2014年理工类阅读理解新增文章-书中第38篇_职称英语阅读理解

　　5. 本句 its telling other ants that its dead 中两个 it 指代前面爬行中的蚂蚁，也就是下段第一句中的 the living dead。

　　6. turned up：发现，找到。

　　7. treated pupae：经过处理的蛹，即被科学家涂抹上化学药剂的蛹。

　　练习：

　　1. What is meant by death chemical mentioned in paragraph 3?

　　A A chemical that contains poison. B A chemical that causes death.

　　C A chemical that announces death. D A chemical that prevents death.

　　2. Which of the following is closest in meaning to the question What keeps ants from hauling away the living dead? ?

　　A How do ants know what is to be hauled away from the dead ants?

　　B What prevents ants from removing the ants that are not yet dead?

　　C What do ants do to keep themselves away from the dying ants?

　　D What prevents ants from being carried away after they die.

　　3. What is NOT true about Choes finding?

　　A When an ant dies, it produces a I am dead signal.

　　B Living ants have the death chemical on their bodies.

　　C Ants have two sets of chemicals on theft bodies.

　　D Ants have the I am not dead chemical on their bodies.

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