A．To introduce African elephant.

　　B．To show the cruelty of poaching.

　　C．To describe his filming experience.

　　D．To ask readers to protect wild animals.

　　答案：D　事实细节题。考查作者的写作目的，结合全文内容可知D项正确。

　　1．suddenly adv. 突然

　　2.poison n．/vt. 毒药；使中毒

　　3．extraordinary adj. 非凡的；非常的

　　4．shocking adj. 令人震惊的

　　5.escape vi./vt. 逃跑，逃脱

　　1．let out 放出；泄露

　　2．in an hour or two 在一两个小时内

　　原文：What actually happened was that he drank deeply and stepped away.(主语从句)

　　译文：实际上发生的事是他深深地饮过水后便走开了。

　　仿写：What_impressed_me_most was that he had never lost heart.

　　令我印象最深的是他从没丧失信心。

　　B

　　[2016·昆明市摸底调研]The expression“a thirst for knowledge” may soon have a new meaning for millions of people who have no way to get clean water. Researchers have developed a book with specially treated pages that can turn dirty water into clean and drinkable water. They say their invention could improve the lives of many in the developing world.

　　About 700 million people around the world are at risk of disease or even death because their drinking water is not clean. The water is polluted by harmful bacteria.

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