9. What caused the population of the Amazon tribe to reduce greatly?

　　A. The change of their lifestyles.

　　B. Deforestation.

　　C. Diseases.

　　D. Fighting.

　　【解析】选C。细节理解题。从文章第一段最后一句可知, 由外来者带来的疾病导致土著人口剧减。

　　10. Chief Narayamoga fled his homeland because　.

　　A. he owed a large debt

　　B. the loggers wanted to kill him

　　C. he wanted to learn computers

　　D. he failed to fight against logging

　　【解析】选B。细节理解题。从文章倒数第二段可知, 酋长逃离家乡的原因是伐木者悬赏捉拿他并置他于死地。

　　11. What kind of idea did Chief Narayamoga have after he returned to his homeland?

　　A. He could ask the US government for help.

　　B. He could negotiate with the loggers.

　　C. He could save their land with the Internet.

　　D. He could make a map of their land.

　　【解析】选C。推理判断题。联系文章最后两段可知, 酋长从美国回来, 开始用“谷歌”搜索和全球定位技术来引发世人关注, 从而利用社会舆论来保护自己的家园, 由此可知C项正确。

　　12. What can we learn from the last paragraph?

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