infrastructure"(Para. 2) the author means_______.

　　A. buildings

　　B. the basic framework of a country, such as schools, services, etc.

　　C. social demands

　　D. services and production

　　24. It may be inferred from the 3rd paragraph that_______.

　　A. it isn't necessary for Mexico to control its population growth

　　B. population is likely to grow at a slower pace than in the past

　　C. the more people there are, the greater the wealth people could generate

　　D. Mexico should control its population growth because she belongs to the developing countries

　　25. To check population growth is necessary when_______.

　　A. there are decreasing productivity gains

　　B. there are increasing productivity losses

　　C. we are close to reaching the sustainability limits at a world level

　　D. people become a cost

　　21. B 22. C 23. B 24. A 25. C

　　"Culture shock" occurs as a result of total immersion (浸沒) in a new culture. It happens to "people who have been suddenly transplanted abroad. " Newcomers may be anxious because they do not speak the language, know the customs, or understand people's behavior in daily life. The visitor finds that "yes" may not always mean "yes", that friendliness does not necessarily mean friendship, or that statements that appear to be serious are really intended as jokes. The foreigner may be unsure as to when to shake hands, when to start conversations, or how to approach a stranger. The notion of "culture shock" helps explain feelings of bewilderment and disorientation. Language problems do not account for all the frustrations that people feel. When one is deprived of everything that was once so familiar, such as understanding a transportation system, knowing how to register for university classes, or knowing how to make friends, difficulties in coping with the new society may arise.

　　"... when an individual enters a strange culture, he or she is like fish out of water, " Newcomers feel at times that they do not belong to and feel alienated from the native members of the culture. When this happens visitors may want to reject everything about the new environment and may glorify and exaggerate the positive aspects of their own culture. Conversely visitors may scorn their native country by rejecting its values and instead choosing to identify with (if only temporarily) the value of the new country. This may occur as an attempt to over-identify with the new culture in order to be accepted by the people in it.

　　26. The expression "he or she is like fish out of water" suggests_______.

　　A. people away from their cultures can hardly survive in a new culture

　　B. a fish can not survive without water

　　C. people away from their culture experience mental isolation

　　D. people away from their culture have difficulties in their studies

　　27. In order to identify with the new environment, some people may_______.

　　A. give an exaggerated picture of their own country

　　B. criticize the positive aspects of their own country

　　C. abandon their original beliefs

　　D. accept a temporary set of values

　　28. Which of the following statements is TRUE according to the author?

　　A. Homesickness results in culture shock.

　　B. A typical symptom of culture shock is confusion.

　　C. Culture shock is the explanation of anxiety.

　　D. Culture shock happens to foreign students only.

　　29. Newcomers may worry about

　　A. their ignorance of the alien customs

　　B. their knowledge of "yes" in the native language

　　C. their understanding of friendship

　　D. their control of their behavior

　　30. When the foreign visitor is immersed in new problems he finds hard to cope with, he is most likely to feel_______.

　　A. uninsured B. deprived

　　C. alienated D. disappointed

　　26. C 27. B 28. B 29. A 30. C