6. When insects feed on decaying plant material in a compost pile, they help turn it into useful garden soil.

　　A. available 　B. organic 　C. distasteful 　D. decomposing

　　7. Researchers have discovered that dolphins are able to mimic human speech.

　　A. import 　B. imitate 　C. impair 　D. humor

　　8. The dichotomy postulated by many between idealism is one of the standard clichés of the ongoing debate over international affatrs.

　　A. division

　　B. combination of two parts

　　C. disparity

　　D. contradiction

　　9. Attempts have been made for nearly three decades to increase the amount of precipitation from clouds by seeding them with salt or silver iodide.

　　A. Devices

　　B. Hypotheses

　　C. Efforts

　　D. Suggestions

　　10. Justices of the peace have jurisdiction over the trials of some civil suits and of criminal cases involving minor offenses.

　　A. supremacy 　B. authority 　C. guidance 　D. obedience

　　11. The feeling of competition among the students in all the classrooms where the test was going on was noticeable to everyone.

　　A. discord 　B. discovery 　C. rivalry 　D. cooperation

　　12. The artist spent years on his monumental painting, which covered the whole roof of the church, the biggest in the country.

　　A. archaic

　　B. sentimental

　　C. outstanding

　　D. entire

　　13. Many of the electric and electronic products we purchase and consume today are what some industrial experts call “homogeneous toys”.

　　A. identical

　　B. homosexual

　　C. unrelated

　　D. distinguishable

　　14. Anthropologist Barbara Myerhoff furthered her reputation as an authority on Native American culture with her study of the symbols, myths, and rituals of the Huichol people.

　　A. deserved 　B. retained 　C. renewed 　D. advanced

　　15. This reflects the priority being attached to economic over political activity, partly caused by a growing reluctance to enter a calling blighted by relentless publicity that all too often ends in destroying careers and reputations.

　　A. powerfulness

　　B. unwillingness

　　C. renaissance

　　D. apologeticness

　　參考答案：1-5 DDACB 6-10 DBACB 11-15 CCADB